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The question starts by stating, "A series of measurements are made in order to determine the molar mass of an unknown gas.". Then it continues:
A large gas flask is found to weigh 143.567 g. it is then filled with gas to a pressure of 735 torr at 31 C and found to weigh 1067.9 g (the density of water is 31 C is 0.997 g/mL). Assuming that the ideal gas equation applies, calculate the molar mass of the unknown.
Fully explain two disadvantages of the colorimetric method to determine the concentration of species over te classial titration method. using two chemichal reactions explain how iodate ions and ypochlorite ions both act as oxidizing agents
how many moles of glucose C6H12O6 can be burned biologically when 10.0 mole of oxygen is available
What is the molarity of a solution made by mixing 213.6 ml of 1.5 M NaCl with 328 ml of 4.3 M NaCl.
Determine the mass of carbon dioxide (in g) produced from the complete combustion of 1.40×10-2 g of C6H10 with excess oxygen.
CS2(l) + 3 O2(g) -→ CO2(g) + 2 SO2(g) . If 1.18 mol of CS2 is combined with 1.55 mol of O2, identify the limiting reactant.
What is the pH of a propanoic acid - propanoate buffer that is 0.25M in CH3CH2COONa and 0.15M with respect to CH3CH2COOH.
The burning of sufficient magnesium in oxygen to form 2.00 grams of magnesium oxide results in the liberation of 30.1 kj.
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl. how many liters of H2 would be formed at 770 mm Hg and 16 degrees celcius if 26.5g of zinc was allowed to react
CaC2(s) + 2H2O(l) = C2H2(g) + Ca(OH)2(aq) . If 34 g of CaC2 are consumed in this reaction, how much H2O is needed?
When 25mL of a 120mL stock solution containing 2M AlCl3 is diluted to 80mL, how many moles of Al3+ are in the new solution.
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
If it takes 526 J of energy to warm 7.40g of water by 17°C, how much energy would be needed to warm 7.40g of water by 55°C
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