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Compute the molarity of a 35% solution by weight 35 g HCl / 100 g of solution. At this concentration the solution has a density of 1.17 g/mL.
3M hydrochloric acid and 3cm strip of magnesium ribbon. 3cm strip of magnesium ribbon and 2mL of 0.10 M silver nitrate
The reaction takes place in a bomb calorimeter where 4.50g of glucose are burned. What is the heat capacity of the bomb if the temp. of the water in the bomb increases from 22.75 degrees Celsius to 25.32 degrees Celsius? I used qrxn = -Ccal*change..
It takes 47.0 to raise the temperature of an 10.6 piece of unknown metal from 13.0 to 24.7. What is the specific heat for the metal?
Compute an estimate of how long it would take for a gaseous air1borne cold virus of molar mass 100 kg mol-1 to travel the distance between two conversing people 1.0 m apart by diffusion in still, 25 °C air at 1.0 atm.
How do you figure out how to make a solution of 50mL of 3.6M hydrogen peroxide (H2O2) from 30% hydrogen peroxide
treatment of 1.385 g of an unknown metal m with an excess of aqueous hcl evolved a gas that was found to have a volume
Calculate the mass of CuSO4*H2O needed to prepare 3.0 g of [Cu(NH3)4]SO4*H2O, assuming a 90% yield.
Find the activity(not the activity coefficient) of the (C3H7)4N+ (tetrapropylammonium) ion in a solution containing 0.005 M (C3H7)4N+Br- plus 0.005 M (CH3)4N+Cl-. The ionic strength will be affected by mixing
what would be the effect on your calculated mass percent recovery of Cu if you did not completely react the Mg in the reaction mixture? Briefly explain.
The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is canceled by the symmetric tetrahedral shape. When other atoms substitute for some of the Cl atoms
What are the two pKa values for carbonic acid? What is the pH of a 0.100M solution of potassium bicarbonate. What is the pH of a 0.100M solution of potassium carbonate
An open vessel containing (a) water, (b) benzene, (c) mercury stands in a laboratory measuring 6.0 m x 5.3 m x 3.2 m at 25 deg celsius. What mass of each substance will be found in the air if there is no ventilation
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