Before an experiment, you calculated that you should produce 55.7g of copper. When you measure your final product you only Made 32.6 g. What is your percent yield.

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123

What is the mass of 0.750 mole of aluminum oxide, al2o3?

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations