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Irina-Kira [14]
3 years ago
14

I need help with balancing equations I'm doing homework and idk what to do here can you give me the answers please lol

Chemistry
1 answer:
amm18123 years ago
3 0

It's pretty easy to balance equations! Basically you want to make sure that the number of each compound is equal on both sides of the arrow.

For example number one is

Fe + H2SO4 -> Fe2(SO4)3 + H2

A 3 in front of H2SO4 because there's a subscript of 3 on the right side.

Then a 3 in front of H2 because of the previous step.

Then add a 2 in front of Fe because of the 2 subscript in Fe2(SO4)3

Then add a 1 in front of Fe2(SO4)3 because you already have an equal number of each element.

<u>2</u>Fe + <u>3</u>H2SO4 -> <u>1</u>Fe2(SO4)3 + <u>3</u>H2

I hope this explanation helps! You should really do your homework because practice is everything when it comes to chemistry. You'll need to know how to do it for exams.  

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A 7.60 L balloon contains 2.67 moles of oxygen gas. Some oxygen is released, so the only 1.78 moles of oxygen remain in the ball
Slav-nsk [51]

Answer:

V₂ =  5.07 L

Explanation:

Given data:

Initial volume of balloon =  7.60 L

Initial number of moles of oxygen = 2.67 mol

Final number of moles of oxygen = 1.78 mol

Final volume of balloon = ?

Solution:

According to the Avogadro law,

Number of moles of gas and volume are directly proportional to each other at constant temperature and constant pressure.

Mathematical relationship:

V₁/n₁ = V₂/n₂

No we will put the values.

7.60 L / 2.67 mol = V₂/1.78 mol

V₂ = 7.60 L× 1.78 mol/ 2.67 mol

V₂ = 13.528 L. mol /2.67 mol

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A 222 N force is required to keep an object moving along a circular path with a diameter of 11.6 m at a speed of 7.60 m/s. What
Arte-miy333 [17]

Answer:

m=22.3\ kg

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3 years ago
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