Which order shows the materials having the highest to lowest temperature after 15 minutes of being under the lamps?

air, soil, sand, water
sand, air, water, soil
soil, water, air, sand
water, sand, soil, air

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion