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bekas [8.4K]
2 years ago
11

How many atoms are in 25.0 grams of carbon?

Chemistry
1 answer:
mars1129 [50]2 years ago
5 0

mol = 25/12

= 2.083 mol

1 mol = 6.02 × 10^23 atoms

2.083 mol = X

X = 2.083/1 × 6.02 × 10^23

= 1.254 × 10^24 atoms

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What is the density of a liquid if it has a mass of 12.9g ?
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According to the oxygen-hemoglobin dissociation curve, PO2 in the lungs of 100 mm Hg results in Hb being 98% saturated. At high
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Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

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4 0
3 years ago
An element has an average atomic mass of 1.008 amu. It consists of two isotopes , one having a mass of 1.007 amu, and one having
dimulka [17.4K]

Answer:

The most abundant isotope is 1.007 amu.

Explanation:

Given data:

Average atomic mass = 1.008 amu

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X for the isotopes having mass  2.014 amu

1-x for isotopes having mass 1.007 amu

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we will use the following equation,

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6 0
3 years ago
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