7. How many grams are in 2.75 moles of dinitrogen trioxide, N2

8. How many moles are in 25.8 grams of calcium phosphate, Ca3(PO4)2?

9. Determine the mass, in grams, of 2.51 x 1024of dinitrogen trioxide, N2O3

10. How many atoms are in a sample of Ca3 mass of 82.47 grams?

11. How many liters are in 4.99 moles of oxygen?

Find the percentage composition for the following compound:
12.sulfuric acid, H2SO4

Calculate the empirical formula for the following compound:
13. 32.4%, sodium, 22.5% sulfur, and 45.15% oxygen

Find the molecular formula for the following compound:
14. The compound has an empirical formula of CH2
and its molecular mass is 70.0 g/mol.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Yeah, but what are you trying to ask?