I NEED YOUR HELP GUYSSS Light can pass through different materials, including air, water, and glass. When light passes from one material to another material with a different density, its wavelength may change. However, its frequency does not change. Based on that information and the formula for the speed of a light wave, what can you say about the speed of light in materials of different densities? Explain your answer.

Once similarity and one difference between a mixture of elements and a mixture of compounds

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.

The primary products of complete combustion of fossil fuels are a. carbon dioxide and water b. methane and water c. carbon monoxide and water d. carbon dioxide and carbon monoxide