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A mixture of CaCO3 and CaO weighing 0.711 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.432 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
If a few drops of water on the outside of the hot water syringe used to dispense the 5.00 mL sample into the calorimeter well for the Kcal determination fell into the well
Calculate the initial rate of a first-order reaction if the concentration of reactant is 0.63 M and the half-life is 6.9 s
How could you ascertain wheter the alcohol or the carboxylic acid furnishes the hydroxyl group that appears in the molecule of water
List factors that influence the size of ice crystals and corresponding methods to control the crystal size
If 10.0 mL of .300 M KOH are required to neautralize 30.0 mL of gastric juice (HCl), what is the molarity of the gastric juice?
Assuming that prior experiments have shown the single-step extraction removes only 71.0 % of the ethanol, what is the mass of ethanol in your original unknown?
how many moles of gas are there in a 45.0 l container at 25.0 degress celcius and 500.0 mm hg
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion, the temperature of the water is 26.55 C. How much heat is evolved per gram of fuel burned?
An unknown solution forms a white precipitate when treated with 6 M HCL. The precipitate is incompletely soluble in hot water but dissolves completely in NH3. What ion(s) are definitely present
Stepwise mehcanism for the reaction of 3-methyl-3-hexanol with HCl to form 3-chloro-3-methylhexane
Structure of a compound that when treated with NaOH and heat, will give more than one product (each product is present in significant amount)
Calculate G and S for the isothermal compression of 30.0 g of water from 1.0 atm to 100.0 atm at 25°C . Ignore the variation of V with P.
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