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Zina [86]
3 years ago
13

What is the percentage of oxygen in carbon dioxide (CO2)

Chemistry
1 answer:
pychu [463]3 years ago
5 0

Explanation:

carbon dioxide has a percent composition of 72.7% oxygen, i.e. for every 100 g of carbon dioxide you get 72.7 g of oxygen.

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The abbreviation that represents a volume unit is cm3 (as long as that is supposed to be cm^3)
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What happens to chemical bonds during a chemical reaction?
horsena [70]

the bonds that keep the molecules together break apart and form new bonds during chemical reactions.

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The specific heat of palladium is 0.239 J/g°C. How much heat (q) is released when a 10.0 g piece of platinum cools from 100.0°C
Andrej [43]

Answer:

119.5 J

Explanation:

First we <u>calculate the temperature difference</u>:

  • ΔT = 100 °C - 50 °C = 50 °C

Then we can <u>calculate the heat released</u> by using the following formula:

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Where q is the heat, Cp is the specific heat, ΔT is the temperature difference and m is the mass.

We <u>input the data</u>:

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7 0
3 years ago
Is freshwater a mixture?
dem82 [27]

Answer:

No

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What structural units make up network solids
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