3 years ago

This is a sign of a chemical reaction that involves a new color being created during the reaction.

1 answer:

5 0

Hey there!

When two or more substances combine, they create one or more new substances, which sometimes have different molecular structures from the original substances, meaning they absorb and radiate light in different ways, leading to a color change.

Hope this helps! :)

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marissa [1.9K]

Explanation:

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in the case of melting point it lowers the melting point

so I guess one of the samples Ie contained impurities

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How many moles of Na2SO4 can be made with 7.28 mol of H2SO4?

Slav-nsk [51]

Answer:

7.28 mol Na2SO4

Explanation:

Since it is already in moles, all we have to do is use a molar ratio

A molar ratio is the proportions of reactants and products using the balanced equation. When writing a mole ratio, the given information must cross out with the right thing.

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*notice how the H2SO4 crosses out

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