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What mass of KNO3 would have to be decomposed to produce 21.1 L of oxygen measured at STP? 2KNO3---> 2KNO2 +O2
What would the molecular diagram look for oxygen bonding with bromine. Which are the bonding and which are the antibonding. When we did it this in class there were 8bonding and 5 anti. using a template.
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the initial and final pressure (atm).
the freezing point of pure camphor is 178.4 degrees C, and its molal freezing-point constant, Kf, is 40.0 degrees C/m. Find the freezing-point of a solution containing 3.00 g of a compound (molar mass=125 g/mol) dissolved in 45.0 g of camphor
A solution of formic acid (HCOOH, Ka = 1.8 x 10^-4) has a pH of 2.70. Calculate the initial concentration of formic acid in this solution.
Acid rain over the Great Lakes has a pH of about 4.5. Acid rain over of the West Coast has a pH of 5.3. How many times more concentrated is the acid in rain over the Great Lakes?
photosynthesis in plants generate sugars such as glucose (C6H12O6) and oxygen from carbon dioxide and water. how many kilograms of oxygen are produced from photosynthesis of 330 kg of carbon dioxide
The osmotic pressure of 0.010M solutions of a non-voliatile electrolyte solure "a" and a non-volitale non-electrolyte solute "b" are 0.605 atm and 0.235 atm respectively
How long would it take for 1.50 of water at 100.0 to be converted completely into steam if heat were added at a constant rate of 16.0
The total volume of seawater is 1.5 x 10^21 L. Assume that seawater contains 3.1 percent of sodium chloride by mass and that its density is 1.03 g/ml. Calculate the total mass of sodium chloride in kilograms and in tons.
The pH of the solution when exactly 13mL of base has been added was 3.82. You notice that the concentration of the unknown acid was 1.0M. What are the Ka and the pKa of your unknown acid
5.00 ml of a water sample was titrated for hardness with 4.15mL of 0.0200M EDTA. Write an equation for the reaction and calculate the hardness of the water in ppm
What is the balanced education and stoichiometric reagents needed with mole calculations of 1 sodium hydroxide pellet(0.075 to 0.095 g) and 0.24 g acetophenone and 0.11 g benzaldehyde
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