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Problem- Magnesium-22 is unstable and undergoes radioactive decay. Is it more likely to decay via beta decay or positron emission?
Answer all three questions as well as provide required steps
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
What mass of sucrose (C12H22O11) should be combined with 494 g of water to make a solution with an osmotic pressure of 9.00 atm at 320 K?
Problem- A certain protein made of a single polypeptide chain contains 158 amino acids. Which of the following pieces of mRNA would be the smallest piece that could code for this polypeptide
Nitrogen dioxide and water react to produce nitric acid HNO3, and nitrogen oxide: 3NO2(g) + H2O(l) -------- 2HNO3(aq) + NO(g)
without special correlation. What is the range width of the actual number of people present at the Station at any given moment? (For concreteness, assume the fluctuations do not exceed one sigma)
suppose that 0.90 grams of water condenses on a 75.0 grams of block of iron that is initially at 20 degrees celcius.
The biologist estimates she will need 5100 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres.
Calculating the Heat of Reaction from Heats of formation Use the following information to find ^Hf of methanol [CH3OH(l)]. CH3OH(l) + 3/2 O2(g) CO2(g) + 2 H2O(g) (heat)H°
The side rection most often encountered in diels-alder syntheses is dimerization, in which the diene also acts as a dienophile. For example, butadiene can react with itself to yield 4-vinylcyclohexene . Draw the structures of four possible Diels-a..
2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) Heating a 1.7184-g sample of impure NaHCO3 gives 0.196 g of CO2. What was the mass percent of NaHCO3 in the original 1.7184-g sample?
What would the pH at the half-equivalence point be for the first ionization of the triprotic acid phosphoric
two 1.00g masses are attached by a spring with force constant k 500 kg s-2. calculate the zero point energy of the
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