Which property of an unsaturated solution of sodium chloride in water remains the same when more water is added to the solution?
(1) density of the solution
(2) boiling point of the solution
(3) mass of sodium chloride in the solution
(4) percent by mass of water in the solution

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

Amanda pushes a box across the room with a force of 30 n. it accelerates at 5 m/s/s. what is the mass of the box? * 6 kg 1.16 kg 30 kg 5kg