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A concentrated aqueous HClO4 solution is 70.5% by mass, and the density of the solution is 1.67 g/mL. What is the molarity (M) of the concentrated HClO4 solution?
Calcium carbonate reacts with hydrochloric acid to forma a salt, carbon dioxide and water. Write the balanced equation and determine how many grams of salt will be produced of 50g of calcium carbonate was used?
C2H4 + 3O2 = 2CO2 + 2H2O If you start with 54 grams of ethylene (C2H4) how many grams of carbon dioxide will be produced?
What mass of ethylene glycol, when mixed with 225 g H2O, will reduce the equilibrium vapor pressure of H2O from 1.00 atm to 0.800 atm at 100 °C?
A particular brand of gasoline has a density of 0.737 rm g/mL at 25 C. How many grams of this gasoline would fill a 15.1 gal tank?
A sample of hydrogen gas was collected over water at 36°C and 855 mm Hg. The volume of the container was 6.50 L. Calculate the mass of H2(g) collected. (Vapor pressure of water = 44.6 torr at 36°C)
A hot tub is filled with 470 gallons of water, which has a density of 1.0. How many kilocalories are needed to heat the water from 67 to 109?
The total volume of hydrogen needed to fill the Hindenberg was 2.0x10^8 L at 1.00 atm and 25 C. How many kilojoules of energy were evolved when it burned?
Calculate the pH at the equivalence point in titrating 0.120 M solutions of each of the following with 8.0* 10^-2 M NaOH
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg.
Compute how many ml of C2H3NaO2(0.2 M) need to be added to 200 mL of 0.1 M CH3COOH to make a buffer of pH 5 and also find out what would be the total concentration of C 2 H 3 O 2 be in this (acetate + acetic acid) solution ?
Draw the accepted mechanism for each reaction and illustrate how each stereoisomer is formed in the reaction.
A hypothetical element Z has two stable isotopes: Z-46 = 46.046 u 64.08% Z-51 = 50.826 u 35.92% What is the average atom weight of the element?
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