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kykrilka [37]
3 years ago
10

The maximum CO2, concentration for natural CO2, cycles from over 800,000 years?​

Chemistry
1 answer:
bogdanovich [222]3 years ago
4 0

Answer:

Is this a true or false thing?

Explanation:

In that case would be true

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Coke is an impure form of carbon that is often used in the in- dustrial production of metals from their oxides. If a sample of c
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Answer:

The mass of coke needed to react completely with 1.0 ton of copper(II) oxide is 0.794 Ton.

Explanation:

2CuO+C\rightarrow 2Cu+CO_2

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Moles of copper oxide =\frac{907185 g}{79.55 g/mol}=11,403.95 moles

According to reaction, 2 moles of copper oxide reacts with 1 mole of carbon.

Then 11403.95 moles of copper oxide will react with:

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Mass of 5,701.98 moles of carbon:

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Mass of coke = x

Mass of carbon = 68,423.75 g

Percentage of carbon in coke = 95%

95\%=\frac{68,423.75 g}{x}\times 100

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The mass of coke needed to react completely with 1.0 ton of copper(II) oxide is 0.794 Ton.

3 0
3 years ago
40. What is the mass of 3 moles of H 2 O
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Answer:

54g

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mass of water  = ?

Solution:

To solve this problem, we use the expression below:

         mass  = number of moles x molar mass

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