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What mass of helium gas is needed to pressurize a 120.0 L tank to 264 atm at 25°C?
Three solutions 61.0 mL of 0.2 M KNO3; 63.0 mL of 0.3 M Ca(NO3)2; and 69.0 mL of 0.385 M KCl were poured together to make one new solution.
Estimate dissociation energy of HF using simpe additivity rule If given that d(H-H) and D(F-F) IN H 2 is 336kj/mol and F2 is 258 kj/mol
2NO2 + Cl2 = 2NOCl The inital pressure of NO2 was 1.577 atm and the inital pressure of Cl2 was 0.427 atm. At equilibrium, the partial pressure of NOCl is 0.624 atm. Calculate K.
how much energy is required to vaporize 48.7 g of CH2Cl2 at its boiling point if its Hvap = 31.6 kg/mol
Write a balanced equation for the conversion of C6H5CHOHCH3 to the methyl ketone in the presence of I2 and NAOH
what is the chemical equation that describes both these reactions? Please give the chemical equations of what happens in this situation
Calculate the resulting pH if 455 mL of 0.200 M HCl is mixed with 315 mL of 0.0850 M Ca(OH)2.
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
If the barometric pressure is 784 torr and the experiment is carried out at 25 oC, what is the pressure of the gas collected?
Determine the percent by mass of calcium carbonate in the sample
A 20.0 ml sample of 0.200 M K2CO3 solution is 30.0 ml of 0.400 M Ba(NO3)2 solution. Barium Carbonate precipitates. The Concentration of barium ions, Ba^2+, in solution after reaction is?
What is the procedure for the extractions (to MAXIMIZE THE YIELD) and volumes? (i.e. How much water, NaCl, sodium bicarbonate and in what order)?
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