A compound of iodine and cesium contains 63.94 g of metal and 61.06 g of nonmetal. How many grams of cesium are in 42.99 g of compound?

Upon decomposition, one sample of magnesium fluoride produces 1.66 kg of magnesium and 2.58 kg of fluorine. A second sample produces 1.35 kg of magnesium. How much fluorine (in grams) does the second sample produce?

What is the mass in grams of 8.22 x1023 magnesium atoms, each having a mass of 24 amu? 1 amu = 1.660539x10-24 g

Consider a sample of carbon tetrafluoride that contains 1.01 × 1024 atoms of fluorine. What is the chemical formula of carbon tetrafluoride?

A certain element XX has four isotopes. 5.845% of XX has a mass of 53.93961amuamu. 91.75% of XX has a mass of 55.93494amuamu. 2.123% of XX has a mass of 56.93539amuamu. 0.2820% of XX has a mass of 57.93328amuamu. What is the average atomic mass of element XX?

Calculate the mass, in grams, of 602 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

For which element does a sample of 1.5055 × 1024 atoms have a total mass of 70.215 g? P, Si, S

When 4.00 g of sulfur are combined with 4.00 g of oxygen, 8.00 g of sulfur dioxide (SO2) are formed.   What mass of oxygen would be required to convert 6.00 g of sulfur into sulfur trioxide (SO3)?

How many atoms are contained in a block of aluminum metal measuring 6.0 mm x 5.0 mm x 15 mm? The density of aluminum is 2.7 g/cm3.

A 7.83 gram sample of a compound made of hydrogen, carbon, and nitrogen is found to contain 0.290 g hydrogen and 4.06 g nitrogen. How much carbon (in grams) is there in a 3.37 g sample of this same compound?