How many O atoms of mass 15.99 amu are in 15.99 g of oxygen?

How many moles of ions are in 1.75 mol of K2SO4?

Caffeine has the formula C8H10N4O2. If an average cup of coffee contains approximately 125 mg of caffeine, how many moles of caffeine are in one cup?

Find the mass in atomic mass units of the following:a. 1 O atom, with a mass of 2.66 * 10^-23 gb. 1 Br atom, with a mass of 1.31 * 10^-22 g

The principal component of many kidney stones is calcium oxalate, CaC2O4. A kidney stone recovered from a typical patient contains 8.5 x 10^20 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone? What is the mass of the kidney stone in grams?

Calcium citrate, Ca(C6H5O7)2(MW = 498.5 amu), is a common dietary supplement to provide calcium needed for strong teeth and bones.What mass of calcium citrate would be needed to provide the recommended daily intake of calcium?

Obtain a bottle of aspirin and identify the amount of active ingredient (acetylsalicylic acid, C9H8O4) per tablet.How many moles of aspirin are in one tablet?

Pyrite, also known as fool's gold, is used commercially to produce SO2 used in the production of paper products.How many moles of SO2 can be produced from 1.0 kg of pyrite?

Using the models of the molecules (black = C, white = H, yellow = S, green = Cl), determine each of the following for models of compounds 1 and 2: (7.1, 7.2, 7.3)1.

2.

c. number of moles in 10.0 g