Help me with this please

Help Me With This Please

Answers

Answer 1

Answer:

–253.5 °C

Explanation:

We'll begin by calculating the number of mole in 6 g of CO₂. This can be obtained as follow:

Molar mass of CO₂ = 12 + (2×16)

= 12 + 32

= 44 g/mol

Mass of CO₂ = 6 g

Mole of CO₂ =.?

Mole = mass / molar mass

Mole of CO₂ = 6 / 44

Mole of CO₂ = 0.136 mole

Next, we shall convert 225 mL to L.

1000 mL = 1 L

Therefore,

225 mL = 225 mL × 1 L / 1000

225 mL = 0.225 L

Next, we shall determine the temperature of the gas. This can be obtained as follow:

Pressure (P) = 0.855 atm

Volume (V) = 0.225 L

Number of mole (n) = 0.136 mole

Gas constant (R) = 0.0821 atm.L/Kmol

Temperature (T) =?

PV =nRT

0.855 × 0.255 = 0.136 × 0.0821 × T

0.218025 = 0.0111656 × T

Divide both side by 0.0111656

T = 0.218025 / 0.0111656

T = 19.5 K

Finally, we shall convert 19.5 K to degree celsius (°C). This can be obtained as follow:

T(°C) = T(K) – 273

T(K) = 19.5 K

T(°C) = 19.5 – 273

T(°C) = –253.5 °C

Therefore, the temperature of the gas is –253.5 °C


Related Questions

why would a farmer add calcium hydroxide to his soil​

Answers

Increase the growth

The Centers for Disease Control and Prevention (CDC) recommends that public health actions be initiated when the level of lead in a child’s blood is 5 micrograms per deciliter (µg/dL) or more. What is this in ppm? ( 1 dL = 0.1 dm^3)

a) 5 ppm
b) 0.5 ppm
c) 50 ppm
d) 0.05 ppm

Answers

c is the best for this

The reaction a(g)⇌b(g) has an equilibrium constant of 5.8 and under certain conditions has q = 336. part a what can you conclude about the sign of δg∘rxn and δgrxn for this reaction under these conditions?

Answers

Answer:

The answer is "As [tex]Q=336[/tex], at high-temperature [tex]\Delta G_{rxn}>0[/tex] and When[tex]K>1,[/tex][tex]\Delta G^{\circ}_{rxn}>0[/tex]."

Explanation:

The equation for the reaction is:

[tex]A(g) \leftrightharpoons B(g)[/tex]  

[tex]K=5.8\\\\Q=336[/tex]

At equilibrium,

[tex]\Delta G^{\circ}_{rxn}>0[/tex][tex]=-RT \ln \ K[/tex]

When k=5.8(>1), the value of [tex]\ln k[/tex] would be positive

So, [tex]\Delta G^{\circ}_{rxn}[/tex] is negative (< 0)

So if K > l, [tex]\Delta G^{\circ}_{rxn}<0[/tex]

If the reaction is not in equilibrium so the equation is :

[tex]\Delta G_{rxn}>0[/tex]=[tex]\Delta G^{\circ}_{rxn}[/tex][tex]+RT \ln Q[/tex]

Substituting the expression:

[tex]\Delta G_{rxn}>0[/tex][tex]= (-RT \ln K) + RT \ln Q[/tex]

                 [tex]= RT(\ln Q- \ln K)\\= RT(\ln (336)-\ln (5.8))\\= RT(4.06)[/tex]

It is the positive value for all temperatures.

So, As Q = 336, at the high temperature [tex]\Delta G_{rxn}>0[/tex].

according to the periodic table, which two elements have an atomic mass less than twice their atomic number?

Answers

Answer:

Hydrogen and Oxygen

Explanation:

Hydrogen atomic mass = 1.008  amu

atomic mass = 15.999  amu

According to the periodic table, two elements whose  atomic mass is less than twice their atomic number are hydrogen and oxygen.

