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When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of 50.6 g of oxygen, 12.2 g of oxygen remained unreacted. What mass of carbon dioxide was produced?
What principle explains the solubility of a substance in aqueous acid or aqueous base
Calculate the pH for the titration of 20mL of .75M formic acid (HCOOH) Ka(HCOOH) = 1.8e-4, with .2M KOH. a) Before any acid is added
For a 0.13 M solution of formic acid, HCOOH, the pH = 2.40. Calculate Ka for formic acid.
A tank containing carbon dioxide at 400K and 50 bar is vented until the temperature in the tank falls to 300K. Assuming there is no heat transfer between the gas and the tank
Which concentration becomes smaller as the temperature is increased from 20 degrees celcius to 80 degrees celcius
A reaction initially contains 0.1 moles of H2(g) and I2(g) in a 1L flask. At equilibrium the final concentration of HI(g) is 0.19M. What is Kp for this reaction.
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 7.90 to 6.16? Use E notation and 3 significant figures.
How much heat is evolved when 1241 g of water condenses to a liquid at 100.°C?
A solid mixture contains MgCl2 and NaCl. When 0.5000 g of this solid is dissolved in enough water to form 1.000 L of solution, the osmotic pressure at 25°C
given that the density of elemental mercury is 13.534g/mL, how many atoms of mercury are contained in 1.500mL of element?
Find the ratio of the rms speed of He to that of Xe at 30 degrees Celsius. Find the average kinetic energy per mole of He and Xe at 30 degrees Celsius. enter your answers in scientific notation.
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
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