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Calculate the molarity of a solution made by dissolving 12.1 grams of Na2CrO4 in enough water to form exactly 520 mL of solution.
Ethylene Glycol in a Car Radiator, How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator containing 6.50 L of water if the coldest winter temperature in your area is -20 0C?
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
A 49 gram sample of impure potassium nitrate (KNO3) was heated to complete decomposition according to the equation 2 KNO3(s) → 2 KNO2(s) + O2(g) After the reaction was complete.
determine how do you know if there must be a precipitate or not and Show whether or not a precipitate will form if The Ksp of PbI2 =9.8×10-9
Suppose that at a particular moment during the reaction, molecular hydrogen is reacting at the rate of -0.555 M/s. (a) At what rate is ammonia being formed?
A 125g metal block at a temperature of 93.2 degrees Celsius was immersed in 100g of water at 18.3 degrees celsius. Given the specific heat of metal (s= 0.900j/g x degrees celsius)
What mass in grams of tryptophan is in 0.25 quart of milk, assuming tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L.
The reaction between ethyl iodide and hydroxide ion in ethanol (c2h5oh) solution, c2h5oh + oh --> c2h5oh + I, has an activation energy of 86.8 kj/mol and a frequency factor of 2.1 x 10^ 11
A gas cylinder containing 6.38 mol of neon has pressure of 491mmHg at 295k. If 3.22 mol helium is added at constant temp and pressure, what will be the pressure in the cylinder
the delta H OF vaporization for a new substance is 45 kj/mol and its delta H sublimation is 62 kj/mol, how much energy is needed for freezing 2.75 mol of a substance
Define the possibility of stereoisomers exists, However, the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
what would the rate constant be at a temperature of 150C for the same reaction described in Part A?
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