The atomic number of an atom refers to the number of protons in that atom. It serves as an identity for atoms of elements. The atomic mass of element is the weighted average of the masses of all the isotopes of the element.

The atomic number of oxygen is 8 while the atomic number of hydrogen is 1. The atomic mass of oxygen is 15.999 amu while the atomic mass of hydrogen is 1.0008 amu.

We can see that twice the atomic number of oxygen gives sixteen while twice the atomic number of hydrogen gives two. Therefore,  two elements whose  atomic mass is less than twice their atomic number are hydrogen and oxygen.

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Convert 15.75 grams of Magnesium to atoms.

Answers

Answer: [tex]3.903\times 10^{23}[/tex]

Explanation:

Given

Mass of magnesium is [tex]m=15.75\ gm[/tex]

The molar mass of magnesium [tex]M=24.3\ g/mol[/tex]

No of moles in 15.75 g of magnesium is

[tex]\Rightarrow n=\dfrac{15.75}{24.3}\\\\\Rightarrow n=0.648\ \text{moles}[/tex]

1 mole contains [tex]6.022\times 10^{23}[/tex] atoms

So, 0.648 moles contain [tex]0.648\times 6.022\times 10^{23}[/tex]

[tex]=3.903\times 10^{23}\ \text{atoms}[/tex]

What is the function of the system shown in the diagram?
O A. removal of wastes
OB. absorption of nutrients into the bloodstream
O C. carrying oxygenated blood and nutrients to cells
O D. transmitting and receiving messages

Answers

Answer:

the answer is carrying oxygenated blood and nutrients to cells

25) In a certain area where there are many farms, the groundwater levels have dropped by as much as 10 m over a period of 30 years. The main cause behind this is MOST LIKELY

A) the evaporation of water from aquifers.

B) the excessive pumping of water through wells.

C) the leakage of fertilizers from the farms into the aquifer.

D) the construction of a dam to divert water into a reservoir.
NO LINKS!!!
I will give Brainliest to 1st right answer!

Answers

Answer:

I a, answering so the other dude can get brainily oh and yeah its b

Explanation:

The excessive pumping of water through well is the major reason for the drop of ground water level. The nearby farms over use water and pumps from undergrounds.

What is underground water?

Water beneath the earth surface is called ground water. The storage of ground water is a very important in all areas to sustain our need for water and it must be maintained pure without the presence of overdose of heavy metals and other impurities.

Reduction in the level of ground water storage is a serious issue that might leads to a scenario where the drinking water is not sufficient. The uncontrolled use of pump water by factories,  industries and farms results in the drop of ground water level.

The nearby farms might pumping water from sources uncontrollably in the area. That is the main reason of dropping in ground water level. Hence, option B is correct.

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1
According to the text, what is reduction?

Answers

you forgot to attach the text

BTW reduction is the action or fact of making a specified thing smaller or less in amount, degree, or size.

What is the molarity of 5.60 mol of sodium carbonate in 1500 ml of solution?

Answers

Answer:

3.74 M

Explanation:

We know that molarity is moles divided by liters. The first thing to do here is convert your 1500 mL of solution to L. There's 1,000 mL in 1 L, so you need to divide 1500 by 1000:

1500 ÷ 1000 = 1.50

Now you can plug your values into the equation for molarity:

5.60 mol ÷ 1.50 L = 3.74 M

Why did the discovery of electrons mean that an atom must contain some positive charge?

WARNING!!!!!!!!!: NO LINKS OR I WILL REPORT YOU!!!!!

Answers

Answer

electrons are very small, so every atom would have to contain a whole lot of electrons.Atoms must also contain some type of positively charged material which balances the negative charge on the electrons.

Explanation:

J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.

hope this helped

14. As the moles of salt added are increased, what
happens to the melting point of the water?

Answers

Salt lowers the freezing/melting point of water, so in both cases the idea is to take advantage of the lower melting point. Ice forms when the temperature of water reaches 32 degrees Fahrenheit (0 degrees Celsius).

