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Car manufacturers are developing engines that use H2 as fuel. In Iceland, Sweden, and other parts of Scandinavia, where hydroelectric plants produce inexpensive electric power, the H2 can be made industrially by the electrolysis of water.
if you want to have a water-salt solution that freezes at -10degc what mass of nacl must you add to 3.0 kg of water?
An element forms a body-centered cubic crystalline substance. the edge length of the unit cell is 287pm and the density of the crystal is 97.92 g/mL. calculate the molar mass of the substance.
solid carbon dioxide co2 dry ice goes directly from solid to gaseous state at -78degc. the molar heat of sublimation is
When glucose, C6H12O6, is oxidized in our bodies energy is produced. In addition,CO2, is produced as a gas. The carbon dioxide gas eventualy finds its way from the cells to the lungs where it is expelled from the body
Match the following physical and chemical properties with the compounds cyclohexane,C6H12 , or calcium nitrate, Ca(NO3)2. CHOICES: A: C6H12 or B: Ca(NO3)2
What is the maximum mass of water that can be released by heating a 8.904 g sample of nickel(II) sulfate heptahydrate?
At what ph would you carry out an electrophoresis experiement if you wanted to seperate a mixture of lysine
What quantity of heat is required to vaporize 151 g. of benzene C6H6 at its boiling point 80.1 degrees celsius? Heat of vaporization = + 30.8 kj/mol.
Determine all concentrations after 15 minutes. What is the chlorine concentration. What is Q after 15 minutes?
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCL, what is the limiting reagent in this reaction. you may need to calculate mmoles of sodium benzoate first.
Select all of the following that would be acceptable conjugate acid-base pairs to use in the preparation of a pH=9.8 buffer.
Two manufacturing plants need 1.0x104 kg of Al each week. One plant produces the Al from bauxite (Al2O3) and the other produces Al from recycled cans. Recovering Al via recycling consumes only 5% of the energy it takes to manufacture aluminum from..
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