Thanks! 72) You have a gas confined to a cylinder with a movable piston. What wo

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72) You have a gas confined to a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you do the following? (a) Decrease the volume to one-fourth the original volume while holding the temperature constant. (b) Reduce the temperature (in Kelvin) to half its original value while holding the volume constant. (c) Reduce the amount of gas to one-fourth while keeping the volume and the temperature constant. 73) How many moles of solute are present in each of the following solutions? e 50.0 loo b) 40.0 mL of 0.65 M glucose (C6H12O) a) 50.0 mL of 1.20 M HNO3 026 MD 40 74) Nickel (llo sulfate, used for nickel plating, is prepared by treatment of nickel (ll) carbonate with sulfuric acid: NiCO3 H2SO4 NiS (a) How many grams of H2So4 are needed to react with 29.0 g of Nico? (b) How many grams of Niso4 are obtained if the yield is 78.9%? Mole 11 37

Explanation / Answer

72. Ans- a) Ideal Gas Equation PV= nRT, A/c to boyle's law if we derease the volume to one fourth the original volume the pressure will increase fourth times.

B) Ans- if we reduce the temperature to half its original value then pressure will also decrease to half of its original value.

C) Ans- If we reduce the amount of gas one-fourth then pressure will also decrese one-fourth.

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