4. Given that 4NH3 + 5O2 4NO + 6H2O, if 4.23 x 1022 molecules NH3 were made to react with an excess of oxygen gas, how many molecules of NO would form?

5. If 0.433 moles of sulfur react with 0.500 moles of chlorine, how many moles of disulfur dichloride are produced? Which reactant is the limiting reactant and which is the reactant in excess?
S8(l) + 4Cl2(g)  4S2Cl2(l)


6. How many grams of Fe2O3 are produced when 2.30x10^24 molecules of O2 are reacted?

7. 3.50 g of potassium reacts with water to produce potassium hydroxide and hydrogen gas.  Calculate the mass of potassium hydroxide produced.  The unbalanced equation is:  K + H2O KOH + H2

Please help as much as possible!

Answers

Answer 1

Answer:

Explanation:

Given Rxn =>  4NH₃ + 5O₂ => 4NO + 6H₂O

Given data => 4.23 x 10²² molecules NH₃ => ? molecules NO

Approach: Convert given value in molecules to moles, solve for moles NO by equation ratios in balanced equation. Finish by multiplying moles of NO by Avogadro's Number (= 6.02 x 10²³ molecules/mole) to obtain molecules of NO.

moles NH₃ = 4.23 x 10²² molecules NH₃ / 6.023 x 10²³ molecules/mole

= 0.0703 mole NH₃

From equation stoichiometry of balanced equation 4 moles NH₃ gives 4 moles NO. Then 0.0703 mole NH₃ => 0.0703 mole NO b/c coefficients are equal in balanced equation.

∴molecules of NO = 0.0703 mole NO x 6.03 x 10²³ molecules NO/mole NO

= 4.23 x 10²² molecules of NO.

The remaining problems can be worked much in the same way. Convert given data to moles (if not already expressed in terms of moles), apply equation ratios to calculate needed substance in moles. Finish by converting calculated moles to desired dimension.

Hints for remaining problems:

Divide given moles of reactant substances by respective coefficients, the smaller value is the limiting reactant. Work problem based on moles (not the divide value. That's just for ID of Limiting Reactant). All other reactants will be in excess.

for problem 5 ...

Given       8S(l)        +         4Cl₂(g) => 4S₂Cl₂(l)

Given:  0.433mole       0.500mole

LR        0.433/8             0.500/4

            = 0.054             = 0.125

Limiting Reactant => Sulfur

Work problem from given 0.433 mole sulfur. Cl₂ will be in excess on completion of rxn.

Summary:

- convert data to moles

- divide mole values calculated by respective coefficient => smaller value is limiting reactant.

- use mole ratios to determine results, NOT the divided by value <=> this is only for ID of limiting reactant.

If ya need more, put question in comments. I'll get it. Now, If you do need additional input, before I do I will ask if you followed the hint suggestions, and your calculation results. Good luck :-)


Related Questions

ASAP: The main difference between the gravitational force and electrical force is that

1. Gravitational force can only push
2. Gravitational force can pull and push
3. Electrical force can only pull
4. Electrical force can pull and push

Answers

Answer:

Electrical force can pull and push

Explanation:

describe two sources of energy and explain how they work

please help me (50points)​

Answers

Solar energy:-

In this way the energy generated through sun light with the help of solar panels and to be used in many works.

Wind energy:-

This is generated by moving turbines with windmills .It is used to create electric energy

How to pass chem!!!!!!!!!!

Answers

Answer:

refer to below

Explanation:

- read your textbook! especially the topics that are most confusing

- as you read, make sure to take notes/make an outline. write the words from the text in your own words. In chem, the textbook explanations are usually very detailed, so putting it in your own words will help you remember and understand what you write.

- make sure you really understand the concepts. don't just memorize what you read.

- draw diagrams and structures. seeing how things are structured will help you visualize what you learn

- ask questions to your teacher. if there is anything confusing, make sure to refer to your teacher as they will hopefully be able to explain it so  it won't be confusing

These tips have helped me pass chem with an A. Hope all of this helped!

Answer:

Explanation:

Study material, ask for help, read textbook and do practice problems, get a tutor, beg your teacher for marks,

5. How are the members of Kingdom Archaebacteria different from the
members of Kingdom Plantae?

A. They don't have a nucleus.
B. They don't have cells.
C. They don't need water to live.

6. Where would you probably NOT find a member of the Kingdom
Archaebacteria?

A. In a deep ocean vent.
B. In a very salty lake.
C. On your skin

Answers

Answer:

5. C

6. B

Explanation:

sana nakatulong

Archaebacteria do not have a nucleus and the probability of their presence on skin is very low.

