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If 145 mL of 1.10 M KCl are diluted to 515 mL, what is the molarity of the final solution?
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 3.12 moles of CO2 react completely?
The contents of one 80. lb bag of topsoil will cover 30. square feet of ground to a depth of 1.7 in. What number of bags are needed to cover a plot that measures 600. by 700. m to a depth of 1.5 cm.
suppose 7.70g of methane is mixed with 54.7g of oxygen . Calculate the maximum mass of water that could be produced by the chemical reaction
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
A 4.70 g nugget of pure gold absorbed 260 J of heat. The initial temperature was 28.0°C. What was the final temperature.
A piece of galena has a volume of 5.4 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
A 9.775 g. gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol of oxygen. Calculate the mass percent of ethane in the original mixture.
sulfur dioxide is an unwelcome result of burning soft coal in power plants. Some of the sulfur dioxide ends up as sulfuric acid ( H2SO4) in acid rain.
A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius.
f the water if brought to the vapour state at 204C and 710 KPa, where its enthalpy is 2649.4 KJ/Kg and its specific volume is 291.8 cm^3/g, what is the internal energy (U) at these conditions in KJ/Kg? c) Calculate the change in internal energy (d..
A system absorbs 192 kj of heat and the surroundings do 120 kj of work on the system. what is the change in internal energy of the system
A 3.5 L container is filled with gas at 1.00 atm. A piston then compresses the gas to 0.250 L. What is the new pressure
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