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A 68-g ice cube at 0°C is placed in 680 g of water at 22°C. What is the final temperature of the mixture?
If the measured gas pressure in a collection flask during a gas-forming reaction was determined to be 1.44 atm, and the atmospheric pressure that day was measured as 0.95 atm.
Methyl alcohol (CH3OH) is made by reacting carbon monoxide with H2. Starting with 2.5 g of H2 and 30 L of CO, what mass of methyl alcohol could be produced at STP? which is the limiting reactant?
A reaction vessel contains these compounds at equilibrium. What will happen if the volume of the container is reduced by 50% at constant temperature.
A solution of ethanol (C2H6O) in water is sometimes used as s disinfectant. 1.00 L of this solution contains 553 g or ethanol and 335 g of water. What is the mole fraction of ethanol in this solution.
What masses of iron(III)oxide and aluminium must be used to produce 15.0g iron? What is the maximum mass of aluminium oxide that could be produced?
How many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .)
calculate the energy (in kJ) of a photon which has a wavelength of a mircowave with a wavelength of 2.84 cm
A 739 mL gas sample at STP is compressed to a volume of 244 mL, and the temperature is increased to 24 ? C. What is the new pressure of the gas in Pa? Answer in units of Pa.
How much heat is required to vaporize 351 g of liquid ethanol at its boiling point.
How many L of N2 gas are produced at STP when the airbag inflates if the airbag contains 132g of sodium nitride?
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? kb for ammonia is 1.8*10^-5.
Carbon emits photons at 745 nm when exposed to blackbody radiation. How much energy would be obtained if 44 g of carbon were irradiated?
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