Physical Chemistry Answers

Determine the volume, in milliliters, of a 0.270 M solution of Mohr's salt ( (NH4)2Fe(SO4)2⋅6H2O ) needed to completely react with 0.0500 L of 0.270 M potassium dichromate ( K2Cr2O7 ).

2.62 x 10^3 grams=

the heat of neutralisation of lioh and hcl at 25*c is 34.868 kj/mol heat of ionisation of lioh will be

Calculate the change in entropy when 350 g of water at 5 degrees C is mixed with 500 g water at 80 degrees C , assuming that specific heat of water is 1 cal/degree.gram ?

You now have 4 mass and 4 volume measurements for aluminum and the gray plastic cylinders allowing you to have 4 points for each substance. Plot the points in the graph below. Use the same graph for both sets of data. If you don't remember which axis to plot each variable, use your Dealing with Data notes from yesterday. Don't forget that your graph must contain a title, labels, units, and a reasonable scale. Include a key findicating what one box is equal to on each axis.

CUSO4 + Zn ———> Cu + ZnSO4

how many grams of copper could be obtained by the reaction of 32 g of cuso4 with an excess of zinc?

Fe(NO3)3 (aq) + Na3PO4 (aq) ——> FePO4 + 3NaNO3 (aq)
assuming a percentage yield of 90 percent, what mass of ferric nitrate must be reacted with an excess of sodium phosphate to produce 54 g of ferric phosphate? The MWs are Fe(NO3)3 = 242 g, and FePO4 is 151 g.

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When 20 g of CaCO3 were put into 10 litre flask & heated to 800 degree Celsius, 30% of CaCO3 remained unreacted at equilibrium . Kp for decomposition of CaCO3 will be?
Ans given is 1.231. Please explain.

A solution was prepared by dissolving 2moles of methanol in 5moles of water at 25°c. If the vapour pressure of pure water is 23.8mmHg calculate the partial pressure of water over the solution and depression of vapour pressure of pure water.

10ml of the gaseous mixture of CO H2 and NH3 are completely oxidised by 8 ml O2 if the original mixture of CO H2 and NH3 contains equal volume of CO and H2 then what is the volume % of NH3 in original mixture?