Describe what you would observe when potassium reacts with water

Which of the following is true about phase changes? Evaporation occurs when a solid changes into a gas. Condensation occurs when a gas changes into a liquid. Sublimation occurs when a solid changes to a liquid.

Which of the following reactions have more entropy in the products than the reactants? A. C3H8 (g) + 3O2 (g) CO2 (g) + 4H2O (l) B. 2H2O (l) 2H2 (g) + O2 (g) C. 4Ag (s) + O2 (g) 2Ag2O (s) D. S (s) + O2 (g) SO2 (g)

Which of the following types of energy does an object have because of its position? Kinetic energy Potential energy Radiant energy Sound energy

Consider the chemical equation for the production of water: 2 H2+O2>2 H2O. If 100 grams of oxygen gas are used, what would the percent yield be if 75 g of H2O was produced?

What is the mole ratio of butane to carbon dioxide?

Question 8 Review Which metal jis most easily oxidized?

If a patient requires 30g/day of some medication and it comes in 500 mg tablets, how many tablets does this patient need in one day?

Describe a chemical formula give an example

Consider the reaction between barium chloride and sodium sulphate. If 25.0 mL of 0.75 M barium chloride react, how many grams of solid are produced?

Which of the following is the correct definition of nuclear energy? energy produced from the splitting of atoms energy an object has because of its motion or position energy stored in chemical bonds of molecules energy resulting from the flow of