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mars1129 [50]
3 years ago
9

Which molecule is an alkene?

Chemistry
1 answer:
belka [17]3 years ago
4 0
D is an alkene because the ending is cis-2-pentene if it was an alkane is would be pentane.
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How many oxygen atoms are there in 582 grams of caffeine (CH10N402, 194 g/mol)? Avogadro's Number: 1 mole = 6.02 x 1023 species
Sergeu [11.5K]

Answer:

3.61 * 10 ²⁴atoms.

Explanation:

Moles is denoted by given mass divided by the molecular mass ,

Hence ,

n = w / m

n = moles ,

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m = molecular mass .

From the question ,

w = 582 g

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The number of moles can be calculated from the above formula , and substituting the respective values ,

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In the molecular formula of caffeine ,

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Therefore , in  3 moles of Caffeine there will be 6 moles of oxygen.

As well know ,

one mole of any substance contains 6.023*10²³ atoms,

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