Which equation is balanced? 2Al+3F2→2AlF3 Al+3O2→Al2O3 Na+F2→2NaF Mg+2O2→2MgO

If the heat of fusion of ice is 335 j/g, how much heat is needed to melt 4.36 g of ice at 0.0 °c?

Four molecules have carbon as the central atom and hydrogen atoms around it. Which shape would give rise to a polar molecule?

An ionic bond occurs between what particles

Choose the heterogeneous mixture from the list below. choose the heterogeneous mixture from the list below. carbon (graphite) sports drink fluorine gas lasagna cola

A sample of He gas (V = 3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C in a 9.0 L flask (which was initially evacuated). What is the total pressure in the 9.

A solution is made by dissolving 8.2 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.

What is the molarity of an aqueous solution containing 40.0 g of glucose (C6H12O6) in 1.5 L of solution?

List at least 3 factors that can influence a body's temperature after death.

The mass of a 2.0 centimeter3 sample of a substance is 3.2 grams. Calculate the density of the substance. Type the correct answer in the box.

What type of wave it do the contractions of the snakes muscles make as a snake moves forward