Identify the molar mass of each of the following.

Cr:

Ch4:

Al2 (SO4) 3:

Br2:

Convert: 20.9 mL = ___L 2.09 0.209 0.0209 209 20.9

How does the potential energy of the reactants compare to the potential energy of the products in an exothermic reaction, and where does the energy that is given off come from?

Which of the following statements is true? U-235 is an isotope of uranium. Hydrogen atoms are heavier than uranium atoms. Fusion reactions require extremely low temperatures. Chemical energy is the energy inside the nucleus of an atom.

If the half life of uranium 232 is 68.9 how much of a 150 gram sample is present after 250 years

125mm hg into atmosphere

The molecular formula HOH is an example of an

Which choice is an example of an endothermic process? . conversion of steam to ice . conversion of steam to water . conversion of water to ice . conversion of ice to steam

Cobalt chloride hexahydrate has a formula weight of 237.9 g/mol. how much would you use to make 0.5 liter of a 0.3 m solution?

Describe what happens when you take a antacid

According to Table F, which compound is soluble in water? (1) barium phosphate (3) silver iodide (2) calcium sulfate (4) sodium perchlorate