Calculate the number of moles of 2.00g of K2SO4

Answers

Answer 1
2.00g K2SO4 * (1 mol K2SO4 /174.56g K2SO4) = 0.0115 mol K2SO4

Related Questions

The growth of the plants that the animal used for food could not keep up with the needs of the population. There was so little food for the animals, the population declined. How does this relate to overpopulation?

Question options:

This does not relate to overpopulation.


Overpopulation means that there are too many members in the population and that in the end, this will severely hurt their chances for survival.


Overpopulation means that there are too many members in the population and that in the end, this will increase their chances for survival.


Overpopulation means that there are few members in the population and that in the end, this will increase their chances for survival.

Answers

Answer:

The number of animals greatly exceeded the carrying capacity, destroying the food sources and causing the population to decline.  

ALSO

Overpopulation means that there are too many members in the population and that in the end, this will severely hurt their chances for survival.

Explanation:

The statement relates to overpopulation as overpopulation means that there are too many members in the population and that in the end, this will severely hurt their chances for survival.

What is overpopulation?

Overpopulation means an increase in the number of a specific population in a specific place.

Overpopulated species harm other species. It competes for the food and place.

It also decreases the number of species that are its prey.

Thus, the correct option is B.

Learn more about overpopulation

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If the graph of y = a x 2 + b x + c does not intersect the x -axis, then what is true about the roots? Both are real roots. Both are real roots. Both are imaginary roots. Both are imaginary roots. One is a real root, and one is irrational. One is a real root, and one is irrational. One is a real root, and one is rational.

Answers

Answer:

Both roots are imaginary roots.

Explanation:

Consider these things:

If we try to solve x²+1 = 0, notice that we aren't able to solve the equation in Real Number system because there are no negative outputs for quadratic function.

Remember that quadratic function has range greater or equal to the max-min value.

x-axis plane represents the solutions of that equation. If a graph intersects x-axis plane then it has a solution.

While a graph that doesn't have any intersects on x-plane, it means that the equation for that graph doesn't have real solutions but imaginary solutions.

As you may notice some of parabola graph has one intersect, two intersects or none. One intersect is one solution to the equation — Two intersects are two solutions of the equation and lastly, no intersects mean that no real solutions and remain only imaginary solution.

What is the molar mass of H2S?
0 518
65.15 g
17 g
78.16 g
34.1g

Answers

H - 1
S - 32.1

(1*2) + 32 = 2 + 32.1 = 34.1

34.1 g is the answer

Zinc reacts with Copper (II) chloride to produce Copper and Zinc chloride. -write chemical formula​

Answers

Answer:

here's the answer hope it helps

why should Asus be stores only in the glass containers please answer this ​

Answers

Answer:

Do you mean acids?

Due to chemical reaction

Explanation:

Acids are only stored in glass containers because glass containers rarely react with any substance.They dont react with acids and prevent chemical reaction so the acids can be kept. If acids were kept in metal containers it would react .

If you have 3 mol of glucose in 6 L of solution, what is the molarity of the
solution?

Answers

Answer:

0.5 M

Explanation:

Molarity = moles of solute / liters of solution

how does the human voice work

Answers

Answer:

vocla cords

Explanation:

When you want to speak, you close your vocal folds and begin to exhale, causing an increase in pressure that starts your vocal folds to vibrate. The vibration of vocal folds chops the air flow, producing a buzz-like sound

Which best describes the purpose of a fever?

Answers

Answer:

when you have a fever your body is trying to fight off a virus or some other kind of bad Bacteria  

Explanation:

I think this because everyone has at least had a fever when they were sick and when you are sick you are likely to have a fever because your body is fighting off a bad bacteria  

Need help. Will pay if needed, or give away points. CHEMISTRY

Answers

Answer:

C. So electrons can flow from one electrode to another

Explanation:

An electrochemical cell is any cell in which electricity is produced by reason of a chemical change.

An electrochemical cell consists of two electrodes, these two electrodes are connected using a wire.

