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irina1246 [14]
3 years ago
5

Please help, 15 points

Chemistry
1 answer:
oee [108]3 years ago
5 0

1rst is D, second is A

Explanation:

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H2O+O2=H202, how would I balance this equation?
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Answer:

2H2O2→2H2O+O2

Explanation:

This reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

Add 2 molecules of hydrogen peroxide and 2 molecules of water. Since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

2H2O2→2H2O+O2

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3 years ago
The total pressure in a mixture of gases is equal to the partial pressures of
baherus [9]

Answer:

"The total pressure in a mixture of gases is equal to the sum of partial pressures of each gas"

Explanation:

Dalton's law of partial pressures state that, in a mixture of gases, the total pressure is equal to the sum of the partial pressure exerted by each gas of the mixture. The equation is:

Total pressure = Partial pressure Gas 1 + Partial pressure Gas 2 + .... + Partial pressure Gas n

To complete the sentence we can say:

"The total pressure in a mixture of gases is equal to the sum of partial pressures of each gas"

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2 years ago
How many grams of silver chromate, Ag2CrO4, are produced from 57.7
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3 years ago
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Makovka662 [10]
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Which of the following is not radiation ? A. baking in a metal pan in the oven , B. heat from a fire , C. microwaving food , or
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C.

Explanation:

5 0
3 years ago
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