What are Archaebacteria?Ancient bacteria called archaebacteria live in harsh conditions.They are distinguished by the absence of peptidoglycan in their cell walls.Unlike all other creatures, their plasma membrane has branching lipids.What is the classification of archaebacteria?

They are divided into thermoacidophiles, halophiles, and methanogens.

Where can archaebacteria be found?They are found in harsh environments and are known as extremophiles.They can be found in deep ocean vent.They can be found in very salty lakes.What is the presence on human skin?

Archaeal 16 S rRNA genes were found on the skin of every human subject, contributing for up to 4.23 percent of the recovered prokaryotic microbiome.

How are the members of Kingdom Archaebacteria different from the members of Kingdom Plantae?The members of Archaebacteria do not have a nucleus.Therefore option a is correct

Where would you probably not find a member of the kingdom archaebacteria?The probability of the presence of archaebacteria on skin is very low.Therefore, option c is correct.

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If the mass defect for a radionuclide is –8.7839×10-30 kg, what's the binding energy per atom?
Question 7 options:

A)

–7.8944×10-13 J/atom

B)

–4.76×1011 J/atom

C)

–7.8944×10-13 kJ/atom

D)

7.8944×10-13 J/atom

Answers

Answer:

A) –7.8944×10-13 J/atom

Explanation:

Mass defect of a radionuclide (m)

[tex]=-8.7839[/tex]×[tex]10^{-30} kg[/tex]

Formula for binding energy

[tex]E=mc^{2}[/tex]

   [tex]=(-8.7839x10^{-30} kg)(3x10^{8} m/s)^{2}[/tex]

[tex]E=-7.8944x10^{-13} J/atom[/tex]

If the mass defect for a radionuclide is – 8.7839 × 10⁻³° kg, the binding energy per atom will be –7.8944 × 10⁻¹³  J/atom. The correct option is A.

What is radionuclide?

A radionuclide is an unstable nuclide because it contains so much charge. The excess energy is used by the gamma radiation by the nucleus, the electron uses energy to move to another orbital.

Radionuclides are particles that are used to scanning or monitor the radioactive chemicals that are in the body due to swallowing or inhaling.

The binding energy per atom can be calculated by the formula

The mass of defect of a radionuclide (m) is – 8.7839 × 10⁻³° kg

E = mc²

E =  – 8.7839 × 10⁻³° x 3 x 10⁸ m/s

E = –7.8944 × 10⁻¹³  J/atom.

Thus, the correct option is A. –7.8944×10-13 J/atom.

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Explain why people tend to wear light- colored clothing during the warmer months of the year. Use evidence and scientific reasoning to support your answer

Answers

Answer:

because dark colours like black attract light (sun) and heat. light colors reflect more light, (it absorbs less energy and heat from the sun)

Answer:

Because Black color absorbs light better than light-colored.

for example have you ever seen the black car on the road if you touch it very hotter than white car

1. White is the most reflective color. Does not absorb heat like black Make the house not hot.

2. White has the least radiation exposure. Therefore, during the winter night, it will help retain heat for a while. 3. Because white absorbs light as little as possible. Causing the pigment to deteriorate slowly Unlike black that absorbs light well. Causing the color to deteriorate and fade quickly until noticeable

4. If the house next to you is painted white during the day, it will help reflect light into the house.

Why that black color absorbs heat? Even though it abosrbs the light? It comes from the principle that (Substance or material) Black is what absorbs (absorbs) light in every technology.

It absorbs all widths of light, including infrared light. (The infrared itself is hot.)

Black repels self-heating the most because of all colors of light. But there is justice.

A body of mass 0.5kg is thrown vertically upwards
from the ground with an Initial velocity of 80.m/s
Calculate
" the potential energy at B 80.0cm above the ground​

Answers

Here's the solution,

we know,

potential energy = mgh

where,

m = mass = 0.5 kgg = acc due to gravity = 9.8 m/s²h = height = 0.8 m (80 cm)

So,

=》

[tex]p.e = 0.5 \times 9.8 \times 0.8[/tex]

=》

[tex]p.e = 3.92 \: \: joules[/tex]

Rubbing alcohol and vegetable oil soluble on insoluble?

