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Using a sample of hard water contains 121 mg of calcium carbonate per liter of H2O. suppose the reaction goes to finishing point, compute the mass of Trisodium phosphate required to remove all Ca^2+ ions from 2.50 Litres of the H2O sample?
Find the temperature and the pressure of a gas inside the cylinder - what was the initial pressure of the gas in the cylinder?
Compute How many mg of the compound P do you have in 20ml of 4% (w/v) solution of P
To find the % by mass of a compound in a given sample - Determine the percent by mass of calcium carbonate in the sample. State any assumptions.
15.0 moles of gas are in a 5.00L tank at 22.2°C. compute the difference in pressure between CH4 and an ideal gas under these circumstances. The van der Waals constants for CH4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol.
Calculate the amount of energy present in the following photons and find the region of electromagnetic spectrum for each.
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
What volume of 0.200M Hydrochloric acid must combined to 250mL of 0.300M C8H7NaO3 to produce a buffer of solution with a pH of 3.37?
Normally the alkaline earth carbonates (MCO3; M = Mg^2+, Ca^+2, Sr^+2, Ba+2) are insoluble in water. Why would the method used in this experiment work for calculating the molar mass of the alkaline earth? How would the calculations have to be cha..
Using a Sample of 0.3991 grams of an unknown monoprotic acid, HA, which combines with Sodium hydroxide according to the balanced equation HA + NaOH ® NaA + H2O when 35.30 mL of 0.1086 M Sodium hydroxide is required to titrate the acid to the equiv..
Compute how many titanium atoms are there in 24.1 grams of titanium and also determine what is the mass in grams of 3.23E+23 atoms of titanium.
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
The bond distance and dipole moment calculated for the highly reactive gas phase OH molecule are 0.98Ao and 1.78D, respectively. Compute the effective charges on the O and H atoms of the OH molecule (in units of the electronic charges).
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