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when mixture A at 273 K is heated to 473 K, mixture B results. How many different chemical changes occur? How many different physical changes occur?
How many moles of Fe(NO3)3 are required to prepare a 354.6 mL solution that is 9.737 moles/liter of NO3-?
An airplane is pressurized to 650 mmHg. If air is 21% oxygen, what is the partial pressure of oxygen on the plane?
Explain What is the concentration of the HCl, A 25.00 mL sample of HCl of unknown concentration is completely neutralized with 25.00 mL
What organic product(s) is formed when 1-methylcyclopentanol is heated in the presence of an acid catalyst?
How many molecules of carbon dioxide are produced when 123 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
Hydrocarbon chemistry problems, For the compound, 1,2-dibromoethane, the most stable conformation would be
The boiling point of a solution containing 10.44 g of an unknown nonelectrolyte in 50.00 g of acetic acid is 159.2°C. What is the molar mass of the solute?
What is the molarity of that forms when 20.0 of zinc completely reacts with according to the following reaction? Assume a final volume of 285 .
A sample of sodium reacts completely with 0.568kg of chlorine, forming 936g of sodium chloride. What mass of sodium reacted.
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
A standard basketball has a volume of 7.47 L. What is the volume of the basketball in gallons? The speed limit on many United States highways is 65.0 miles per hour
Consider the reaction 4KO2(s) + 2CO2(g)->2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at STP?
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