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The rate constant for the hydrolysis of lactose to galactose and glucose at 25 degrees C is .21M^-1 s^-1. What is the final concentration of lactose after 3.4 hours if the initial concentration was 2.50M
A beaker containing 250 mL of a 0.500 M solution of acetic acid COOH) is added to 125 mL of a 0.850 M solution of sodium carbonate. The reaction that ensues produces carbon dioxide, sodium acetate COONa), and water. How many grams of carbon dioxid..
if you burn 40.7 g of hydrogen and produce 364g of water, how much oxygen reacted?
The element lithium has two naturally occurring isotopes, 7Li (isotopic mass 7.0160 amu, abundance 92.5 %) and 6Li (isotopic mass 6.0151 amu, abundance 7.50 %). Calculate the atomic mass of lithium.
The pH of the solution at the equivalence point, The pH of the solution after 40.0 mL of HCl are added.
Predict the sign of the entropy change for the following reactions and tell whether the reactions are spontaneous or nonspontaneous. a. C8H16 (g) + H2(g) ? C8H18 (g) b. C2H5OH (l) + 3O2(g)? 2CO2 (g) + 3H2O (g)
What are the possible values for the principal quantum number (n), the azimuthal quantum number (l) and the magnetic quantum number
Calculate pCd2 at each of the following points in the titration of 50.00 mL of 0.0060 M Cd2 with 0.0060 M EDTA in the presence of the auxiliary complexing agent NH3
Type the electron configuration for the following ions according to the rules in your text. Use the format {He} 2s2 2p2 for carbon. Pay attention to the spaces.
spontaneous chemical reactions produce products which are more energetically stable than the reactants which form them. A strong acid reacts with a strong base to produce water and the free ions of a salt.
what mass of solid La(IO3)3 is formed when 50 ml of 0.250 M La are mixed with 75.0 ml of 0.302 M IO3-
2.00 x10^2 mL of .500 M HCl is mixed with 2.00 x 10^2 mL of .250 M Ba(OH)2. how many moles of water are produced in the reaction
A 31.0-g sample of water at 270. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
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