When the equation Fe + O2→Fe2O3 is balanced, the coefficient for O2 is:

a. 4

b. 3

c. 1

d. 2 D?

If the pressure of a gas is 1.50 atm, its volume is 2.50 L, and its temperature is 22, what is the volume if the pressure is increased to 3.00 atm and the temperature is increased ton35

Which of the following is a chemical property of water? boils at 100 °C Has a density of 1 gm/mL Is liquid at room temperature Reacts with pure sodium

Which of the following compounds contains the Mn+3 ion A mns B mnbr2 C mn2o3 D mno

Ions can consist of more than one atom. a. True b. False

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 true of all body except sex cells

If a man has a mass of 83 kilograms on Earth, what will the force of gravity on his body be on the moon? A. 4,880.4 N B. 135.6 N C. 813.4 N D. 318.5 N

Densities of solutions of sodium hydroxide and water at 20 °C are given by the equation: p 1.003 + 1.06Wao where p is the density of the solution in g/cm (grams of solution per cm3 of solution) and wNaOH is the weight fraction of sodium hydroxide.

What is limiting reajent?

What elements react the most? Like have the most reactivity.