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A cobalt compound has an observed magnetic moment of 5.2 B.M. What can you deduce about the compound?
If given Cu(OH)2=CuO + ? and separately CuO + HCl= CuCl2 + ? What are the finished equations?
An experiment requires 44.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
2C2H6 + 7O2---> 4CO2 + 6H2O if the reaction produces 2.75 mol of H2O how many grams of CO2 are also produced?
What is the velocity of a singly charged benzene ion (m = 78 Da) after acceleration? e = 1.60 x 10^-19 C
calculate the heat transferred, Q when 51.0 ml of 2M NaOH solution and 50.0 ml of 2M HCl are mixed. Assume the final volume of the reaction mixture is 101.0 ml, its density is 104 g mL-1, and its heat capacity is 3.89 J g-1 deg-1
When 2.8>g of NaOH were dissolved in 53.8>g of water in a calorimeter at 24.4oC, the temperature of the solution went up to 38.6oC. Find the value of delta H for one mole of NaOH.
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 11.5g of HF and 25.0 g
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
Describe and explain four ways in which and industrial chemist could increase the yield of nitrous oxide.
An aerosol spray can with a volume of 270 ml contains 3.0 g of propane gas as propellant. what is the pressure in atms if the can is 20 degrees celsius?
If a 180mg piece of gold (density =19.32g/cm^3 ) is hammered into a sheet measuring 2.1ft x 1.0ft , what is the average thickness of the sheet in meters?
If 175 g of X reacts completely with diboron trioxide to produce 2.43 mol of B4X3, what is the identity of X?
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