Usually, electrons flow from one electrode to another via this wire thereby enabling the electrochemical processes of oxidation and reduction in the cell to proceed effectively.

explain what conservation of mass is and how to calculate it

Answers

Since atoms are not lost or made in a chemical reaction, the total mass of the products is equal to the total mass of the reactants.The sum of the relative formula masses of the reactants is equal to the sum of the relative formula masses of the products.

Which of the following can be used to measure an object's
speed?

Answers

Answer:

distance traveled divided by the time it traveled

Explanation

this is just an equation for how to find speed. you can also just use like a meterstick and a stopwatch

How many ounces is 68 g?
O A. 0.42 oz
O B. 28.3 oz
O C. 4.8 oz
O D. 2.4 oz

Answers

Answer:

D

Explanation:

Balance Cl2+NaBr=NaCl+Br2​

Answers

Cl2 + 2NaBr → 2NaCl + Br2

Which process is represented by the label A?

Answers

Answer:

I believe its compaction

Explanation:

Compaction is how sedimentary rock is formedm

I think it’s weathering and erosion hmm..not sure tho

How many moles of NaOH are in a 50.0 g sample of NaOH?

Answers

Answer:

The answer should be, 0.01

Explanation:

0.01 = moles of NaOH

[tex] \huge\boxed{ \boxed{\boxed{ \boxed{\mathcal{Answer ࿐ }}}}}[/tex]

[tex] \mathrm{1 \: mole \: of \: NaOH = 40 \: g }[/tex]

[tex] \mathrm{1g = \dfrac{1}{40} \: moles \: of \: NaOH}[/tex]

[tex] \mathrm{50g = \dfrac{1}{40} \times 50}[/tex]

[tex] \mathrm{1.25 \: moles \: of \: \: NaOH}[/tex]

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe?
A. homogeneous mixture
B. compound
C. heterogeneous mixture
D. element

Answers

A. Homogeneous mixture
A.) homogenous mixture

what are the three method used to treat water ?​

Answers

Answer:

The three methods used to treat water are

Filtration SedimentationDistillation

Explanation:

These methods used include physical processes, biological processes such as slow sand filters or biologically active carbon; chemical processes such as flocculation and chlorination; and the use of electromagnetic radiation such as ultraviolet light.

Which of the following represents alpha decay?

Answers

Answer: b

Explanation: alpha decay or particle consist of two protons and two neutrons hence it is a helium nucleus.

An alpha particle [tex]\binom {4} {2}[/tex]He is produced in alpha decay reactions, while the parent nucleus' atomic number and mass number drop by 2 and 4 correspondingly.

Alpha decay:

Alpha decay is a nuclear process whereby an unstable nuclear transforms into a different element by ejecting particles composed of two protons and two neutrons. The alpha particle also referred to as a helium nucleus, is the expelled unit of matter. Alpha particles have large masses and electrostatic attraction.An atomic number decreases by 2 and the atomic weight drops by 4 when a radioactive nucleus disintegrates by emitting [tex]\bold{\alpha}[/tex] particle.

Therefore, the final answer is "Option B".

Find out more about the alpha decay here:

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How much of a 10 M solution is needed to make 1 liter of a 1M solution?
a. 1ml
b. 1000ml
c. 10ml
d. 100ml

Answers

i dont know I hope someone knows soon take care

According to molar concentration, 100 ml of 10 M solution is needed to make 1 liter of a 1 M solution.

What is molar concentration?

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.In case of two solutions, molar concentration is found out by, M₁V₁=M₂V₂.

On substitution in above formula, V₁=1×1/10=0.1 L=100 ml.

Thus, 100 ml  of a 10 M solution is needed to make 1 liter of a 1 M solution.

Learn more about molar concentration,here:

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#SPJ2

Why are shadows shorter around noon?
Make sure you give a full, detailed answer, not just one sentence.

Answers

Answer: Answer is in the Explanation.

Explanation: At noon the sun is directly above in the sky, the sun's rays are falling on the body making the shadow smaller. While in the evenings and mornings the sun is at a inclined position, so the sun's rays are falling at a inclined position making the body's shadow larger.  

