126 Answered Questions for the topic College Chemistry
How many moles of O2 are needed to oxidize 6.71 moles of CuFeS2 in the reaction 2 CuFeS2 + 5 O2 ———> 2 Cu + 2 FeO + 4 SO2
How many moles of NaCl are needed if we want to make 4.37 moles of AgCl by the reaction 3Fe2O3 + 3O -> 2Fe3 + 3CO2
In the laboratory you dissolve 21.2 g of nickel(II) bromide in a volumetric flask and add water to a total volume of 375. mL. ??What is the molarity of the solu
How many milliliters of an aqueous solution of 0.167 M potassium nitrate is needed to obtain 12.0 grams of the salt?
If 0.528 mole of Al2S3 react with 3.70 mole HCl, how mant grams of H2S are formed
Phosphorus oxychloride has the chemical formula POCl3, with P as the central atom. In order to minimize formal charge, how many bonds does phosphorus make to th
Calculate the mass of KHP needed to react completely with 25 mL of a 0.10 M NaOH solution. Consider the reaction equation to be as shown below.
PLEASE HELP ME WITH CHEM TITRATION PROBLEM??!!!
Buffer/Titration Chemistry Problem??! PLEASE HELP - I AM LOST!!!
You carefully weigh out 17.00 g of CaCO3 powder and add it to 68.85 g of HCl solution. You notice bubbles as a reaction takes place. (contnd at description)
n an actual combustion expirement 88 grams of propane produced 176 grams. how many grams of co2 should have been produced theoretically
Full question is in the description
How many grams of sucrose are needed to prepare 100 mL of 5% sucrose?
CHEMISTRY PLEASE HELP!!!!!!! Calculate the concentration of a crystal violet solution prepared by diluting 4.0 mL of 1.0 x 10^-4 M crystal viole...
A volume of 253 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0
What is the boiling point of an aqueous solution that freezes at -5.5 °C?
Ammonia burns in air as follows: 4NH3(g) + 3O2(g) ? 2N2(g) + 6H2O(g)
If a wavelength is .089 nanometers, how much energy is it giving off in Joules per mole?
Perform a rxn to obtain 5 g ethyl bromide. Assuming that a normal percentage yield is 85%, what min quantity of materials needed to give desired product
to 25ml of 023 molar ammonium hydroxide solution 25 ml of 0.25 M HCl is added. What will be the ph of the resulting solution?
determine which experiences a lower effective nuclear charge.