When 92.6 g K2CO3 is dissolved in 429 mL of solution, the molarity of the solution is:
0.287 M
1.56 M
1.38 M
0.670 M
6.40 M

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays