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

An average incandescent light bulb with a volume of 0.130 L contains 0.216 grams of argon gas. After the bulb had been burning for a few minutes, the temperature of the gas reached 100 °C. What was the pressure of the gas at that temperature? 1.

Vinegar contains 5.0g of acetic acid, ch3cooh, in 100.0 ml of solution what is the molarity of acetic acid in vinegar

What is the molar ratio of methionine to glycine in the samples?

What three achievements in space exploration that involved The United States

Which is the most specific classification for the element uranium?

The graph below shows how solubility changes with temperature. What is the solubility of Na2HAsO4 at 60°C? 20 g/100 mL of water 46 g/100 mL of water 65 g/100 mL of water 70 g/100 mL of water

Which statement regarding water is true? Energy must be given off in order to break down the crystal lattice of ice to a liquid. Hydrogen bonds are stronger than covalent bonds. Liquid water is less dense than solid water.

Which of the following elements has the fewest valence electrons?. a. beryllium. b. boron. c. carbon. d. lithium

How many molecules are in 4.50 moles of H2O? A. 450 molecules B. 6.02 x 1023 molecules C. 2.71 x 1024 molecules D. 3.00 molecules

A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 45.0 g of calcium fluoride