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15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
A. 2.6 × 10-3 MB. 1.7 × 10-4 MC. 4.3 × 10-1 MD. 5.1 × 10-2 ME. none of these
The melting point of sodium is 98 degrees celcius. How much heat is absorbed by sodium when 800 grams os solid sodium metal become liquid at 98 degrees celcius?
1.00 mol of phosphorus reacted with excess fluorine: P4 + 6F2 -> 4PF3 Calculate the number of moles of PF3 produced, assuming the reaction went to completion
Find the volume of a molar solution and What volume of a 2.00 molar solution of sulfuric acid, H 2 SO 4 , is required to react with 250.0g of magnesium carbonate, MgCO 3 , according to the following equation?
An automobile gasoline tank holds 36 kg of gasoline. When the gasoline burns, 95 kg of oxygen is consumed, and carbon dioxide and water are produced.
Which one of the following is the highest temperature?
what effect does changing from room temperature to 37 have on the activity of the enzyme? 5 what does copper II sulfate to do the enzyme
what effect does increasing the temperature have on equilibrium? what effect does adding a catalyst have on equilibrium?
Produce MnO2 (s) and Oxygen gas. Balance the equation for the oxidation of hydroperoxide ion to O2 (g) by permanganate ion in a basic solution.
C2H4 + 3O2 = 2CO2 + 2H2O If you start with 54 grams of ethylene (C2H4) how many grams of carbon dioxide will be produced?
The volume of an ideal gas in a container is 2.0L. What will the volume of the gas be if the pressure on the container is doubled while the temperature is reduced from 400k to 200k?
What is the product of the reaction of 2-methycyclohexanol under acidic conditions? The answer is not 2-methylcyclohexene.
What mass of hydrogen can be produced from 2.90 g of aluminum and 14.0 g of HCl in the above unbalanced reaction?
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