According to the law of conservation of mass, three atoms of calcium can react to produce atoms of calcium. a. three
b. five
c. two
d. four

What causes most sediment to wash or fall into a river

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?