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How much energy is required to vaporize 158g of butane (C4 H 10) at its boiling point , if its DH vap is 24.3 kJ/mol?
Draw the structure of oxaloacetate and clearly show which carbon atoms are 14C and which are 13C labeled. Draw a box around your answer.
B: A 75.0 mL colume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 27.0mL of HNO3.
a mixture of three moles of oxygen o2g and six moles of hydrogen h2g is placed in a sealed evacuated container made of
Calculate the quantity of energy produced per gram of reactant for the fusion of H-3 (atomic mass = 3.016049 amu) with H-1 (atomic mass =1.007825 amu) to form He-4
If the weight limit for a roof is 55 lbs/ft^2, how many inches of snow can be on the roof before it must be removed? Again assume that 10 inches of snow is equivalent to 1 inch of liquid water if melted. Liquid water is 62.4 pounds/cu-foot (lbs/ft..
a certain first-order reactio has a rate constant of 3.60times10-3 at 45 . how many minutes does it take for the
a steel tank containing helium is heated to 555?c. if you could look into the tank and see the gas molecules what would
Did you realize that the diffusivity of copper through aluminum is higher than diffusivity of aluminum in copper. Why do you think is this?
why the no. of electron changes by one or increases by one in
Problem- How to find the mass of copper in a brass sample in grams with the number of moles of copper in a bass sample is a) .0119 mol b) .012mol c) .0168 mol
The density of 70.4 wt% aqueous nitric acid, HNO3, is 1.41 g/ml. 1. How many grams of solution are in 1.500 L?
Question- Part a) What mass of carbon dioxide is produced from the complete combustion of 8.70Ã-10?3g of methane Part b) What mass of water is produced from the complete combustion of 8.70Ã-10?3g of methane
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