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The solubility of oxygen in lakes high in the Rocky Mountains is affected by the altitude. If the solubility of O2 from the air is 2.67 × 10-4 M at sea level and 25°C, what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
1. 1.75 × 10-4 M 2. 2.67 × 10-4 M 3. 3.66 × 10-5 M 4. 4.06 × 10-4 M 5. none of these
When 6.40 g of CH3OH was mixed with 10.2 g of O2 and ignited, 7.50 g of CO2 was obtained. What was the percentage yield of CO2?
How many grams of CaH2 are needed to generate 53.5 L of H2 gas if the pressure of H2 is 1 atm at 194 C.
A restriction enzyme has a recognition seuence between G and C in a palindrome. Show the products of the followling double stranded DNA upon treatment with the enzyme
We are asked to explain the pH and how to find hydrogen ion concentration - Find the pH of an acidic substance of your choice.
name the four general types of carbonyl reactions. give an example of each including a detailed mechaism. use a propyl group next to a carbonyl in each example.
Determining the limiting reactant and mass of the product - which reactant is the limiting reactant? What mass of product may be produced?
Find the pH of the equivalence point and the volume (mL) of 0.0740 M KOH needed to reach the equivalence point in the titration
A particular brand of gasoline has a density of 0.737 rm g/mL at 25 C. How many grams of this gasoline would fill a 15.1 gal tank?
4 C3H5O9N3(l) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H2O(g) If a sample containing 2.01 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
if a sample of gas is at 2 atm and is at 15 degrees celsius, what would be the new pressure in the gas if the gas is heated to 100 degrees celcius?
Write the chemical equation(s), including state symbols, for what happens when each soluble ionic compound that you identified above is placed in water. Are these substances reacting with water when they are added to water?
At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.
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