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pickupchik [31]
3 years ago
13

Which solid is crumbly, weak, red-brown and in the periodic table (It's probably a metal)

Chemistry
1 answer:
slega [8]3 years ago
5 0
I think is nitrogen!!!
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A 5.00-L tank contains helium gas at 1.50 atm. What is the pressure of the gas in mmHg
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8 0
2 years ago
What is the mass of carbon in 500. g of octane?
denis23 [38]

The answer is: the mass of carbon is 420.6 grams.

m(C₈H₁₈) = 500 g; mass of octane.

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n(C₈H₁₈) = m(C₈H₁₈) ÷ M(C₈H₁₈).

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n(C₈H₁₈) = 4.38 mol; amount of octane.

In one molecule of octane, there are eight carbon atoms:

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m(C) = 420.6 g; mass of carbone.

5 0
3 years ago
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