Converting grams to kilojoules.

Burning 2.00g of propane, C3H8, produces 99.78 kJ of energy. How much energy is produced when one mole of the propane burns?

Determining the empirical formula of a compound.

Determine the empirical formula of the compound that is 40.05% sulfur and 59.95% oxygen by mass.

Spontaneous reaction question in regards to dispersal of matter.

Considering the Reaction: 2H2O(l) → 2H2(g) + O2 (g) This reaction has a dispersal of matter since a liquid produces two gases, yet the reaction is not spontaneous. Why is this so?

Determining the factors in freezing temperatures.

Are the freezing temperatures of 1.00M solutions of NaCl in water and FeCl3 in water the same or different? Why or why not?

Determining what monomer when undergoing addition polymerization will produce the given polymer.

What monomer when addition polymerized will produce the following polymer? Please see the attachment below.

Determining the amount of heat required to raise the temperature of a substance.

Liquid methanol has a heat capacity of 81.6 J/(K mol). How much heat is required to raise the temperature of 20.0 g of liquid methanol from 25 C to 40.0 C?

Predicting soluability reactions

Attached you will find a table listing the chemicals I will be mixing in lab next week. I would like to know the reactions between the solutions. Once I have these reactions in a table, I will be able to mix unknown solutions, and identify the unknowns based on the table I will have in advance. I will only pay for a response tha ...continues

Mass and mole stoichiometry question at STP.

The purity of a 0.248 gram sample containing Zn is determined by measuring the amount of hydrogen gas formed when the sample reacts with hydrochloric acid. The sample is found to be 91.7% Zn. What volume of hydrogen gas in liters was collected at STP?

Writing the names of chemical compounds.

What is the chemical name of NH Br ?      4

Equilibrium Constants

-Determine the Value for the equilibrium constant if there are present at equilibium 5.0mol of Nitrogen, 7.0 mol Oxygen, and 0.10 mol NO2 in a 1.5 L vessel. N2 + O2 --> 2NO2 -Determine the value for the equilibrium constant for the reaction A+ B --> 2C, if 1.0 mol A, 1.4 mol B, and 0.50 mol C are places in a 1.0 L vessel ...continues