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Ammonia burns in pure oxygen and reaction produces nitrogen and water. What is the amount of Nitrogen produced from 45.0 g NH3?
Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution
On the average, it required 29.5 mL of the base to neutralize the acid in the one tablet. How many mg of Vitamin C are there in one tablet?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.704 grams of iron and 12.6 mL of 0.581M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol) o
A compound contains 43.64% P with the remainder being oxygen. What is the empirical formula of the compound?
If 1.0 mL of vinegar needs 22.5 mL of 0.195 M NaOH to reach the equivalence point in the titration, what is the molarity of the original vinegar solution?
Do you think a comparable spill of a water-insoluble liquid that has a density of 1.20 g/mL would have been as harmful to waterfowl and aquatic mammals, assuming that the toxicity of the liquid was
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
What is the theoretical yield (in grams) of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium.
What mass of NaHCO3 would be required to neutralize this acid spill through the following reaction HCO3 + H => H2O +CO2
If the syringe volume had been incorrectly read, given a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R
What mass of PbCl2 is formed from mixing 0.334 L of 0.112 molar NaCl with 2.12 L of 0.0343 molar Pb(NO3)2?
An aqueous solution of ethanol, C2H5OH, is 19.00% ethanol by mass and has a density of 0.9700 g mL-1. Calculate the molarity of the ethanol solution.
What is the literature value for the Ksp of potassium hydrogen tartrate in water at 10, 22.5, 35, 50 degrees?
At 25o C, the solubility of magnesium hydroxide Mg(OH)2 in water is 0.00429 grams per Liter. Calculate the Ksp for the compound.
A sugar-water mixture contains 45.8 g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
if 1.205g of KHP required 25.25mL of NaOH solution for complete neutralization, what is the molarity of the NaOH sodium hydroxide solution?
Consider the reaction in which 410 g of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction. how many grams of each product can be produced?
The volume of a sample of ideal gas at 25 degrees celius is 372 mL. what will be the volume of the gas if it is heated at constant pressure to 50 degrees celius? what will the volume fo the gas be i
An experiment requires 45.8 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder
Determine the solubility of N2 in water exposed to air at 25 C if the atmospheric pressure is 1.2 atm. Assume that the mole fraction of nitrogen is 0.78 in air and the Henry's law constant for nitr
A volume of 80.0 mL of a 0.520 it M rm HNO_3 solution is titrated with 0.590 it M rm KOH. Calculate the volume of rm KOH required to reach the equivalence point
A 9.775 g. gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol of oxygen. Calculate the mass percent of ethane in the o
A calibrated flask was filled to the 25 mL mark with ethyl alcohol. By weighing the flask before and after adding the ethyl alcohol, it was determined that the flask contained 19.7325 g of alcohol.