Salt increases the boiling point and decreases the melting point of water. That means if you add salt before heating some water on the stove, it will take longer to boil. Also, if you add salt to ice, it will melt faster.

What is the melting point?

Melting point is the temperature at which a given solid material changes from a solid state to a liquid, or melts.

Salt makes water boil at a higher temperature - water sticks to the salt ions, so they can't get out of the liquid as easily.

Salt makes water freeze at a lower temperature - it's probably harder for the water molecules to get organized into a solid-state with all the salt ions messing up its structure.

Hence, as the moles of salt are added melting point of the water increases.

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Please someone help ! I need it ASAP

Answers

Answer:

6.B

7.B

Explanation:

Mark me as brainliest

6b
7b
Are the correct answers

What happens when light passes through a solution? perform an activity with a homogenous to expalin what happen when light pass through it.








Answer fast and pls read the question ;-; and will give u brainliest

Answers

Answer:

light bends and makes effects in the water

Explanation:

If 164.8 g of iodine monobromide is combined with 62.4 g of ammonia, determine the amount of excess reactant that remains after the reaction is completed and the percentage yield of nitrogen triiodide if 96.4 is produced?

Answers

Answer:

[tex]m_{NH_3}^{leftover}=57.88g[/tex]

[tex]Y= 92.0\%[/tex]

Explanation:

Hello there!

In this case, according to the following chemical reaction between iodine monobromide and ammonia:

[tex]3IBr+NH_3\rightarrow NI_3+3HBr[/tex]

It turns out firstly necessary to identify the limiting reactant, by considering the proper molar masses and the 3:1 and 1:1 mole ratios of iodine monobromide to nitrogen triiodide and ammonia to nitrogen triiodide respectively:

[tex]n_{NI_3}^{by\ IBr}=164.8gIBr*\frac{1molIBr}{206.81gIBr}*\frac{1molNI_3}{3molIBr} =0.266molNI_3\\\\n_{NI_3}^{by\ NH_3}=62.4gNH_3*\frac{1molNH_3}{17.03gNH_3}*\frac{1molNI_3}{1molNH_3} =3.66molNI_3[/tex]

Thus, we conclude that the limiting reactant is IBr as is yields the fewest moles of nitrogen triiodide product. Next, we can calculate the reacted grams of ammonia as the excess reactant:

[tex]m_{NH_3}^{reacted}=0.266molNI_3*\frac{1molNH_3}{1molNI_3}*\frac{17.03gNH_3}{1molNH_3}=4.52gNH_3[/tex]

And therefore the leftover of ammonia is:

[tex]m_{NH_3}^{leftover}=62.4g-4.52g=57.88g[/tex]

Next, the percent yield is calculated by firstly calculating the theoretical yield of nitrogen triiodide as follows:

[tex]m_{NI_3}^{theoretical}=0.266molNI_3*\frac{394.72gNI_3}{1molNI_3} =104.8gNI_3[/tex]

And finally the percent yield by dividing the given actual yield of 96.4 g by the previously computed theoretical yield:

[tex]Y=\frac{96.4g}{104.8g}*100\%\\\\Y= 92.0\%[/tex]

Best regards!

in which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

Answers

Answer:

G - H2SO4

Explanation:

two hydrogen atoms and 4 oxygen atoms

do earths plates meet at boundaries

Answers

Answer:

Earth's plates meet at BOUNDARIES. Breaks in the crust called FAULTS form where plates meet. ... Most TRANSFORM BOUNDARIES where plates move apart occur along the mid-ocean ridges.

Explanation:

i hope this helped you ;)

The area of a circle is 38.5 cm². Calculate.
(a) the radius​

Answers

The Answer is 3.501591994

Explanation:

area of circle = πr^2

radius=

39.5 = 22/7*r^2

r^2 = 7*39.5/22

= 12.56

r=3.5

R is the ideal gas constant. We know it is equal to 0.0821. What is the unit for R?
L•atm/mol K
L•atm/mol · °C
mL • atm/mol. K
L• kPa/mol - K

Answers

Answer:

A. L•atm/mol K

Explanation:

The ideal gas law equation is given as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant

T = temperature (K)

As rightly stated in this question, R is the ideal gas constant, which can be different depending on the unit of the other components.

