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The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.28 pounds of methane (fuel value is 11.97 kcal/g) is used to heat 128.0 kg of water at an initial temperature of 20.6 °C, what is the final temperature?
Calculate the solubility (in grams per 1.00x10^2 mL of solution) of magnesium hydroxide in a solution buffered at pH=12 and how does this compare to Mg(OH)2 in pure water (S1/S)
When an alcohol burner is used for heating, the reaction shown below occurs. If this burner is used to heat 355 mL of water from 25.0ºC to just boiling, what is the minimum amount (in grams) of ethanol (C2H5OH) that needs to be in the burner
What mass of CCl2F2 substance must evaporate in order to freeze 109 of water initially at 24 degrees celsius? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/gK .)
0.0010 mg of H, 0.0116 mg of C, and 0.0310 mg of O. It was also determined that the unknown compound had a molecular weight of 90.0 g/mol.
a small community has used an unchlorinated well water supply containing approximately 0.3 mgl of iron and manganese
For your cereal sample, you added the same volume of sodium acetate that you added to your standards and solution unknown.
A mixture consisting of 7.0g CO and 10.0g SO2, two atmospheric pollutants, has a pressure of 0.33 atm when placed in a sealed container. What is the partial pressure of the CO?
the half life of polonium-210 is 138.4 days. how many milligrams of polonium-210 remain after 415.2 days if you start
While cytotoxicity, antiviral activity, and immunosuppressant properties of didemnin-C and of its 8 analogs were excellent to very good, these compounds were, unfortunately, dropped from further studies and development at the stage of human trials..
on the second mechanism the book only mention that the reactants includes the acetonitrile but theres no naoh or acid.
What mass of each will be present in the air assuming the liquid and vapor are in equilibrium? The vapor pressures at 300 K are 3.2 kPa, 13.1 kPa, and 0.23 kPa respectively.
How much heat is evolved when 265 g of ammonia gas condenses to a liquid at its boiling point
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