t mass of oxygen is

How many miles of iron is in a 1kg sample of iron?

Ten billion molecules of water is decomposed into hydrogen and oxygen. How many molecules of hydrogen gas and oxygen gas are formed?

How is the mass of oxygen measured? Group of answer choices By taking the sum of the potassium chlorate mass and potassium chloride mass. By taking the difference of the potassium chlorate mass and the crucible and lid mass. By taking the difference of the potassium chlorate mass and potassium chloride mass. By measuring the mass after the final heating and subtracting the crucible and lid mass.

Determine the molar mass of Cu(NO,),. Provide an answer to two decimal places.

This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH;OC(CH,), A chemical engineer has determined by measurements that there are 93.9 moles of hydrogen in a sample of methyl tert-butyl ether. How many moles of oxygen are in the sample? Be sure your answer has the correct number of significant digits. Omol ?

How would the masses compare if the volumes were equal?

Acetylene (C,H,) gas is often used in welding torches because of the very high heat produced when it reacts with oxygen (O. gas, producing carbon dioxide gas and water vapor. Calculate the moles of acetylene needed to produce 1.50 mol of carbon dioxide. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. olo &

A chemist measures the amount of iodine solid produced during an experiment. He finds that 5.77 g of iodine solid is produced. Calculate the number of moles of iodine solid produced. Be sure your answer has the correct number of significant digits. | mol

A 0.231 g piece of solid magnesium reacts with gaseous oxygen from the atmosphere to form solid magnesium oxide.  In the laboratory a student weighs the mass of the magnesium oxide collected from this reaction as 0.309 g.