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If 2.93*10^4 liters of water are required to dissolve 1g of calcium phosphate, and the solubility of calcium phosphate is 3.41*10^-5 g/l. what is the solubility of calcium phosphate in parts per million?
suppose you wanted to dissolve 106 g of Na2CO3 in enough H2O to make 6.00L of solution what is the molar mass of Na2CO3.
An unknown gas composed of homonuclear diatomic molecules (its structure is X2) diffuses at a rate that is 1.07 times that of O2 at the same temperature. What is the identity of the unknown gas
Salicylic Acid and Acetic Anhydride --> Acetylsalicylic Acid and Acetic Acid C7H6O3 + C4H6O3 --> C9H8O4 + C2H4O2 Salicylic Acid - 1.75g 1.6 equivalents of acetic anhydride for every equivalent of salicylic acid.
66.0 mL of a 1.60 M solution is diluted to a volume of 288 mL. A 144-mL portion of that solution is diluted using 163 mL of water. What is the final concentration.
The heat evolved when a mole of octane undergoes complete combustion is 1303 kcal. This is called the heat of combustion. How many kcal of heat wil be generated when 148 grams of octane react with 952 grams of oxygen? Show calculations.
How do you think the use of quantitative methods related to these advantages and disadvantages? 2. How do forecast practitioners rank various forecasting models applied to any given problem? Which technique is used most often in practice and why?
The decomposition of carbon disulfide, CS2 to form carbon monosulfide, CS and sulfur is first order with k = 2.8 x 10^-7 / second at 1000 degrees C. CS2 => CS + S determine how many days would be needed before a 1.00 gram sample of CS2 had decompo..
From 5g of benzopinacol you obtained benzopinacolona 75% crude. The yield after recrystallization was 2 grams. benzapinacol molecular weight = 366.46 g / mol benzopinacolone molecular weight = 348.44 g / mol determine:
What is the lewis structure and molecular shape around the carbons in CCl2CH2 as predicted by the VSEPR theory?
Determine whether or not each set of quantum numbers shown could correctly describe an electron in an atom. (Use the drop down menus to choose "POSSIBLE" or "IMPOSSIBLE" for each statement.
what volume of air is needed to burn it completely? Assume that the temperature of the burner is 195.0 Celcius, the pressure is 1.1 atmosphere, and the mole fraction of O2 in air is 0.21.
A gas occupies a volume of 458 mL at a pressure of 1.01 kPa and a temperature of 295 K. When the pressure is changed, the volume becomes 477 mL.
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