What is the percent yield of lithium hydroxide from a reaction of 7.40 g of lithium with 10.2 g of water? The actual yield was measured to be 12.1 g. 2Li(s) + 2H2O(l) = 2LiOH(aq) + H2(g)
Select one:
a) 72.5%
b) 53.1%
c) 89.3%
d) 47.4%

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

How many moles of al3+ ions are in 1.25 moles of al2o3

What is the atomic number of an atom that has 6 protons