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A block of materials has dimensions by 3.2 cm by 8.6 cm by 4.1 cm. Its mass is 632 g. What is the density? Answer in units of of g/cm ^3
Octane has a density of 0.692 g/mL at 20 Celsius . How many grams of O2 are required to burn 1.30 gal of C8H18
when .65 moles of iron metal react with 40.0 mL of a 2.5 M copper (II)chloride solution to produce copper metal and iron (III) chloride. How many moles of copper will be produced?
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
Calculate the concentrations of all species in a 1.10 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
How many grams of KOH must be added to .500L of the buffer (206mL of 0.453M HCL and .500L of 0.400M sodium acetate)to change the pH(4.79) by .135 units?
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
A 17.0-g sample of ice at -19.0°C is mixed with 101.0 g of water at 87.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A 1L flask is filled with 0.25 mol N2and 0.65 mol H2 at 20 oC. These gases react to make NH3, heating up the flask to a temperature of 45 oC.
A 30.0- sample of this glucose solution was diluted to 0.500 . How many grams of glucose are in 100. of the final solution?
Determine how would you compare the escape velocity of asteroid Y as compare to the escape velocity of asteroid X?
Derive the expression for the energy of a molecule, Consider the system of a gas adsorbed onto a surface. The gas can be treated as a two-dimensional ideal gas
If the propanoate ion comes from strontium propionate, Sr(C3H5O2)2 then how many grams of strontium propanoate are needed? Assume it is completely soluble.
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