What is the maximum number of grams of PH3 that can be formed when 41.0 g of phosphorus reacts with 22.1 g of hydrogen to form PH ? (Hint: First, find the limiting reactant)
P4(8) + 6H2(g) ->4PH3(g)
a. 45g
b. 0.43 g
c. 270 g
d. 6.8g

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

What is the independent variable in this investigation? mass volume sample number substance density