Which of the following equals one atomic mass unit? a. the mass of one electron b. the mass of one helium-4 atom c. the mass of one carbon-12 atom d. one-twelfth the mass of one carbon-12 atom

Catalysts are used in the oil industry to increase octane ratings in gasoline. Octane ratings tell how much fuel has to be compressed to promote better fuel ignition in some cars.

Rock B reacts with hydrochloric acid. State the name of the rock B

Draw the organic product of the following nucleophilic reaction

The chemistry lab is 0.3394km from the nurses office. How many feet is the distance?

What is the main reason cells are replaced in the body? A The cells are too large. B The cells are inactive. C The cells are damaged. D The cells are cancerous.

What explains the observation that FADH2 oxidation yields one less ATP than NADH oxidation by the Electron Transport System

What would you measure a cooking pot by

Is pancakes cooking on a griddle a physical or chemical change?

To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the rock and finds that it has a mass of 4.7 g. She then finds that, upon absorption of 52.

In most Acid-base reactions, what type of bond (ionic or covalent) is formed between the ions of the "salt"? What happens to the electrons in this sort of bond? Are they transferred, or shared?