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a) water is sprayed on the ground of an orchard when temperatures are near freezing to keep the fruit from freezing. Explain; b) How many kilojoules of energy are released if 5.0 kg of water at 15 degrees C is on the ground and cools and freezes at 0 degrees C?
For each of the following processes, decide whether it is spontaneous or non-spontaneous.
How many grams of C are combined with 2.91 x 1023 atoms of H in the compound C5H10?
If 3.00 moles of ZnS are combined with 4.00 moles of O2, how many moles of ZnO can be produced?
Calculate the mass of zinc iodide formed when you have 1.o grams of zinc metal and 1.0 grams of iodide crystals
If a solution containing 46.46 g of mercury(II) acetate is allowed to react completely with a solution containing 7.410 g of sodium sulfide, how many grams of solid precipitate will be formed?
In a gas mixture, the partial pressures are nitrogen 420 torr , oxygen 125 torr , and helium 245 torr. What is the total pressure (torr) exerted by the gas mixture?
With wet beriberi, peripheral vessels dilate and cardiac muscle looses its contractility. also, alpha-ketoglutarate is found in high concentrations. this is thought to be caused by
Determine how much time (in seconds) is needed to form 150. g Na from a sodium chloride melt by a 25 Ampere current?
The number of moles in 15.39 g of C2H6O (molar mass =46.1 g/mol) is ,You transfer a sample of gas at 17 degrees C from a volume of 4.71 L and 1.10 atm to a container at 37 degrees C.
Show your calculations and determine the half-life of Tc-99 (in hours). (b)The delivery of a sample of Tc-99 from the reactor to the nuclear medicine lab of the hospital takes 3h.
Calculate the change in pH to 0.01 pH units caused by adding 10. mL of 2.63-M NaOH is added to 440. mL of each of the following
What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?
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