The nucleus is the part of the atom a. contains most of the atom's total mass b. consists mostly of empty space c. has a negative charge d. occupies most of the atom's total volume

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.