Which describes the use of a renewable energy source?

burning natural gas to power city buses

using solar cells to heat water for use in homes

burning coal to operate the machinery in a factory

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state?

What is the empirical formula of C6H18O3?

use the collision-reaction theory and a diagram, to explain why increasing the concentration of a dissolved reactant will increase the rate of reaction

If the patient has to be administered a dosage of 2 tablets every 8 hours for 7 days, what is the number of tablets required for the prescribed dosage

A diatomic molecule shares three pairs of electrons. What type of bond is present in the molecule?

What does LeChatelier's principal mean

How many milliliters of a 0.7% stock solution are required to make 2 l of 0.2% solution? how many ml of solvent will be required to carry out the dilution?

What percentage of the naphthalene molecules emitted a photon?

In an endothermic reaction, heat is absorbed from the surroundings. How does this affect entropy? A. The particles in the surroundings move slower and have decreased entropy. B.

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