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how many grams of Na2CO3 (FM 105.99) should be mixed with 5.00 g of NaHCO3 (FM 84.01) to produce 100ml of buffer with pH 10.00?
Calculate How many palladium atoms will have to be laid side by side to span a distance of 4.28 mm if The radius of a palladium atom is 137 pm.?
Calculate how many moles of sodium phosphate are needed to react completely with 4.6 mol of calcium nitrate( Ca(NO 3 ) 2 ) to form sodium nitrate (NaNO 3 ) and calcium phosphate?
Find the volume of FeSO4 solution - What volume of 0.200M FeSO 4 solution would be required to react with 20.0mL of 0.250M KMnO 4 according to the following equation?
a block of aluminum with the volume of 96.5 g absorbs 65.3 J of heat. If the initial temperature is 31.2 degrees celcius, what is the final temperature.
Determine the value of the equilibrium constant at this temperature - Ammonium Hydrosulfide NH4HS yields NH3(Ammonia) and Hydrogen sulfide
Suppose that the volume of a particular sample of Cl2 gas is 8.7 L at 895 torr and 24 degrees Celsius. How many grams of Cl2 are there in the sample.
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
A solution is made by dissolving 5.00 g of iodine in 100 mL of methanol (density = 0.791 g/mL) to form a solution. What is the mass percent solute in the solution.
If the volume of ocean water (calculated above) contains 3.7 percent sodium chloride ("salt") by mass and the density of the water is 1.41 g/mL.
Compare the volume of 1.0 g of bromine, Br2, as a solid, liquid, and gas. The density of solid bromine just below the melting point of -7°C is 3.2 g/mL, of liquid bromine at 25°C is 3.1 g/mL.
calculate how many mgs of Ca2+ are present in 12.0mL of blood and Determine the percent yield 5.04 grams of H2
Calculate the percentage of chlorine in a sodium hypochlorite powder (disinfectant for pools) if 5.0 kg of powder gives off 2.3 kg of chlorine.
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