Paige heated 3.00 g mercury (ll) oxide (HgO 216.59 g/mol) to from mercury (Hg 200.59 g/mol) and oxygen (O2 32,00 g / mol). She collected 0.195 g oxygen. What was the percent yield of oxygen?

As a result of the interaction of 22 g of higher oxide of the element of the main subgroup of group IV with water, 31 g of acid was formed. Set the name of an unknown chemical element.

Nitric acid reacts with silver metal 4hno3 + 3ag = no + 2h2o + 3agno3. calculate the number of grams of no formed when 10.8 g of ag reacts with 12.6g of hno3

Carbon bonds with many nonmetals very easily. This is part of the reason why life (as we know it) is carbon based.

What order must the earth, the sun, and the moon be in to be a lunar eclipse?

How many moles of cobalt (Co) atoms are there in 6.00x10^9 (6 billion) Co atoms?

A certain radioactive element has a half-life of one hour. if you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p. m.? 0.50 grams 0.25 grams 0.125 grams 0.0 grams

Name two bases which react with dillute sulfuric acid to give zinc sulfate

What is the correct name for the compound nh4clo4?

What is the molality of a solution when 1.2 moles MgCl2 is stirred in 1000 grams of water?

How many elements are in one molecule of Methane? How many elements are in one molecule of Ammonia? How many elements are in one molecule of Vinyl Alcohol? How many elements are in one molecule of Ethylene?