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ChemistryChemistry
8 March, 01:48

What is the molar mass of CaCl2?

110 g/mol

75.5 g/mol

37 g/mol

54 g/mol

What is the molar mass of Ca (OH) 2

100 g/mol

37 g/mol

74 g/mol

57 g/mol

What percent of is calcium in Ca (OH) 2?

43.4%

2.7%

70.2%

54.1%

Convert 45.5 cm to m?

.455 m

4550 m

45500 m

.0455 m

Convert 30.5 mm to km?

3.05 X 10^5 km

3.05 X 10^-5 km

3050 km

.305 km 6

+5
Answers (1)
  1. 8 March, 03:16
    0
    Molar mass of CaCl2 = 40 + (35.5 * 2) = 110

    Mr of Ca (OH) 2 = 40 + (16+1) * 2 = 74

    %of Ca = (40: 74) * 10 = ...

    1 m = 100cm ...

    1cm = (1:100) m

    So 45.5 cm = 45.5 * (1:100) = ...

    1km = 1000m

    1m = 100 cm

    1cm = 10mm

    So 1km = 1000*100*10 mm

    Now convert
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Home » Chemistry » What is the molar mass of CaCl2? 110 g/mol 75.5 g/mol 37 g/mol 54 g/mol What is the molar mass of Ca (OH) 2 100 g/mol 37 g/mol 74 g/mol 57 g/mol What percent of is calcium in Ca (OH) 2? 43.4% 2.7% 70.2% 54.1% Convert 45.5 cm to m? .
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