At STP;

V = 22.4L

P = 1 atm

T = 273 K

n = 1 mole

Hence, using PV = nRT

R = PV/nT

R = 1 × 22.4/1 × 273

R = 22.4/273

R = 0.08205

Approximately, R = 0.0821

With the units of P as atm, V as L, n as mol and T as K; R will be 0.0821 L•atm/mol K

The wording of these questions are confusing how would you set this up ?

The formula is m1v1=m2v2

Answers

Answer:

8. 171074.8 mL

9. 3475 mL.

Explanation:

8. Determination of the volume of the diluted solution.

Initial Molarity (M₁) = 14 M

Initial volume (V₁) = 523 mL

Final Molarity (M₂) = 0.0428 M

Final volume (V₂) =?

Using the dilution formula, we can obtain the volume of the diluted solution as follow:

M₁V₁ = M₂V₂

14 × 523 = 0.0428 × V₂

7322 = 0.0428 × V₂

Divide both side by 0.0428

V₂ = 7322 / 0.0428

V₂ = 171074.8 mL

Therefore, the volume of the diluted solution is 171074.8 mL

9. Determination of the volume of water added.

We'll begin by calculating the final volume of the solution. This can be obtained as follow:

Initial Molarity (M₁) = 3.2 M

Initial volume (V₁) = 973 mL

Final Molarity (M₂) = 0.7 M

Final volume (V₂) =?

M₁V₁ = M₂V₂

3.2 × 973 = 0.7 × V₂

3113.6 = 0.7 × V₂

Divide both side by 0.7

V₂ = 3113.6 / 0.7

V₂ = 4448 mL

Thus, the final volume of the solution is 4448 mL

Finally, we shall determine the volume of water added. This can be obtained as follow:

Initial volume (V₁) = 973 mL

Final volume (V₂) = 4448 mL

Volume of water added =?

Volume of water added = V₂ – V₁

Volume of water added = 4448 – 973

Volume of water added = 3475 mL

Is a hydrogel a smart polymer/stimuli-responsive polmer?​

Answers

Polymer scientists have been trying to mimic this behavior by creating so called smart polymers. ... One of the most important classes of stimuli-responsive polymers used for controlled drug delivery is crosslinked polymer networks, e.g., hydrogels and microgels.
Hopefully this helps if not I’ll try rewriting it

Answer:

Polymer scientists have been trying to mimic this behavior by creating so called smart polymers. ... One of the most important classes of stimuli-responsive polymers used for controlled drug delivery is crosslinked polymer networks, e.g., hydrogels and microgels.

Explanation:

What reactants form a combustion reaction?

Answers

Answer:

Hydrocarbon and oxygen

Explanation:

"a substance reacts with oxygen gas, it must involve O² as one of the reactants."

Using this, we can confirm Hydrocarbon and oxygen is a valid one.

Which organelle stores the information that determines an individual blood type

Answers

Answer:organelle 1

Explanation:

Organulo 1 is the organelle that  stores the information that determines an individual blood type. The correct option is option A.

What is organelle?

A tiny cellular component known as an organelle serves a specialised purpose within a cell. The cytoplasm of prokaryotic and eukaryotic cells contains organelles. Organelles are frequently encased by a separate membrane in eukaryotic cells because they are more complicated.

Similar to the internal organs of the body, organelles are specialised and carry out important tasks required for proper cellular function. Organelles are responsible for a variety of tasks, such as powering a cell's energy needs and regulating its development and reproduction. Organulo 1 is the organelle that  stores the information that determines an individual blood type.

Therefore, Organulo 1 is the organelle that  stores the information that determines an individual blood type. The correct option is option A.

