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Problem- 32.4 mL of 0.153 M HCl(aq) will neutralize 25.0 mL of NaOH(aq) solution of unknown concentration. Calculate the concentration of the NaOH(aq) solution. Your answer should be in molL-1 (aka M). Please do not comprise units in your answer. Give your answer to two significant figures.
A solution containing .2g of an unknown substance in 2.5 g of cyclohexane is found to freeze at 5.1 C what is the molar mass of the unknown substance
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
A strain of bacteria has been isolated that can cometabolize tetrachloroethane
A 375mL sample of gas is initially at a pressure of 721 torr and a temperature of 32°C. If this gas is compressed to a volume of 286mL and the pressure increases to 901 torr, explain what will be the new temperature of the gas (reported to three s..
what pressure would be required for helium at 25C to have the same density as carbon dioxide at 25C and 1.00 atm?
What is the expected freezing point of a solution prepared by dissolving 4.25g of naphthalene (C10H8) in 26.4g of benzene (C6H6)? T-5.53C and K-5.12C
Problem- Fe (s) + Cd2 + (aq) Fe2 + (aq) + Cd (s) Calculate ?G for this reaction and calculate the K for this reaction. Explain why ?G can only be used to determine the spontaneity of a reaction. Be very detailed in your answer.
In the Balmer-Rydberg equation, what value of is used to determine the wavelengths of the Balmer series?
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
For steady flow in a heat exchanger at just about atmospheric pressure, explain what is the heat transferred. Explain when 20 mol of ammonia is heated from 100 to 800 deg. C
Write a balanced redox equation for the seperation of Cu2+ from the other Qual 1 cations. The other cations are Na+ , K+ , NH4+ , Mg2+ , and Ca2+.
Problem- According to Charles's law, for a fixed quantity of gas at constant pressure, which of the given quantities is constant. According to Charles's law, for a fixed quantity of gas at constant pressure, which of the given quantities is consta..
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