Chapter 3: Q.5E (page 166)
Determine the molecular mass of the following compounds:
(a)
(b)
(c)
(d)
Short Answer
The total molecular or formula mass of each compound will be:
(a)56 amu
(b)54 amu
(c)200 amu
(d)97 amu
Chapter 3: Q.5E (page 166)
Determine the molecular mass of the following compounds:
(a)
(b)
(c)
(d)
The total molecular or formula mass of each compound will be:
(a)56 amu
(b)54 amu
(c)200 amu
(d)97 amu
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Get started for freeDetermine the number of moles of the compound and determine the number of moles of each type of atom in
each of the following:
(a) 2.12 g of potassium bromide, KBr
(b) 0.1488 g of phosphoric acid, H3PO4
(c) 23 kg of calcium carbonate, CaCO3
(d) 78.452 g of aluminum sulfate, Al2(SO4)3
(e) 0.1250 mg of caffeine, C8H10N4O2
What is the empirical formula of a compound if a sample contains 0.130 g of nitrogen and 0.370 g of oxygen?
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Determine the mass of each of the following:
(a) 2.345 mol LiCl
(b) 0.0872 mol acetylene, C2H2
(c) 3.3ร10โ2 mol Na2 CO3
(d) 1.23ร103 mol fructose, C6 H12 O6
(e) 0.5758 mol FeSO4(H2O)7
A 24.81-g sample of a gaseous compound containing only carbon, oxygen, and chlorine is determined to contain 3.01 g C, 4.00 g O, and 17.81 g Cl. What is this compoundโs percent composition?
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