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When a piece of gold that weighs 182 grams is added to 250 g of water at 25 degrees C, the resulting temperature of the mixture is 27.5 degrees C. If the specific heat of gold is 0.129 J/g degrees C
Calculate the heat that the water absorbed from the gold.
Determine the initial temperature of the gold
Calculate the pH at the equivalence point in titrating 0.120 solutions of each of the following with 8.0×10-2. hydrobromic acid
ammonia gas is produced by reacting hydrogen gas with nitrogen gas. to produce 856 g of ammonia gas using air as your
a normal mitochondrion in a normal cell (there are no inhibitors present). The amino acid glutamate can be converted into alpha ketoglutarate which then can enter the Citric Acid Cycle.
At 700.°C, the total pressure of the system is found to be 3.63 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
Ozone decomposes to oxygen gas. 2 O3(g) 3 O2(g) A proposed mechanism for this decomposition is shown below. O3 O2 + O (fast, equilibrium) O3 + O 2 O2 (slow) What is the rate law derived from this mechanism
Concrete used in road construction is reinforced using steel bars in a grid, known collectively as "rebar." After many years, rebar will begin to corrode, and the concrete will weaken.
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added). The Ka for HOCl is 3.0 x 10-8 M.
compute the ph for each of the given cases in the titration of 50.0 ml of 0.210 m hypochlorous acidhcloaq with 0.210 m
A 100.0 mL sample of 0.300 M NaOH is mixed with a 100.0 mL sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.00°C and the temperature of the resulting solution was recorded as 37.00°C
the concentration of copper(II) sulfate in a brand of fertilizer is 0.07% by weight. If a 21.5 g sample of this fertilizer is dissolved in 2.0L solution, what is the molar concentration of Cu2+.
John takes 3 hours longer than Andrew to peel 500 lb of apples. If together they can peel 500 lb of apples in 8 hours, then how longer would it take each one working alone?
A chemical firm was hired to monitor a nearby lake for possible mercury contamination. Several samples were taken at different locations around the lake, including water samples.
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