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What other elements have electron configurations similar to hydrogen?
In order to raise the temperature of 266 g of methane gas from 25.0 C to 40.0 C, how much heat energy in kilojoules is required given that the specific heat of methane gas is 2.20 J/(g*C)
A 25.0 g sample of pure iron at 85.0°C is dropped into 75 g of water at 40.0°C. What is the final temperature of water-iron mixture?
Calculate the heat released when 2.58 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
If 3.35 g of Cu(NO3)2 are obtained from allowing 2.25 g of Cu to react with excess HNO3, Explain what is the percent yield of the reaction
Write a balanced chemical equation for the reaction of gaseous nitrogen dioxide with hydrogen gas to form gaseous ammonia and liquid water
a solution is prepared by adding 40.3 g of Mg(NO3)2 to 127 g of water. Calculate the mole fraction and molality of magnesium nitrate in this solution
Petroleum is a fossil fuel containing many different carbon compounds. If the carbon atoms in petroleum have been in the ground for 325 million years
For the first-order reaction below, the initial concentration of A is 0.240 M. If the concentration of A decreases to 0.0800 M after 21.8 hours, what is the half-life of the reaction
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
In the reaction 2A -> X + Y, the initial concentrations are all 0.600 M. If the equilibrium constant is 1.20 x 10^6, what are the equilibrium concentrations
If a wavelength is chosen at which the Cr(H2O)3+ absorbs and the CrEDTA- does not absorb, would you need to boil the solutions
Construct the molecular diagram for the system of a delocalized 1,3,5,7-cyclooctatetraene. What does this predict about this system. Is there a more stable arrangement for the bonds
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