1.1 In each case , decide if the underlined property is a physical or chemical property. a) The color of elemental bromine is orange -red. b) Iron turns to rust in the presence of air and water. c) The density of titanium metal is 4.5 g/m3.
1.1 In each case , decide if the underlined property is a physical or chemical property.
a) The color of elemental bromine is orange -red.
b) Iron turns to rust in the presence of air and water.
c) The density of titanium metal is 4.5 g/m3.
1.2 A piece of turquise is a blue green solid, it haas a density of 2.65 g/cm3 and mass of 2.5 g. Which of these observations are qualitative and which are quantitative?
1.3 Calculate the mass in grams of:
a) 4.24 mol of gold
b) 15.6 mol helium
1.4 An organic compound has the empirical formula C2H4NO. If its molar mass is 116.1 g/mol, what is the molecular formula?
1.5 Calculate the mass percentage of caffiene (C8H10N2O2).
1.6 Give the symbol and the correct charge for each of the following ions:
a) Barium ion
b) Titanium (IV) ion
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