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3 years ago

12

[GT.02]Which of these forces in carbon-14 isotopes transforms a neutron into a proton?gravitational forceselectromagnetic forces

weak nuclear forcesstrong nuclear forces

1 answer:

Dmitrij [34]3 years ago

3 0

Answer:

The weak nuclear force.

Explanation:

This force is active in radioactivity.

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How many grams of FeS2 are needed to react with 95 g O2?

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Answer:

16.0 i think

Explanation:

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3 years ago

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3 years ago

Which of the fallowing elements has the largest atomic radius?

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3 years ago

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

steposvetlana [31]

Answer:

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

Explanation:

$2CuO+C\rightarrow 2Cu+CO_2$

1 Ton = 907185 grams

Mass of copper oxide = 1.0 Ton = 907185 grams

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:

$\frac{1}{2}\times 11403.95 mol=5,701.98 mol$ of carbon

Mass of 5,701.98 moles of carbon:

$5,701.98 mol\times 12 g/mol=68,423.75 g$

Mass of coke = x

Mass of carbon = 68,423.75 g

Percentage of carbon in coke = 95%

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

$x=720,250.09 g=0.794 Ton$

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

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3 years ago

Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reac

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The correct balanced chemical equation which occur when methane burn in oxygen gas is

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3 years ago

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