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(a) Give the names and chemical symbols for the three isotopes of hydrogen.
(b) List the isotopes in order of decreasing natural abundance.
(c)Which hydrogen isotope is radioactive?
(d)Write the nuclear equation for the radioactive decay of this isotope.
define what is the velocity of the hydrogen molecule after absorbing a photon. Explain what is the translational energy of the on mole of hydrogen molecules
the following data were collected for the reaction of tbutylbromide (CH3)3CBr) with hydroxide ion at 55 degrees Celsius: equation: (CH3)3+CBr+OH-=> (CH3)3COH+Br-1 exp
Calculate the pH during the titration of 24.8 mL of 0.793 M HBr(aq) with 0.219 M KOH(aq) after 14.1 mL of the base have been added.
Nutrition experts recommend that you drink at least 8 cups of water daily. If your local water supply contains 1.00 part floride (by mass) per million parts water, how many milligrams of floride would you consume daily in your 8 cups of water
Consider the titration of 52.0 mL of 1.2 M NaOH with 1.0 M HCl. Find the pH at all the following points. At the equivalence point.
A solution is made by dissolving 6.551 g of sodium hypochlorite, NaOCl, in 106.8 g of water. What is the concentration in parts per million
calculate the PH of a buffer solution prepared by dissolving 21.5 g benzoic acid and 37.7g sodium benzoate in 200.0 mL of solution?
calculate the standard free energy change for the following metabolically important enzyme-catalyzed reaction at 25degc
In order to raise the temperature of 266 g of methane gas from 25.0 C to 40.0 C, how much heat energy in kilojoules is required given that the specific heat of methane gas is 2.20 J/(g*C)
What is the pH of a solution that contains 0.50 M H2CO3 and 0.50 M NaHCO3? (Ka1 = 4.3 X 10-7, Ka2= 5.6 X 10-11)
The freezing temperature of ethanol is -114.0 oC, the density is 0.789 g/cm3, and Kf is 1.99oC/m. Calculate the new freezing point when 0.100 L of methanol
The subsequent kinds of molecular interactions which one would not be involved in the binding of an enzyme to a substrate. a. covalent linkage b. hydrogen bonds
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