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Mineral pyrolusite MnO2, Manganese Oxide is a compound of manganese-55 and oxygen-16. determine the empirical formula of pyrolusite If 63% of the mass of pyrolusite is due to manganese,?
if potassium bromide of 25.5 grams is dissolved in enough H2O to make 1750 mL of solution, determine the molarity of the solution?
What is the final concentration of Na+ after adding 230 ml of water to a stock solution of 2.5M 420.0 ml Trisodium phosphate?
How many mL Hydrochloric acid of 0.1 M must be added to 100 mL of a 0.2 M solution of tris base to form a buffer ( pH 7.8)?
Determine how many pills does the female require to take each time she wants the dosage of 375miliigrams?
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
Determine the volume of 0.375 mol of C4H10 gas under the same temperature and pressure conditions?
Radiation with a 58.4 nm of wavelength interacts with a H 2 (hydrogen atom)and induces the ejection of an electron then determine the kinetic energy of the departing electron express your answer in eV?
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
Compute the atomic mass of 109Ag if natural abundance of 107Ag is 51.87% & atomic mass =106.905 amu and determine the probability of particle would be located in the range
calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
Determine the theatrical yield if 1.56 grams of hydrogen is permitted to combines with 9.70 grams of nitrogen producing 1.43 grams of ammonia?
Using the information below, calculate the mass of benzene in each phase and find the total mass of benzene at the site.
An unknown metal X with a mass of 28 grams absorbs 58 J of heat. calculate the heat capacity if Its temperature raises from 31.1 °C to 39.9 °C.
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