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Which compound has the smallest molar mass?Choose one answer.a. H20 b. H202 c. CO2 d. CO
The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution.
Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75.
A particular calorimeter is calibrated and is found to have a calorimeter constant, Ccal = 3.640 kJ/°C. When 1.500 g of an unknown hydrocarbon was combusted in the calorimeter
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
the reaction was found to be first order both with rspect to NO and O3 (expressing concentrations as molarity) What are the units of the rate constant K for this reaction?
if 2.3g of sodium reacted with 1.3g of water,what would be the total mass of sodium hydroxide and hydrogen produce?
If 30.00 mL of 0.500 M KOH are needed to neutralize 10.00 mL of HCl of unkown concentration, what is the molarity of the HCl
Match each item in Column A with the corresponding item in Column B regarding the processes of nitrification and denitrification: Column A Column B a. NH4+ i. Electron acceptor for denitrification
In 2C4H10+13O2->8CO2+10H20 how many moles of O2 are required to react completely with 4.4 Moles of C4H20?
A 158-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
determine the empirical formula of a substance (Vanillin) that contains 63.15% carbon, 5.30% Hydrogen, and 31.55% oxygen.
How long will it take 10.0 mL of oxygen gas to effuse through a porous barrier if it has been observed that 81.7 minutes are required for 10.0 mL of Cl2 gas to effuse through the same barrier?
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