What is the theoretical yield of hydrogen gas if 36.0 g of water undergoes electrolysis to produce molecular hydrogen and molecular oxygen and 38.0g of hydrogen is collected?
A: 2.02 g H2
B: 1.01 g H2
C: 4.04 g H2

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

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 are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.