Write the symbol for element x which has 22 electrons and 22 neutrons

Determine the concentrations of K2SO4, K+, and SO42 - in a solution prepared by dissolving 2.07 * 10-4 g K2SO4 in 2.50 L of water. Express all three concentrations in molarity.

In a solid the particles are packed closely together, but they can move past each other freely. a. True b. False

This guy doesnt even know what hes talking about. the answer is wrong cause i just took a quiz on it

Which statements describe what happens in a redox reaction? Check all that apply. A. Electrons move from one substance to another. B. One atom gains electrons and one loses electrons. C. The cations on two substances trade places. D.

Walt made a study chart listing uses for two types of electromagnetic waves. Which headings best complete the chart? (A.) A: Infrared Waves B: X-rays (B.) A: Microwaves B: Ultraviolet Waves (C.) A: Ultraviolet Waves B: Gamma Rays (D.

Which of the following statements about chemical formulas is FALSE? A) The subscripts represent the relative number each type of atom in the compound. B) The subscripts represent the relative mass of each type of atom in the compound.

The lowest possible concentration of free hydrogen ions is represented by a ph value of

Diseases that are inherited are caused by

Why do many metal ions produce acidic solutions when dissolved in water?

Which property of potential energy distinguishes it from kinetic energy? a. mass b. position c. force d. work and power