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empirical and molecular formula what are both the empirical and the molecular formula for the compounds described? - an 18.63 g sample containing 6.204 g of nitrogen, 57% carbon, and hydrogen has a molar mass of 168.28 g/mol?
The reaction of 0.130 moles of a metal with an acidic aqueous solution in a calibrated calorimeter causes the temperature to increase by 49.0°C.
An industrial vat contains 2,500 liters of an acidic aqueous solution with a pH of 3.5. How many grams of NaOH need to be added to raise the pH to 4.3?
A 68-g ice cube at 0°C is placed in 680 g of water at 22°C. What is the final temperature of the mixture?
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa?
What mass of ethylene glycol must be added to 1615g water to raise the boiling point to 104.3 degrees celcius?
Suppose that a fully charged lead-acid battery contains 1.50 L of 5.00 M H_2SO_4. What will be the concentration of H_2SO_4 in the battery after 2.40 A of current is drawn from the battery for 8.00 hours?
If 5.0 g of H2 are reacted with excess CO, how many grams of CH2OH are produced, based on a yield of 86%?
How many grams of CH4 must be burned to release 554 kJ of heat based on this thermochemical equation:
Use the van der Waals parameters for chlorine to calculate approximate values of (a) the Boyle temperature of chlorine and (b) the radius of a Cl2 molecule regarded as a sphere.
Determine the volume of sulfuric acid solution needed to prepare 37.4 g of aluminum sulfate, Al2(SO4)3, by the following reaction
What pressure is needed to confine an ideal gas to 102.0 L after it has expanded from 8.0 L and 1.0 atm at constant temperature
A solution containing an unknown quantity of A plus 930 nM B gave a relative detector response (peak area of A)/(peak area of B) = 1.21. Find the concentration of A in the unknown.
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