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10mL of vegetable oil and 2mL of methanol react. Use a molar mass of 800g/mol for the vegetable oil and use a density of 0.88g/mL for vegetable oil and 0.79 g/mL for methanol to calculate how many moles of ethanol are used.
Determine the molarity of a saturated aqueous solution of NaI formed as 25degree celsius assuming that the added NaI does not add significantly to the volume of the water?
How many grams of dry NH4Cl need to be added to 1.80L of a 0.400M solution of ammonia, NH3 , to prepare a buffer solution that has a pH of 8.90? Kb for ammonia is 1.8*10^-5.
How many grams of camphor (C10H16O) are needed to raise the boiling point of 43.5grams of benzene by 2.10 degress Celcius? The Kb of benzene is 2.67degress Celsius/molality.
How much heat is required to vaporize 351 g of liquid ethanol at its boiling point.
calculate the new temperature in Celcius- tank of helium gas with a pressure of 270 torr at 4 degrees celcius is heated to give a pressure of 1500 torr
A gas occupies a volume of 2.45 L at a pressure of 1.03 atm. What volume will the gas occupy as the pressure changes to 0.980 atm.
What is the pH of a buffer solution if 100.0 mL of the solution is 0.15 M with respect to acetic acid and contains 1.56 g of sodium acetate, CH3COONa.
a sample of gas mixture from a neon sign contains 0.0856 mol ne and 0.0254 mol kr. what are the mass percentages of ne and kr in the gas mixture?
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
An unknown metal sample is subjected to a beam of monochromatic light with a wavelength of 322 nm. Electrons are ejected from the metal surface with a velocity of 5.20 x 105 m/s. What is the threshold frequency of the metal?
A reaction in water causes the water in beaker to cool from 25 degrees Celsius to 21 degrees Celsius. The volume of water 150ml (d=1.0g/ml). What is the heat absorbed by the reaction?
calculating theoretical yield for this experiment. It is a dehydration synthesis where one mol of hydrated salt yields 3 mol hydrates and 1 mol of anhydrous salt.
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