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Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. Assume that the volumes are additive.
If a sample containing 3.00 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
Propane is often used for gas grills and is typically purchased by filling a propane tank with 20 pounds of propane. What is the enthalpy change when 18 pound of propane is burned? U
Which statement best describes the attraction present in metallic bonding?
700 molecules of C14 labeled glucose are given to yeast cells that are producing alcohol. How many 14C ATP molecules can be made from this glucose?
A mixture of N2, O2, and CO2 has a total pressure of 791. torr. In this mixture the partial pressure of N2 is 115. torr and the partial pressure of O2 is 193. torr. What is the partial pressure of
The solubility of CaSO4 in pure water at 0oC is 1.20 gram(s) per liter. What is the value of the solubility product?
A compound is found to have a molar mass of 598 g/mol. If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25°C, what is the osmotic pressure of the resulting s
How much heat is released when 105 g of steam at 100 Co is cooled to ice at -15Co? the enthalpy of vaporization of water is 40.67 KJ/mol, the enthalpy of fusion for water is 6.01KJ/mol, the molar he
A certain substance has a molar enthalpy of vaporization of 31.6 kJ/mol. How much of the substance is in a sample that requires 57.0 kJ to vaporize?
a rigid tank of 0.03(cubic meters) volume contains a mixture of liquid water and water vapor at 80kPa. The mass of the mixture in the tank is 12kg. Calculate the heat added and the quality of the mi
Determine the mass of carbon dioxide produced when .85 grams of butane reacts with oxygen according to the following equation : 2C4 H10 + 13O2 ->8CO2 + 10H2O.
Calculate the average kinetic energies of the CH4 and N2 molecules at 286 K and 556 K?
At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
You have two gas tanks, one is 7.00 L and the other is 3.50L, and one of the tanks has oxygen in it and the other has acetylene.
1. Use the three-step method described in the module to predict the actual precipitates which form (if such is the case) when the following solutions are mixed:
What is the pH of 0.0005 M solution of sodium bicarbonate and water using the dominant reation alone and assuming that the amounts of carbonate ion and carbonic acid from other sources are negligibl
Joseph Priestley discovered oxygen in the eighteenth century by using heat to decompose mercury(II) oxide:
A sample of nitrogen occupies a volume of 546 mL at STP.What volume would nitrogen occupy at 177 C under a pressure of 380 torr?
A 0.50 mol/L solution of codeine has a pOH of 3.05. What is the Kb value of codeine?
If you mix 2.000 moles of SO2 and 3.000 moles of Cl2 in a one-liter flask, SO2Cl2(g) W SO2(g) + Cl2(g), and the Keq = 291, what is the final concentration of SO2Cl2? Carry your calculations to at l
What is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g HCl and aqueous phosphorus acid (H3PO3)?
A couple of drops of water were accidentally placed on the properly folded filter paper before its mass was measured. However, the CaC2O4.H20 precipitate and the filter paper were dry. How does this
Many drugs decompose in blood by a first-order process. In 8.0 hr, secobarbital sodium, a common sedative, reaches a blood level that is 18% of its maximum. What is t1/2 of the decomposition of sec
An organic compound containing only C, H, and N yields the following data. i. Complete combustion of 35.0mg of the compound produced 33.5mg Co2 and 41.1 mg of H20 ii. A 65.2mg sample of the compound