I looked it up on the internet and reworded it as good as I could.

6. What is the atomic number of the element?
7. How many neutrons does this element have?
8. What is the atomic mass of this element?
9. How many electrons does this element have?

Answers

Answer:

For O: atomic number = 8 # neutrons = 8

For Al: atomic mass = 27, # electrons = 13

20. Calculate the volume of 847 g of SO2 gas at a pressure of 89.4 kPa and 40 °C.
JUST NEED THIS LAST ONE SOMEONE HELP ME ITS DUE SOON

Answers

Answer:

243L of SO2

Explanation:

You'll want to use the Ideal Gas Law for this problem.

First, determine your formula. V=nRT/P

Next, determine your factors.

V = ?

n = 847g

R = 0.0821L.atm/mol.k

T = 313k (40+273)

P = 89.4kPa

Now just plug it in!

847g x 313k / 89.4kPa  x  0.0821L.atm / mol. K

243L of SO2. Hope this helps!

Energy is added to cool water in a beaker. The energy causes the temperature of the temperature to rise. Which term best describes the energy? (A) Heat energy, (B) Chemical energy, (C) Electrical energy, (D) Potential Energy.

Answers

Answer:

(A) Heat energy

Explanation:

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.

In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.

Any material or object that allow the conduction (transfer) of electric charge or thermal energy is generally referred to as a conductor. Conductors include metal, steel, aluminum, copper, frying pan, pot, spoon etc.

In this scenario, Energy is added to cool water in a beaker. The energy causes the temperature of the temperature to rise. Thus, the term which best describes the energy is heat energy because the object becomes hotter due to an increase in temperature and heat applied.

List ways on how to lessen human impacts in the environment

Answers

Answer:

Explanation:

Completely turn off equipment like televisions and stereos when you're not using them.

Choose energy-efficient appliances and light bulbs.

Save water.  

Lower your shades or close your curtains on hot days, to keep the house cool and reduce the use of electric fans or air-conditioning.

Let clothes dry naturally.

Keep lids on pans when cooking to conserve energy.

Use rechargeable batteries.

Don’t use “throw away” products like paper plates and napkins, or plastic knives, forks and cups.

Send electronic greetings over email, instead of paper cards.

Identify the two acids and the two bases out of the 5 chemicals below: NaOH/ HCI /H2SO4/ Ca(OH)2 /NaBr *​

Answers

Answer: NaOH and Ca(OH)2 are bases. HCl and H2SO4 are acids

Explanation:

if (H+] = 10^-2 M
what will be pH = ?

Answers

pH = -log[H+]
pH = -log(10^-2)
pH = 2

What are surface currents? What drives them?

Answers

Answer:

Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun. Patterns of surface currents are determined by wind direction, Coriolis forces from the Earth's rotation, and the position of landforms that interact with the currents

I'm just straight confused by it​

Answers

Answer:

B

Explanation:

(Usually give an explanation, but doing an exam, so just trust)

Copper (II) reacts with silver nitrate in a single displacement reaction. How many grams of copper are needed to react with 510 grams of silver nitrate?

Answers

To start with this is stoichiometry so you need a mol to mol ratio. But because you have grams and end in grams you need to convert from grams to mol using a conversion factor. I took a picture of my work below:

The answer is 95.39 g Cu

IF YOU DON'T ANSWER IT CORRECTLY OR IN AT LEAST A DECENT WAY< I WILL REPORT!!! I'm giving 30 points for this!!!!

List the different signs that tell you a chemical reaction may have occurred.
Then for each sign, write down TWO examples from day to day life where you have seen these reactions occur. (you should have 10 total; try to come up with examples on your own. although you may have to research the one where a solid is formed.)

Answers

Answer:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid)

Chicken turning color

Explanation:

I have when i have put a mint in the coke and it exploded and then another is when i dyed my water purple for no reason and when i heat water it start do evaporate or bubble and water turning into ice and when you know  you cook chicken the chicken is pink then when you season the chicken it turn golden brown and when you put milk and cereal together and if you leave it in to long it get soggy.

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