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babunello [35]
3 years ago
5

How many bromine atoms are present in 37.5 g of CH2Br2?

Chemistry
1 answer:
ella [17]3 years ago
5 0
<span>37.8 g CH2Br2 X (1 mol CH2Br2 / 173.83 g) = 4.60X10^-3 mol CH2Br2

4.60X10^-3 mol CH2Br2 X (2 mol Br / 1 mol CH2Br2) X 6.02X10^23 atoms/mol = 5.54X10^21 bromine atoms</span>
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3 years ago
How many grams of oxygen are there in 45.7 grams of Ba(NO2),?
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First convert grams of Ba(NO2)2 to moles using the molar mass of Ba(NO2)2. Then use the mole ratio of 4 moles of oxygen per 1 mole of Ba(NO2)2 to convert to moles of oxygen. Then use the molar mass of oxygen to convert to grams of oxygen.

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3 years ago
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3 0
1 year ago
Indicate the correct number of sig figs
Dimas [21]

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Lady_Fox [76]

Answer:

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(d) alkaline earth metals: The chemical elements that are present in group 2 of the periodic table.

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7 0
3 years ago
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