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To an aqueous sodium chloride solutions we add another 100 g of NaCl, and all of the added NaCl dissolves. This implies that the initial sodium chloride solution was:
Saturated
Unsaturated
Supersaturated
Cold
Crystalline
10.2 g of ice at -4.8oC is added to 164 mL of water at 50.1oC. What is the final temperature (oC) of the mixture
Calculate the percent composition of copper in the hydrate CuSO4.5H2O based on atomic weight data.
Researchers analyzing an unknown hydrocarbon with chemical formula CxHy found that 225 grams of O2(g) were required for complete combustion of 1.0 mol CxHy, to form CO2(g) and H2O(g) only.
Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
How much PV work is done if 88.0 grams of C 2H 4 ethylene and 120 grams of hydrochloric acid HCl are permitted to react at atmospheric pressure and the volume change = -70.3 Litres?
consider the expansion of 1L of gas orginally at 9 atm pressure to 1 atm pressure. the T remains constant at 25*C. Defining the gas as the system, calculate the work done on the system when
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
Diethyl ether has a boiling point of 345 degree C and 1 butanol has a boiling point of 117 degree C. Both of these compounds have the same number and types of atom. Explain the difference in their boiling points
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 300mL of a solution
A .499 mol sample of graphite was heated with 2.16 mol oxygen gas to form carbon dioxide. Graphite is the limiting reagent in this reaction. Calculate the total moles of gas present after the reaction?
The hydrogen atom can absorb light of wavelength 2626 nm. (a) In what region of the electromagnetic spectrum is this absorption found? (b) Determine the initial and final values of n associated with this absorption. initial
In the reaction of sodium benzoate with hydrochloric acid to form benzoic acid, if one started with 12.3 mmol of sodium benzoate
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