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(a) Calculate the morality of a solution made by dissolving 0.750 grams of Na2 SO4 in enough water to form exactly 850 mL of solution.
(b) How many moles of KMnO4 are present in 250 mL of a 0.0475 M solution?
(c) How many milliliters of 11.6 M HCl solution are needed to obtain 0.250 mol of HCl?
The half-life of Chromium-51 is 28 days. Starting with an original sample size of 12.0 ?g, calculate the number of days it will take for the radioactive isotope
How do the spacings of the energy levels of X and H compare, where X has one electron like the H atom but has different energy levels and for X: E = - (RH / n3) and RH is the same as H (2.179 ×10?18J)?
what is the composition of vapor of a pentane-hexane solution that has a vapor pressure of 373 torr at 25 degree celcius? Given is Pure Hexanes and pentanes vapor pressure at 25 degrees celcius. Pentane - 511 torr. Hexane -150 torr.
At 20 degree celcius, how many dissociated H+ ions are there in 167ml of an aqueous solution whose ph is 12.17? and At 25 degree celcius, how many dissociated H+ ion
Estimate the value of the equilibrium constant at 610K for each of the following reactions. Delta Hf and S for BrCl is 14.6 kj/mol and 240.0 J/mol*K , respectively. Br2(g)+ Cl2(g) --> 2BrCl(g)
If a bottle of nail polish remover contains 177 ml of acetone, how much heat would be released by its complete combustion? The density of acetone is .788 g/ml
Calculate the density in kg/m3 using (a) the ideal gas equation of state and (b) the compressibility factor equation of state in conjunction with the law of corresponding states.
calcium and the human body normally contains 6 quarts of blood, what mass of calcium (in grams) will be found in the total blood volume?
a quantity of water is heated from 25.0 C to 36.4 C by absorbing 325 joules. what is the mass of the water?
show states of matter and charges where appropriate. Also find molecular equation, total Ionic Equation, and Net Ionic Equation.
Why is it possible to separate the product (6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexenone) from sodium hydroxide using acetone?
What is the magnitude of the change in pH when 1.8 g of NaOH is added to 1.00 L of a solution that is 0.100 M in NH3 and 0.100 M in NH4Cl?
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