What is the chemical formula for calcium carbide

Are temperature and heat physical or chemical properties?

N2 + 3h2 2nh3 how many moles of hydrogen are needed to completely react with two moles of nitrogen?

Which combination of elements below will bond ionically and in the same ratio as lithium when it bonds to sulfur? A) carbon and oxygen B) sodium and oxygen C) calcium and nitrogen D) aluminum and chlorine

Describe what you would do to prepare 100.0g of a 3.5% solution of ammonium sulfate in water.

A gas is at a pressure of 4.30 atm. what is this pressure in kilopascals? in mm hg?

Science is a unique field of thought because it relies on to describe the world. •Observations and experim •Teachers and students •Books and writings •Scientists and statements

Hemoglobin, a protein in red blood cells, carries o2 from the lungs to the body's cells. iron (as ferrous ion, fe2+) makes up 0.33 mass % of hemoglobin. if the molar mass of hemoglobin is 6.8 Ã 104 g/mol, how many fe2 + ions are in one molecule?

What could you predict about a methane molecule that would most likely be made by using both the quantum model of the atom and John Dalton's model?

What is the molar mass of an unknown hydrocarbon whose density is measured to be 1.97 g/l at stp?

Which is an example of flow of heat through conduction