For an object to remain at rest, which of the following must be true?

The forces on it are balanced

There is not friction

Gravity does not act on it

The onject has no mass

What occurs when the moon's shadow hits Earth or Earths shadow hits the moon

Which subatomic particles in a negative charge?

Write the Ka expression for an aqueous solution of hydrofluoric acid: (Note that either the numerator or denominator may contain more than one chemical species.

An experiment is conducted to see if cats preferred skim milk or 2% milk. A cup of skim milk was put out for 5 kittens and then measured how much the kittens drank over the course of a day.

Aqueous solutions of hydrochloric acid and barium hydroxide can neutralize each other to produce a compound that is soluble in water. Give the chemical formulas of the anion and cation found in this compound.

What is a polar molecule

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.