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How much ice (in grams) would have to melt to lower the temperature of 352 of water from 26 to 5? (Assume the density of water is 1.0)
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland
The reversible chemical reaction has the following equilibrium constant: Kc=[C][D]/[A][B]=7.0 Initially, only A and B are present, each at 2.00 M .
Suppose a 5.00mL sample of vinegar required 27.58mL of 0.123 M sodium hydroxide to reach the endpoint. What is the molarity of acetic acid in the vinegar?
How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water
Calculate the change in entropy when 5.0g of water at 75.2 degrees Celsius is converted to ice at -5.5 degrees Celsius. During the process the pressure remains constant at 1.00 atm.
Consider a solution that contains 72.0% R isomer and 28.0% S isomer. If the observed specific rotation of the mixture is -41.0°, what is the specific rotation of the pure R isomer
Calculate the quantity, in grams, of formic acid and sodium formate necessary to make 500. mL of a buffer that has a formic acid concentration of 0.75 M and a sodium formate concentration of 0.75 M.
Write balanced net equations for the redox reactions that could occur when the following are mixed a) Ag1+ and Cu b) Cr2O7 2- and Pb c)Which of the two reactions in are extensive? Is it A, B, A and B, or Neither
capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid and 0.5 M of sodium acetate
what concentration of aqueous nacl solution freezes at -15.2 c? the freezing point of pure water is 0.0 c and kf of
A. Epinephrine, C9H13NO3, has a concentration of 10-10 M in circulating blood. Calculate the diameter of a round swimming pool with a water depth of 2.0 M that would be needed to dissolve 1.0 g (about a teaspoon) of epinephrine.
The enthalpy change for the reaction of 50.0ml of ethylene with 50.0ml of H2 at 1.5atm pressure (problem ^H= 0.31kj. What is the value of ^E
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