How many atoms of each element and how many atoms total

3MgO

How is triangle h fusion used to calculate the energy released when a mass of liquid freezes? A. Grams liquid x triangle h fusion B. Grams liquid x mol/g x triangle h fusion C. Grams liquid x 1/triangle h fusion D.

4 What would the volume of a gas be at - 150°C, if it had a volume of 693 mL at 45°C?

Calculate the moles of carbon dioxide that are released when 44.7 g of calcium carbonate (molar mass = 100.0 g/mol) is heated (assuming that the reaction goes to completion). give your answer to three significant figures.

True or false A revoked license can be renewed after 10 days

Agl+Fe2 (CO3) 3=Fel3+Ag2CO3

What was venter's comtributionto science?

How many atoms are in 151 g of calcium?

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects. B.

Which is an important step in the alternate method for balancing equations in redox reactions? a) indicating the types of bonds found in the molecules. b) determining the speed at which reactions take place.

How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2