Answers

Vegetable oil - Insoluble.
Rubbing alcohol- soluble.

Write the balanced equation for the equilibrium reaction for the dissociation ofsilver chloride in water, and write the K expression for this reaction. Then create an ICE chart. Since we know the equilibrium concentration of the silver ion, we can solve for Ksp.Does it agree with the literature value

Answers

Answer:

See explanation

Explanation:

Hello there!

In this case, since the the concentrations are not given, and not even the Ksp, we can solve this problem by setting up the chemical equation, the equilibrium constant expression and the ICE table only:

[tex]AgCl(s)\rightleftharpoons Ag^+(aq)+Cl^-(aq)[/tex]

Next, the equilibrium expression according to the produced aqueous species as the solid silver chloride is not involved in there:

[tex]Ksp=[Ag^+][Cl^-][/tex]

And therefore, the ICE table, in which x stands for the molar solubility of the silver chloride:

       [tex]\ \ \ \ \ \ \ \ \ \ \ \ \ \ AgCl(s)\rightleftharpoons Ag^+(aq)+Cl^-(aq)[/tex]

I          -                   0             0

C        -                   +x           +x

E        -                    x             x

Which leads to the following modified equilibrium expression:

[tex]Ksp=x^2[/tex]

Unfortunately, values were not given, and they cannot be arbitrarily assigned or assumed.

Regards!

PLEASE HELP WILL MARK BRAINLEST!!!!

Answers

Answer: c????????

Explanation:

How many liters of SO2 will be produced from 26.9L O2?

Answers

Answer:

26.9L of SO2

Explanation:

The reaction between Sulphur and oxygen is as follows:

[tex]S_2 + 2O_2 \to 2SO_2[/tex]

This implies that:

2 moles of oxygen reacts with 1 mole of sulphur to produce 2 moles of SO₂

2 moles of oxygen also yields 2 moles of SO₂

The number of moles of oxygen given is determined as:

[tex]= 26.9 \ L \ of \ O _2 \times (\dfrac{1 \ mol \ of O_2 }{22.4 \ L}) \\\\ = 1.20 \ mol \ of \ O_2[/tex]

The number of moles of SO₂ by using the ratio is:

[tex]= 1.20 \ mol \ of \ O_2 \times (\dfrac{1 \ mol \ of \ SO_2 }{1 \ mol \ O_2}) \\ \\ = 1.20 \ mol \ of SO_2[/tex]

Finally, the volume by applying the new moles is computed as:

[tex]= 1.20 \ moles \ of \ O_2 \times ( \dfrac{1 \ mo \ of \ SO_2}{1 \ mol \ of O_2}) \times ( \dfrac{22.4 }{1 \ mol }) \\ \\ = 26.9 \ L \ of \ SO_2[/tex]

Rank the following solutions from lowest to highest vapor pressure.
Rank from lowest to highest. To rank items as equivalent, overlap them.
10.0 g of potassium acetate KC2H3O2 in 100.0 mL of water
20.0 g of sucrose (C12H22O11) in 100.0 mL of water
20.0 g of glucose (C6H12O6) in 100.0 mL of water

Answers

Solution :

When non volatile solute is added to solvent, vapor pressure gets lowered.

Relative lowering in vapor pressure is given :

[tex]$\frac{P^0-P}{P^0}$[/tex]   = [tex]$\text{mole fraction}$[/tex] of solute

[tex]$\frac{P^0-P}{P^0}=x_B$[/tex]

[tex]$P^0$[/tex] = vapor pressure of pure solvent

P = vapor pressure of solution

[tex]$x_B$[/tex] = mole fraction of solute

[tex]$x_B=\frac{n_B}{n_A+n_B}$[/tex]

[tex]$n_B $[/tex] = [tex]$\text{number of moles of solute}$[/tex]

[tex]$n_A$[/tex] = [tex]$\text{number of moles of solvent}$[/tex]

Number of moles [tex]$=\frac{\text{weight}}{\text{molecular weight}}$[/tex]

[tex]$\frac{P^0-P}{P^0}=\frac{w_B/M_B}{w_A/M_A+w_B/M_B}$[/tex]

            [tex]$\approx \frac{w_B/M_B}{w_A/M_A}$[/tex]

1. For 10 g of [tex]$CH_3COOK$[/tex]

         [tex]$CH_3COOK \rightarrow CH_3COO^- + K^+$[/tex]

  Ions = 2

It will affect colligative property.

