8 A solution of hydrochloric acid had a hydrogen ion concentration of 1.0 mol/dm3
Water was added to the hydrochloric acid until the pH increased by 1
What was the hydrogen ion concentration of the hydrochloric acid after water had
been added?

Tick (V) one box.
100 mol/dm3
10 mol/dm3
0.10 mol/dm3
0.010 mol/dm3​

Which diagram represents the phase tha occurs after a solid melts?

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .