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There are two stable isotopes of gallium. their masses are 68.9257 amu and 70.9249 amu. If the average atomic mass of gallium is 69.73 amu, what is the natural abundance of the lighter isotope?
Note: this question is asking for the natural abundance as a decimal, not as the percent natural abundance. in otherwords, if the natural abundance was 50%, the answer would be "0.50"
Which of the alkaline earth metal hydroxides, M(OH)2, would you expect to be most soluble in water? Least soluable?
water in order to raise the boiling point of the solution by 0.5 C? Assume the ideal van't Hoff factor for NaCl.
determining the difference between vinylic & allylic hydrogens in a Cyclohexene, how many of each, what determines it?
calculate mass of KHC8H4O4 (molar mass = 204.44 g/mol) that reacts with 15 ml of the NaOH solution
explain if you can use an integrated rate law to find the orders of each reactant in a reaction with more than one reactant
A flask that can withstand an internal pressure of 2525 torr, but no more, is filed with a gas at 21.0°C and 758 torr and heated. At what temperature will it burst?
A certain antacid contains only Al(OH)3 (FW=78.00) and Mg(OH)2 (FW=58.33). If a 0.2678 g sample of the antacid requires 10.25 mL of 0.9815 M HNO3 for neutralization, what is the % by mass of Al(OH)3 in the mixture
Calculate the E0 for the following reaction by using the standard reduction potentials data in your lab manual.
The arsenic in a 1.223 g sample of a pesticide was converted to H3AsO4 by suitable treatment. The acid was then neutralized, and 40.00 ml of 0.07891 M AgNO3 was added to precipitate the arsenic quantitatively as Ag3AsO4.
a solution contains 55 grams of ascorbic acid in 250 g of water freezes at -2.34 degrees C. calculate the molar mass of the solute
What is the complete ionic equation for the reaction of K with H2O. Identify the reducing and oxidizing agents and the oxidation
These sections had about 1000 people. There were 10 of these sections in the picture. The other 10 sections had people standing further apart. These sections contained about 500 people each. How many people would you estimate were at the event?
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