[tex]$\frac{P^0-P}{P^0} = \frac{i \times 10/98}{w_A/M_A}$[/tex]

Relative lowering in vapor pressure will be :

[tex]$=\frac{2 \times 10/98}{w_A/M_A}$[/tex]

[tex]$=\frac{0.20}{w_A/M_A}$[/tex]

2. For 20 g sucrose

Sucrose is non electrolyte, i = 1

[tex]$\frac{P^0-P}{P^0} = \frac{ 20/342}{w_A/M_A}$[/tex]

            [tex]$=\frac{0.050}{w_A/M_A}$[/tex]

3. For 20 g of glucose.

   Glucose is a non electrolyte, i = 1

   [tex]$\frac{P^0-P}{P^0} = \frac{20/180}{w_A/M_A}$[/tex]

               [tex]$=\frac{0.11}{w_A/M_A}$[/tex]

[tex]$w_A/M_A$[/tex] is same in all three solutions.

Hence, lowering in vapor pressure is maximum in [tex]$CH_3COOK$[/tex] and minimum is Sucrose.

Vapor pressure from lowest to highest.

10 g of [tex]$CH_3COOK$[/tex] < 20 g of glucose < 20 g of sucrose

               

The pressure exerted by vapor to the other gas is called vapor pressure.

The formula used to solve the question is as follows:-

[tex]\frac{P^o -P}{P^o}[/tex]

The water vapor depends on the following:-

Water pressureTemperature.

After solving the equation, the correct sequence is as follows:-

[tex]CH_3COOK > GLUCOSE > SUCROSE[/tex]

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What is the volume, in liters, of 0.350 mol of nitrogen gas at 32°C and
0.980 atm of pressure? *
A. 9.85 L
B. 8.94 L
C. 104.6 L
D. 0.94 L

Answers

Answer: The volume is 8.94 L.

Explanation:

Given: no. of moles = 0.350 mol,   Pressure = 0.980 atm

Temperature = [tex]32^{o}C = (32 + 273) K = 305 K[/tex]

Formula used to calculate the volume is as follows.

PV = nRT

where,

P = pressure

V = volume

n = number of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

[tex]PV = nRT\\0.980 atm \times V = 0.350 mol \times 0.0821 L atm/mol K \times 305 K\\V = 8.94 L[/tex]

Thus, we can conclude that the volume is 8.94 L.

Air trapped in a cylinder fitted with a piston occupies 142.8 mL at 0.97 kPa pressure.
What is the new volume of air when the pressure is increased to 1.5 kPa by applying force
to the piston?

Answers

Answer:

92.344mL

Explanation:

acording to boyle's law that PV=constant then P1V1=P2V2

Write the overall balanced equation for the reaction:

N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)

Answers

Answer:

This reaction has infinite ways to be balanced

Explanation:

To balance this equation we can use the algebraic method:

N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)

Where we write each molecule as a letter:

A + B → C + D + E

Then, we write the equations according the number of atoms of each molecule. That is:

Oxygen → 4A + B = C + 2D + 2E (1)

Nitrogen → 2A = C + E (2)

Carbon → B = D (3)

Then, we have to give 1 arbitral number for a letter. For example:

B = 1; D = 1

(1) 4A + 1 = C + 2 + 2E

4A = C + 2E + 1

2A = C + E (2) Twice (2):

4A = 2C + 2E

Subtracting (1) in (2)

C + 2E + 1 = 2C + 2E

C + 1 = 2C

1 = C

Si 1 = C:

4A + 1 = 1 + 2 + 2E

4A = 2 + 2E (1)

y:

2A = 1 + E (2)

Twice:

4A = 2 + 2E

As (1) and (2) are the same equation:

This reaction has infinite ways to be balanced

For example:

N2O4(g) + CO → NO(g) + CO2(g)+NO2(g)

Which of the following statements about energy is FALSE?
A. Energy can be converted from one type to another.
B. The total energy of a system remains constant.
C. Energy is the capacity to do work.
D. Kinetic energy is the energy associated with its position or composition
E. Systems tend to change in order to lower their potential energy

Answers

Answer (D)
Kinetic energy is the energy associated with its position or composition

According  to law of conservation of energy, the statement which is false is kinetic energy is the energy associated with its position or composition.

