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a chemist makes a solution of 1.33 Mol CaCl2 and 800 kg water, and then discovers that the freezing point of the solution is significantly less than 0 c how coudl teh chemist change the solution to increase the freeazing point?
Describe the preparation of 1L solution of 0.02M Tris buffer, PH 7.8. 3. What volume of glacial acetic acid (d= 1.06g/ml) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2M acetate buffer,PH 5.0?
calculate the mass (g) of the excess reactant after thereaction is complete e. calculate the theoretical yeild (g) of 2,2dibromopropane
when 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0 yield what mass of calcium nitride
The osmotic pressure of a solution formed by dissolving 85.0 mg of aspirin (C9H8O4) in 0.250 L of water at 25 °C is __________ atm.
how much energy is required to vaporize 98.6 g of ethanol at its boiling point if its Hvap is 40.5 kj/ mol ?
Aluminum will act as the stronger reducing agent and iron will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of iron will increase.
Write a balanced chemical equation for this reaction when Ferrophosphorus reacts with pyrite making iron (ll) sulfide and a compound that is
A mixture of an amine, RNH2, and other items in CH2Cl2 was extracted with 10% HCl. The aqueous layer was discarded. The organic layer contained no amine. What went wrong?
Are these mass or mole percents? About how many pounds and pound-moles of each element is carried around in a 155 pound person
The number of grams of water required to dissolve a mixture containing 15 g of KNO3 and 3.5 g CuSO4 * 5 H2), assuming that the solubility of one substance is not affected by the presence of another
You are told to prepare a Ammonium buffer solution (0.15M, pH 8.5; 1.0L). You have HCl (0.15M); Ammonia (NH3) and Ammonium chloride (NH4Cl); solid 100g) (Kb for NH3 = 1.8 x 10-5). Please show how you are going to prepare this solution.
one synthesize 2-hydroxy-3-(m-tolyl)propanoic acid and 1-amino-3-(m-toyl)propan-2-ol? One of the intermediates should be a cyanohydrin.
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