3 years ago

Express 2/10 in scientific notation

Chemistry

1 answer:

Novay_Z [31]3 years ago

5 0

The answer would be 2.0 x 10^-1

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HRISTINA HERRERA: Attempt 1

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Answer:

7.5 g of hydrogen gas reacts with 50.0 g oxygen gas to form 57.5 g of water.

Explanation:

Here we have the check if the mass of the reactants is equal to the mass of the products.

Reactants

$7.5+50=57.5\ \text{g}$

Products

$57.5\ \text{g}$

The data is consistent with the law of conservation of matter.

Reactants

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Products

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The data is not consistent with the law of conservation of matter.

Reactant

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Products

$62.4\ \text{g}$

The data is not consistent with the law of conservation of matter.

Only the first data is consistent with the law of conservation of matter.

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