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Ymorist [56]
3 years ago
8

How do I see answer to question already asked by someone else that I need immediately?!

Chemistry
1 answer:
Alecsey [184]3 years ago
3 0
Did the someone else have answers? If not then ask again in hopes of someone checking yours out :)
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Hello I need help very bad!!!
Oksanka [162]

D. Cell membrane: surrounds a cell and allows substances to pass in and out

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3 years ago
2. elements or compounds present before the chemical reaction
Amanda [17]

Answer: These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.

Explanation:

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I NEED HELP ASAP!!!!!! IM ON TIMER.
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What is the volume occupied by 3.00 mol of hydrogen gas at STP? *
xxTIMURxx [149]

Answer: V=67.2 L

Explanation:

For this problem we will need to use the Ideal Gas Law.

Ideal Gas Law: PV=nRT

P=1.00 atm (STP)

V=?

n=3.00 mol

R=0.08206Latm/Kmol

T=273.15 K (STP)

To find V, we would manipulate the equation to V=nRT/P

V=\frac{(3.00 mol)(0.08206Latm/Kmol)(273.15K)}{1.00 atm}

V=67.244 L

With significan figures, our answer is V=67.2 L.

6 0
3 years ago
If two objects have the same density, they must have the same
Radda [10]

Answer:

no ,its not necessary tht two objects have same volume have the same mass because the density of the material they are made up of can be different. mass and volume areindependent, two objects with thesame volume can have differentmasses. Therefore, the objects can have different densities.

7 0
3 years ago
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