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An iron bar of mass 781 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
A 335 mL can of soda pop is found to contain 41 g of sucrose. What is the molarity of the solution with respect to sucrose?
What is the molarity of a 1.304 L solution that is made from 14.80 g of NaCl?Answer in units of M.
What mass of this substance must evaporate in order to freeze 160 g of water initially at 19 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c. K}.)
A buffer that has .370 m base and .234 m of its conjugate acid contain ph of 9.09. what is the ph after .002 mol of HCL is added to .250 l of this solution.
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
An aerosol spray can with a volume of 270 ml contains 3.0 g of propane gas as propellant. what is the pressure in atms if the can is 20 degrees celsius?
Calculate the mass of ascobic acid in the whole tablet( use mass of whole tablet) c) Calculate the %error in the mass of ascobic acid in one whole tablet
How Many Grams of CaCl2 should be dissolved in 500 ml of water to make a .20 M solution of Calcium Chloride
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
Superman flies past you at a speed of 1000 miles/hr. At the moment he passes you, you throw a rock at him at a velocity of 750 meters per second
What is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of oxygen?
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