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Your question is incomplete but most probably your full question was,  

Balance the following reaction:
C2H6(g) + O2(g) → CO2(g) + H2O(g)

Answers

2 C2H6(g)+ 7 O2(g)-> 4 CO2(g) + 6 H2O(g)

To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. Therefore, the balanced equation is

2C[tex]_2[/tex]H[tex]_6[/tex](g) + 7O[tex]_2[/tex](g) → 4CO[tex]_2[/tex](g) + 6H[tex]_2[/tex]O(g)

What is Balanced equation?

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.

C[tex]_2[/tex]H[tex]_6[/tex](g) + O[tex]_2[/tex](g) → CO[tex]_2[/tex](g) + H[tex]_2[/tex]O(g)

Multiply by 7 on reactant side and by 6 on product side to balance oxygen

C[tex]_2[/tex]H[tex]_6[/tex](g) + 7O[tex]_2[/tex](g) → CO[tex]_2[/tex](g) + 6H[tex]_2[/tex]O(g)

Now balance carbon and hydrogen

2C[tex]_2[/tex]H[tex]_6[/tex](g) + 7O[tex]_2[/tex](g) → 4CO[tex]_2[/tex](g) + 6H[tex]_2[/tex]O(g)

Therefore, the balanced equation is

2C[tex]_2[/tex]H[tex]_6[/tex](g) + 7O[tex]_2[/tex](g) → 4CO[tex]_2[/tex](g) + 6H[tex]_2[/tex]O(g)

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What are the 2 common uses for Copper?

Answers

for electrical equipment such as wiring and motors. also for construction exm. roofing and plumbing, and industrial machinery
Copper's most common use is in electrical equipment such as wiring and motors. Copper is also used in roofing, guttering, plumbing, cookware and cooking utensils.

Como se explica o fato de o diamante e o grafite serem formados pelo mesmo elemento, o carbono, e serem materiais completamente diferentes?

Answers

Answer:

Ver explicacion

Explanation:

La capacidad de un elemento de existir en diferentes formas en el mismo estado físico se conoce como alotropía.

No es solo el carbono el que exhibe alotropía. También se sabe que el azufre y el fósforo exhiben alotropía.

Hay dos alótropos cristalinos de azufre; grafito y diamante. El grafito y el diamante difieren en la disposición de los átomos de carbono y la naturaleza de los enlaces entre los átomos de carbono en ambas sustancias.

Por lo tanto, el grafito y el diamante tienen propiedades físicas y químicas observadas completamente diferentes debido a las diferencias en la disposición de los átomos de carbono en cada sustancia, así como a las diferencias en la naturaleza de los enlaces entre los átomos de carbono en ambas sustancias.

Neptune is 30 AU (astronomical units) from the sun. How long, in light minutes, would it take for light from the sun to reach Neptune?

Answers

Answer:

250 light minutes takes

Explanation:

1 astonomical unit is equal to 1.50x10¹¹m

The light travels at the speed of 3.0x10⁸m/s. That means in 1 second, travels 3.0x10⁸m. To solve this question we must find the distance of neptune to the sun in meters. In this way we can find the seconds (And minutes) that need the light to travel from the sun to neptune:

Distance from Sun to neptune:

30AU * (1.50x10¹¹m / 1AU) = 4.5x10¹²m

Time transcurred:

4.5x10¹²m * (1s / 3.0x10⁸m) = 15000s

15000s * (1min / 60s) =

250 light minutes takes

States of Matter Escape Room

Matter is defined as anything that has

A. Phase changes and mass
B. Atoms and density
C. Color and weight
D. Volume and mass

Answers

Answer:

A

Explanation:

matter has mass and undergoes a phase change

one example of potential energy.