According to law of conservation of energy, it is evident that energy is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

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But Are Punnett square percentages always correct?

Answers

Answer:

yes

Explanation:

cuz is a square and if all angles are equal of a square then it is correct

Which of these statements does not describe electricity?
A. Lightning is electricity that has built up in the air and travels to the Earth.
B. Electricity cools down devices as it travels through them.
C. Electricity will naturally follow the path of least resistance.
D. Electricity is negatively charged and is attracted to positive charges.

Answers

Answer:

answer is B. Electricity cools down devices as it travels through them

Explanation

Consider pure water separated from an aqueous sugar solution by a semipermeable membrane, which allows water to pass freely but not sugar. After some time has passed, the concentration of sugar solution: a. will have decreased b. will be the same on both sides of the membrane c. might have increased or decreased depending on other factors d. will not have changed e. will have increased

Answers

Answer:

it will be the same on both sides of the membrane

When the pure water is separated from the aqueous sugar solution when the sugar cannot pass through the semipermeable membrane. So the water moves through the membrane to the sugar solution. Therefore, the concentration of sugar solution will be decreased.

What is osmosis?

Osmosis can be described as the spontaneous net movement or diffusion of solvent molecules through a permeable membrane from a region of lower solute concentration to a higher solute concentration in a direction that tends to balance the solute concentrations on both sides.

A physical process in which any solvent moves across a selectively permeable membrane separating two solutions of different concentrations.

Osmotic pressure can be described as the external pressure needed to be applied so that there is no net movement of a solvent across the membrane. Osmotic pressure can be defined as a colligative property because it depends on the molar concentration of the solute but not on its identity.

Therefore, option (A) is correct.

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2. The number of molecules in 1.0 mole of So2 is the same as the number of molecules in:
(1) 1.0 mole of N2

(2) 2.0 moles of Ne


(3) 0.25 mole of NO2

(4) 0.50 mole of NH3

Please show work and explain!

Answers

Answer:

1.0 moles of N2

Explanation:

since

1.0 × avogadro's no# = same answer for SO2 and N2

avogadro's no#= 6.02× 10²³

The number of molecules in 1.0 mole of SO₂ is the same as the number of molecules in (3) 0.25 mole of NO₂.

Option (3) is correct.

Avogadro's number, approximately 6.022 x 10²³, represents the number of molecules or atoms in one mole of any substance. In this case, 1.0 mole of SO₂ contains the same number of molecules as any other substance with 1.0 mole, such as 1.0 mole of N₂ or 2.0 moles of Ne.

However, when comparing different moles of substances, we can use the concept of stoichiometry and molar ratios to determine the number of molecules. Given that 1 mole of SO₂ is equivalent to 1 mole of NO₂, 0.25 mole of NO₂ would also contain the same number of molecules as 1 mole of SO₂. Therefore, the number of molecules in 1.0 mole of SO₂ is the same as the number of molecules in 0.25 mole of NO₂.

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Two dogs, one with spots and one with no spots have the same mass and
are running with different velocities. Dog 1 (Dog with no spots) has a
velocity of 1 m/s while Dog 2 (Dog with spots) has a velocity of 2 m/s.
Which dog has a larger kinetic energy and how much larger is its kinetic
energy compared to the other dog

Answers

Answer:

dog 2 because it is running 1m faster a second than dog 1. Dog 2 can run 1 meter farther in a second than the other dog.

un MODELO ATÓMICO es:
a. Una esfera con partículas positivas y negativas
b. La estructura mínima de la materia.
c. Una serie de descubrimientos.
d. La representación de un átomo donde se explica su comportamiento y características.

Answers

Answer:

Creo que es D pero no tan segura

Explanation:

18. Reza has a glass ball filled with water that contains tiny plants and shrimp that eat those plants.
No material can get in or out, but light can get through the glass when it is placed in sunlight
The number of energy storage molecules in the plants and shrimp started out high, but then the
glass ball was moved, and the number of energy storage molecules decreased. Was the glass ball
moved into the light or into the dark? What happened to the amount of carbon in the water?

Answers

Answer:

The glass ball was moved into the dark, and there is more carbon in the water.

Explanation:

Reza has a glass ball filled with water that contains tiny plants and shrimp that eat those plants. No material can get in or out, but light can get through the glass when it is placed in sunlight.

