What is the percent by mass of sodium in Na2SO4? total mass of element in compound molar mass of compound Use %Element x 100

How many grams of sodium sulfate are needed to make 750.0mL of 0.215 M sodium sulfate solution?

The absolute temperature of a gas increased four times while maintaining a constant volume. What happens to the pressure of the gas?

N a neutral calcium atom, there are 20 protons, 20 neutrons, and 20 electrons. If a calcium atom loses 2 electrons, what would be the calcium's atom's charge?

A sample of water is mixed with a surfactant. V will most likely happen to the viscosity of the water? Explain your a DONE

Which statement best describes the movement of atoms in a solid? 3832 They are able to slide past each other. They spread apart as far as possible. They have no freedom to move. They are free to move in all directions.

According to the graph, which activity has used the largest amount of water over the past twenty years?

Tiffany leaves balloons filled with helium gas inside her car in on a sunny day when she returns to her car some some of the balloons are much larger and a few have popped explain what happened

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?

Which statement describes a chemical reaction? Atoms in the products are rearranged to form new substances. Atoms in the reactants are rearranged to form new substances. Atoms in the products change into new atoms to form new substances.

The gases CO₂ (g) and NH₃ (g) can be liquefied at 20°C by compressing them to sufficiently high pressures. A student claims that NH₃ (g) can be liquefied at a lower pressure than CO₂ (g) can be liquefied.