4 years ago

The chemical and physical process that change things over time are called

Chemistry

1 answer:

Nikitich [7]4 years ago

6 0

Weathering and Erosion

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Calculate the pH of a 0.09 M solution of HBr

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3 years ago

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3 years ago

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4 years ago

Using the Hoffman apparatus for electrolysis, a chemist decomposes 2.3 moles of water into its gaseous elements. How many grams

solong [7]

Answer:

2.318032g

Explanation:

-The electrolysis equation of water is written as below:

$2H_2O_{(l)}->2H_2_{(g)}+O_2_{(g)}$

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$Mass=moles\times molar \ mass\\\\\=2.3\times 1.00784\\\\=2.318032\ g$

Hence, 2.318032 grams of hydrogen is produced.

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4 years ago

Fill in the blank to complete each statement.

son4ous [18]

Answer:

5.physical change

6.chemical change

7.physical change

8.conservation of mass

9.thermal energy

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I honeslty dont know if this is right

explanation:

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3 years ago