The number of energy storage molecules in the plants and shrimp started out high, but then the glass ball was moved, and the number of energy storage molecules decreased. Was the glass ball moved into the light or into the dark? What happened to the amount of carbon in the water?

The glass ball was moved into the dark and the amount of carbon increased in water as there is no photosynthesis taking place.

What is photosynthesis?

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

The process begins with proteins absorbing light energy  which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.

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The pressure on 200 milliliters of a gas at constant
temperature is changed from 380 torr to 760 torr. The new
volume of the gas is

Answers

answerA) 100 mL

Explanation:

At constant temperature and number of moles, Using Boyle's law  

Given ,  

V₁ = 200 mL

V₂ = ?

P₁ = 60 kPa

P₂ = 120 kPa

The new volume of the gas is 100mL

Boyle's law is use to calculate the volume of a gas in relation with its pressure. The Boyle's law equation is as follows:

P1V1 = P2V2

Where;

P1 = initial pressure of the gas (torr)

P2 = final pressure of the gas (torr)

V1 = initial volume of the gas (mL)

V2 = final volume of the gas (mL)

According to the information of this question, the pressure on 200mL of a gas changed from 380 torr to 760 torr. Hence;

V1 = 200mL

V2 = ?

P1 = 380torr

P2 = 760torr

Using P1V1 = P2V2

V2 = P1V1/P2

V2 = (380 × 200) ÷ 760

V2 = 76000 ÷ 760

V2 = 100mL

Hence, the new volume of the gas is 100mL

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Which type of metal ions tends to absorb light in the visible range?

Answers

mmmm i think copper!!

Transition metal ions tends to absorb light in the visible range.

What are Transition Metals?

Transition metal is defined as an element having a d subshell that is partially filled with electrons, or an element that has the ability to form stable cations with an incompletely filled d orbital.

The transition metals are located towards the middle of the periodic table between the highly reactive metals and the noble gases.

They are the only elements that may use electrons in the next to highest—as well as the highest—energy level as valence electrons.

Transition metals are unusual in having very similar properties even with different numbers of valence electrons.

Therefore, Transition metal ions tends to absorb light in the visible range.

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When 16.35 moles of SI reacts with 11.26 moles of N2, how many moles of SI3N4 are formed

Answers

Answer:

5.450 mol Si₃N₄

Explanation:

Step 1: Write the balanced equation

3 Si + 2 N₂ ⇒ Si₃N₄

Step 2: Establish the theoretical molar ratio between the reactants

The theoretical molar ratio of Si to N₂ is 3:2 = 1.5:1.

Step 3: Establish the experimental molar ratio between the reactants

The experimental molar ratio of Si to N₂ is 16.35:11.26 = 1.45:1. Comparing both molar ratios, we can see that Si is the limiting reactant.

Step 4: Calculate the moles of Si₃N₄ produced from 16.35 moles of Si

The molar ratio of Si to Si₃N₄ is 3:1.

16.35 mol Si × 1 mol Si₃N₄/3 mol Si = 5.450 mol Si₃N₄

where do you think water vapor in air comes from?

Answers

Heat from the Sun causes water to evaporate from the surface of lakes and oceans. This turns the liquid water into water vapor in the atmosphere. Plants, too, help water get into the atmosphere through a process called transpiration

Your friend says that the animal in this picture is a predator. What are 2 questions you can ask your friend to help prove that this animal is a predator.


please help please please please please please please please please please please please please please please please please please please please.

NO LINKS PLEASE PLEASE .​

Answers

Answer: Does the animal prey on other animals? Is the animal a carnivore?

How does publishing in scientific journals help ensure that science leads to
reliable results?
A. It allows results to be reviewed and reproduced by other
scientists.
B. It allows the public to decide if science is worthwhile.
C. It shows which experiments are the most popular with scientists.
D. It gives scientists a reason to do more experiments.

Answers

Answer:

A. it allows results to be reviewed and reproduced by other scientists.

Unlike gases, the behavior of liquids and solids cannot be described by a set of laws that can be applied regardless of the identity of the substance

a. True
b. False

Answers

Answer:

a. True

Explanation:

The gases that we study are governed by different laws of physics. Gases behaves according to some given set of laws like the Universal gas laws, Boyles law, Charles law, Gay Lussac's law and many more.

But we do not see a definite pattern or rule when we study solids or liquids. The behavior of the solids and liquids are not described by the set of laws which are applied regardless of the identity of the substance.

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