3 years ago

This lab question is: How can you distinguish a physical change from a chemical change?

1 answer:

4 0

Answer:b,and c

Explanation:

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Natali5045456 [20]

In reaction 2 moles of SO2 reacts with 5 moles of C...

So for 0.5 mole of SO2 we should have the same ratio ...

C/SO2 = 5/2

Is that clear?

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4 years ago

Shalnov [3]

Answer:

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3 years ago

Ostrovityanka [42]

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3 years ago

Kamila [148]

Answer: 2.8 moles of copper (Il) sulfide $(CuS)$ will be produced from 2.8 moles of sulphur.

Explanation:

The balanced chemical reaction is:

$Cu+S\rightarrow CuS$

According to stoichiometry :

1 mole of $S$ produce = 1 mole of copper (Il) sulfide $(CuS)$

Thus 2.8 moles of $S$ will produce= $\frac{1}{1}\times 2.8=2.8moles$ of copper (Il) sulfide $(CuS)$

Thus 2.8 moles of copper (Il) sulfide $(CuS)$ will be produced from 2.8 moles of sulphur.

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3 years ago

Vesnalui [34]

Answer:

i'm pretty good at it

Explanation:

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3 years ago