What is the percent yield of potassium chloride if potassium reacts with excess chlorine gas to produce 10.3 grams of potassium chloride, but the theoretical yield is 12.9 grams?

a. 33.2%

b. 52.4%

c. 79.8%

d. 95.3%

Proteins are large molecules. They enter a cell through A. passive transport. B. active transport. C. diffusion. D. osmosis.

Which two categories can all substance be classified?

Which property of gasoline is a physical property odor flammability combustibility or decomposition?

Does atmospheric carbon dioxide levels fluctuate daily?

What is the maximum volume of 0.788M CaCl2 solution that can be prepared using 85.3g CaCl2

In solid KCl, which has the same solid state structure as NaCl (simple cubic unit cell), the distance between the ions is 314 pm. Calculate the length of the edge of the unit cell.

Planck's constant is approximately equal to which of the following? The product of the uncertainties in electron position and electron momentum. The sum of the uncertainties in electron position and electron momentum.

Which is the MOST accurate description about how the different types of feedback mechanisms work

Which of the following equations violates the law of conservation of mass? A) 2Al + 6HCl yields 2AlCl3 + 3H2 B) Na2C2O4 + Pb (NO3) 2 yields PbC2O4 + 2NaNO3 C) AgNO3 + LiCl yields AgCl + LiNO3 D) 3Ca + 2Cr (NO3) 3 yields 3Ca (NO3) 3 + 2Cr

Which of the following is a true statement about energy? a. energy can be created and destroyed. b. energy is never created nor destroyed. c. energy is easily created, but cannot be destroyed. d. energy cannot be converted from one form to another.