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How much heat is needed to melt 22.4g of ice at zero degrees celcius to form liquid water at zero degress celcius? (please explain how you got the answer)
The rate of disappearance of HBr in the gas phase reaction 2HBr (g) → H2 (g) + Br2 (g)
Calculate the pH of the resulting solution at each of the specified points in the titration. Initially: pH of HCl
Calculate how many atoms of potassium A three mole sample of K2S would have and Calculate the current for diffusion-controlled electrolysis
What is the new boiling point of water if you add 188 grams of magnesium chloride to 1250 g of water.
A chemist wants to prepare a solution with a freezing point of 22.0°C and has 100.00 g of glycerol on hand. What mass of water should the chemist mix with the glycerol?
What is the name of the chemical used in Sweet 'n Low? Draw the structure. Why was a temporary restriction placed on the use of this sweetener? What is the Delaney Amendment?
How many L of N2 gas are produced at STP when the airbag inflates if the airbag contains 132g of sodium nitride?
What will be the total vapor pressure (in torr) of a solution prepared by mixing equal masses of the two liquids?
A 130 mL stock solution contains 1.5 M CuF2. When 11 mL of the stock solution is diluted to 23 mL, what will the concentration of F- ions be?
Styrene, a compound substance used to make Styrofoam® cups and insulation, contains 92.3 and 7.7 by mass and has a molar mass of 104 . What's the empirical formula?
In the reaction BaCO3 + 2HNO3 -> Ba(NO3)2 +CO2 + H2O, what mass of Ba(NO3)2 can be formed by combining 55 g BaCO3 and 26 g HNO3?
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
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