Use a graduated cylinder to add

approximately 40 mL of water to the

calorimeter. Measure the mass of the

calorimeter (no lid) and water to the

nearest 0.01 g.

According to the law of conservation of matter, which statement about chemical reactions is true? A. Atoms cannot be created or destroyed by chemical reactions. B. Every atom destroyed in a chemical reaction must be replaced. C.

Compare the mass of a proton to the mass of an electron.

Match the effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been established in this system (N. C. = no change). 2SO2 (g) + O2 (g) 2SO3 (g) + 46.

Compound A, C6H8, absorbed 3 equivalents of H2 on catalytic hydrogenation over a Pd/C catalyst to give B (C6H14). On ozonolysis, compound A gave, among other things, a ketone which was identified as acetone.

What is the molarity of the solution with respect to NaCL

Which of the following would be a result of increased solar activity? A. Longer winters B. Warmer-than-normal sea surface temperatures C. Colder-than-normal sea surface temperatures D. Shorter summers

The electron configuration of an element is 1s22s22p63s23p64s1. why is this a representative element?

Why is scientific notation important in chemistry?

During translation, the new polypeptides are often directed to specific parts of the cell by the presence or absence of short sequences of amino acids called signal sequences.

Is potassium iodide an electrolyte or nonelectrolyte?