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3 years ago

The isotope of hydrogen that has two neutrons is called A. hydrogen. B. deuterium. C. tritium. D. dihydrogen.

Chemistry

1 answer:

lutik1710 [3]3 years ago

7 0

Answer:

C.Tritium

Explanation:

Isotopes are forms of an element with different mass number but same atomic number. Mass number is the sum of the number of protons and neutrons in the nucleus of an atom, while atomic number is the number of protons.

Mass number = protons +neutrons.

Atomic number = protons only

We can say that mass number = atomic number + number of neutrons.

The number of neutrons is what differentiates the isotopes of an element.

For hydrogen element, it has three isotopes namely; protium, deuterium and tritium which have 0,1 and 2 neutrons respectively. Thus the answer is C

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3 years ago

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Vesnalui [34]

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Given parameters:

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Unknown:

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3 years ago

How does stoichiometry work?

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Answer:

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Vitamin C contains the elements C, H, and O. It is known to contain 40.9% C and 4.58% H by mass. The molar mass of vitamin C has

soldier1979 [14.2K]

Answer:

C₆H₈O₆

Explanation:

First off, the percent of oxygen by mass of vitamin C is:

100 - (40.9+4.58) = 54.52 %

Assume we have one mol of vitamin C. Then we would have 180 grams, of which:

180 * 40.9/100 = 73.62 grams are of Carbon

180 * 4.58/100 = 8.224 grams are of Hydrogen

180 * 54.52/100 = 98.136 grams are of Oxygen

Now we convert each of those masses to moles, using the elements' respective atomic mass:

C ⇒ 73.62 g ÷ 12 g/mol = 6.135 mol C ≅ 6 mol C

H ⇒ 8.224 g ÷ 1 g/mol = 8.224 mol H ≅ 8 mol H

O ⇒ 98.136 g ÷ 16 g/mol = 6.134 mol O ≅ 6 mol O

So the molecular formula for vitamin C is C₆H₈O₆

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3 years ago