Textbook Question
How many moles of ions are in 27.5 g of MgCl2
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How many moles of ions are in 27.5 g of MgCl2
How many moles of anions are in 35.6 g of AlF3?
What is the molecular weight of chloroform if 0.0275 mol weighs 3.28 g?
Iron(II) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4 are present in a standard 300 mg tablet? How many iron(II) ions?
The 'lead' in lead pencils is actually almost pure carbon, and the mass of a period mark made by a lead pencil is about 0.0001 g. How many carbon atoms are in the period?
An average cup of coffee contains about 125 mg of caffeine, C8H10N4O2. How many moles of caffeine are in a cup? How many molecules of caffeine?