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valkas [14]
3 years ago
10

Which of the folloiwing determines the identity of an atom? a Number of Neutrons b Atomic Mass c None of these d Number of elect

rons e Number of Protons
Chemistry
1 answer:
garik1379 [7]3 years ago
5 0

Answer:

Number of protons

Explanation:

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A dehydration reaction (or condensation reaction) is the process in which _____.
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3 years ago
The combustion of 135 mg of a hydrocarbon produces 440 mg of CO2 and 135 mg H2O. The molar mass of the hydrocarbon is 270 g/mol.
NeX [460]

Answer:

Molecular formula = C20H30

Explanation:

NB 440mg = 0.44g, 135mg= 0.135g

From the question, moles of CO2= 0.44/44= 0.01mol

Since 1 mol of CO2 contains 1mol of C, it implies mol of C = 0.01

Also from the question, moles of H2O = 0.135/18= 0.0075mole

Since 1 mol of H2O contains 2mol of H, it implies mol of H = 0.0075×2= 0.015 mol of H

To get the empirical formula, divide by smallest number of mole

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Multiply both by 2 to obtain a whole number

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Molecular formula= [C2H3]10= C20H30

5 0
3 years ago
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