Sodium (Na) A Homogeneous Mixture B Element C Compound D Heterogeneous Mixture

How many molecules are contained in a 6.85-g sample of dimethylmercury?

Write net ionic equation for the reaction between nitric acid and calcium hydroxide. Express your answer as a chemical equation. Identify all of the phases in your answer.

4 NH3 + 6 NO → 5 N2 + 6 H2O How many moles of NH3 are necessary to produce 0.824 mol N2?

A container of plant food recommends an appilcation rate of 630g/ha. If the container holds 15kg of plant food, how many square meters will it cover? (1 ha=10000 m^2)

Does high or low humidity create fog

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3

Is burning wood a physical change

A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)