If you start with 5 molecules of O2 in the reaction 2Mg+O2--> 2MgO, how much Mg will you need?

a.

4

c.

8

b.

5

d.

10

Describe how eukaryotic plant cells store and remove waste materials.

What number of atoms of phosphorus are present in 1.00g of each of the compounds in exercise 48?

How does the hydrosphere affects humans

Give the name and formula of the compound whose molecules consist of two sulfur atoms and four fluorine atoms.

A Scottish chemist Thomas Graham observed and experimented with gas particles in the 1800's. He formulated a mathematical equation that describes the relationship between the mass of a gas molecule and its rate of effusion. This relationship is a

In the equilibrium and concentration gizmo, you learned that you can predict the direction of a reaction by comparing the reaction quotient (qc) with the known equilibrium constant kc. you can do the same thing using partial pressures:

The molar solubility of Ag2CO3 is 0.074M at 10°C. What is the Ksp of Ag2CO3 at the same degree?

Is sodium hydroxide dissolves in water a physical change

If acid gets on your skin or clothes, wash at once with? Sulfuric Acid Soap Water Oil

Members of which group easily lose an electron to form a 1 cation? A. halogens B. alkaline earth metals C. noble gases D. alkali metals