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Klio2033 [76]
3 years ago
14

How many elements occur naturally on earth?

Chemistry
1 answer:
Sati [7]3 years ago
6 0
There are 92 that appear on the periodic table. However, there are elements that occur in trace amounts naturally which brings the number to 98 natural elements on Earth.
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a compound is decomposed In the laboratory and produces 1.40 g N and 0.20g H what is the empirical formula
Bumek [7]

First, find the number of moles for each element. The molar mass for nitrogen is 14 g/mol and that of hydrogen is 1 g/mol.

1.40 g N / 14 g/mol = 0.1 mol N

0.20 g H / 1 g/mol = 0.2 mol H

Find the mole ratio. Divide both numbers with the much lower value. In this case, it is 0.1 mol N.

For N: 0.1 ÷ 0.1 = 1

For H: 0.2÷0.1 = 2

Thus, the empirical formula is NH_{2}.

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So here the answer is vaporization!!!!

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The most state has the high volume is the gas state.

So here the answer is between vaporization and sublimation???

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