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Define the Beer-Lambert Relationship in detail.How does this relationship allow one to quantify an unknown?(Illustrations/equations many be helpful for your explanation)
At an altitude of 45.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
A sample of nitrogen occupies a volume of 250mL at 27 degrees C and 700 mmHg of pressure. What will be its volume at STP?
Calculate the average O-F bond energy given the following average bond energies: O=O 498 kJ/mol F-F 159 kJ/mol
what is the molarity of the base? Show clearly all strps of calculation please and a generalized chemical equation
Given that a sample of air is made up of nitrogen, oxygen and argon in the mole fractions 78% N2, 21% O2 and 1.0% Ar, what is the density of air at sandard temperature and pressure?
What is the molarity of a solution of 12.0 g of NH4Br in enough H2O to make 240 mL of solution?Answer in units of M.
H2O is amphoteric meaning it can act as both a Bronsted acid and a Bronsted base.Show that H2O really is amphoteric by writing the relevant equations
An experiment shows that a 249 -mL gas sample has a mass of 0.433 g at a pressure of 750 mm Hg and a temperature of 29?. What is the molar mass of the gas?
A 75 mL solution of 0.030 M Ca(OH)2 is titrated with 0.035 M HCl. Calculate the pH of the mixture after 60 mL of HCl have been added.
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
how many liters of H2 would be formed at 530 mm Hg and 15 degrees celcius if 20.5g of zinc was allowed to react?
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