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ivann1987 [24]
2 years ago
13

I really need some help and explaining with the Heat of Combustion Lab.

Chemistry
1 answer:
Nataly_w [17]2 years ago
6 0
<span>Combustion means the elements or compound can be burned, but burning which is a chemical process requires oxygen; combustion reaction typically takes place in the presence of air. The combustion of methane is as follows: CH4(g) + 2 O2(g) -> CO2(g)+ 2 H2O(g) + energy One mole of gaseous methane reacts with two oxygen molecules to form a carbon dioxide molecule, and two water molecules which is given off as water vapor. The reaction involves the release of heat.</span>
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Answer:

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Explanation:

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3 0
3 years ago
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What characteristics do the elements in a group share? In a period, share?
Katyanochek1 [597]

Answer:

The elements in same period have same principle quantum number or energy shell.

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Explanation:

Inn group:

The elements in same group i.e present in vertical column shows similar chemical properties.

The elements in same group having same number of valance electrons. while in chemical reaction bonds are break and formed and valance electrons are involved. That's why elements in same group having same number of valance electrons and shows similar chemical properties.

In period:

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3 0
3 years ago
density of a sample of tin is 8 g/'ll when the actual density was 7.28 g/ml. what was the percentage error
riadik2000 [5.3K]

9.9%

|Approximate Value − Exact Value| divided by

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7 0
3 years ago
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Mashcka [7]
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olga2289 [7]
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4 0
3 years ago
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