Answers

Answer:

a raised weight

water that is behind the dam

a car that is parked at the top of a hill

a you before it released

a ripe fruit before It falls

which of the following is true about these diagrams

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Answer:

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Hydrocarbons separated by fractional distillation of petroleum can be cracked to make
useful shorter chain products.
Which substance is not a product of the cracking of propane, M, 44?
A C.Hg
B C2H4
C C3H6
DH2
Q Zoom image
Answer:
{ x R X
Daraaranh
a
o
זחו

Answers

Answer:

c.hg cannot be cracked for fractional distillation as there is only one of each

Explanation:

Other Questions
Some issues that Americans disputed in the 1800s are still controversial today. Which of the following continues to be an issue today and contributed to the divisions that caused the Civil War? Some people support states' rights, while others believe that the federal government should hold more power. Some people believe that the "mudsill theory" helps create a balanced society, while others believe that hurts the economy. Some people believe that the nation should have been divided into two countries, while others believe that each state should be independent. Some people believe that we need more railroads, while others believe that the Transcontinental Railroad created hardship for the country. what are three concepts that relate to plato allegory "The Cave" Which french solider became a general in the french revaluation At the zoo, the length of each iguana is measured. Which statement is best supported by the information below?A. Over half of the iguanas measure 14 centimeters or more in length.B. 25% of the iguanas measure 12 centimeters in length.C. The number of iguanas that measure 15 centimeters or more is equal to the number that measure 11 centimeters or less. Which of the following statements correcetley describe the Glorious revolution?A.the outcome of the revolution used to justify the divine right to ruleB. the effects of the glorious revolutions led a social revolution in EnglandC.the effects of the glorious revolution threatened dutch maritime powerD.the outcome of the glorious revolution was welcomed across Europe E.the outcome of the glorious revolution established parliamentary supremacy Use the Venn diagram. Decide if each statement is true. Choose True or False for each statement. By following Jesuss teachings, Christians believe they can attain A violent incident occurred in India on April 13, 1919. It involved a British military commander ordering his forces to open fire on peaceful protesters. This incident sparked an international outrage.The incident was called the ------. hii please help asap ill give brainliest thanks A 3mL sample of a 200 Molar solution is left open on a labcounter for two weeks, after which the concentration of the solution is 6 M. What is the new volume of the solution? Do you agree with Friedman that monopolies are dangerous and that they exploit customers? Or do you feel they serve a positive purpose in the economy? 3) Bob deposits 15% of \$160 into a savings account, what is the amount of his deposit ? Pls answer questions 6,7,8, and 9 WHO EVER ANSWERS THE CORRECT ANSWER GETS BRAINLEST Under what condition can the Supreme Court strike down a law?a. when it goes against the Constitutionb. when it has been vetoed by the presidentc. when it does not have the support of a circuit courtd. when it does not have the support of two-thirds of Congress Why did John Locke feel the government "is not to provide for the truth of opinion but for the safety and security?" Summarize how the loss of energy between each level of an energy pyramid affects an ecosystem Two years ago there were 20 trailer homes on Elm Street with an average age of 18 years. At that time, a group of brand new trailer homes was then added to Elm Street. Today, the average age of all the trailer homes on Elm Street is 14 years. How many new trailer homes were added two years ago? How do you think culture shapes our view of acceptable andunacceptable behaviors? Do you think there are certain cultures where a wider range ofbehaviors are more acceptable than in other cultures, where there might be more strictrules that govern behavior? (This second question is relevant to a discussion of "tight" and"loose" cultures, see the reference below.) HELP ASAP!!! IF U SEND LINKS ILL REPORTThis question has two parts. First, answer part A. Then, answer part B.Part AThomas Edison invented film that moved past light. What happened as a result? A. Sound was matched to film. B. Films became a social event. C. Filmed objects became visible. D. Things appeared to be moving.Part BWhich sentence from the text describes this result? A. A few years later, in 1889, Thomas Edison developed a machine called the Kinetoscope. B. When people watched, it seemed as if filmed objects and humans were moving. C. Only one person at a time could watch the film, but viewers were amazed, and the Kinetoscope soon became very popular. D. In France in 1895, the Lumiere brothers created a machine that could take movies and show them, too. Find the value of x in the triangle shown below.