PLEASE ANSWE

A 1-kg mass at the surface of Earth weighs 9.8 N, but the same 1-kg mass at the surface of the Moon weighs only 1.6 N. What property of Earth and the Moon is most responsible for this difference in weight?

A. The Moon is rounder than Earth.
B. The Moon has less mass than Earth.
C. The Moon is 385,000 km from Earth.
D. The Moon is larger than Earth.

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)