The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that

must happen at the molecular level?

The molecules move more quickly and their average kinetic energy increases.

The molecules move more slowly and their average kinetic energy decreases.

The molecules move more quickly and their average kinetic energy decreases.

The molecules move more slowly and their average kinetic energy increases.

Write a story that matches with the expression 42x-5 pls hurry

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.