Answer:
.156 M
Explanation:
diluting 25 to 100 cuts the M to 1/4 of the original
1/4 * .625 = .15625
I believe it might be c I might wrong
Answer:
1. Rubidium metal reacts very rapidly with water to form a colorless basic solution of rubidium hydroxide (RbOH) and hydrogen gas (H2).
2. Rubidium sinks because it is less dense than water. It reacts violently and immediately, with everything leaving the container. Rubidium hydroxide solution and hydrogen are formed.
The gas particles squeeze closer together
Answer: high iridium levels in a 66- million-year-old clay layer in Denmark and Italy
Explanation: