If 50.0 grams of water is initially at 18°C and 2.5 grams of KNO3(s) is dissolved in water, what will be the final temperature of the water? Please add steps.

Two things that biomedical has invented or innovated

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

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?