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What is the standard enthalpy of formation of sodium carbonate, given the following equation show full calculations?2Na2CO3(s) + 2260 kJ → 4Na(s) + 2C(s) + 3O2(g)
A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml. (a)find the mean volume and deviation from the mean for each and calculate the average deviation from the mean. (b) calculate the relative deviation (in %) for this set of data.
iron is obtained commercially by the reaction of hematite fe2o3 with carbon monoxide. how many grams of iron are
How many hydrogen atoms are in an unbranched alkene with one double bond and 3 Carbon atoms
What is the E°cell for the cell represented by the combination of the following half-reactions
A 9.4-g sample of powdered titanium was added to a graduated cylinder originally containing 6.8 mL of water. After addition of the titanium, the water level in the graduated cylinder was 8.9 mL. What is the density of titanium
Question- A polymer graft is incubated in a large container of plasma solution containing albumin (40 mg/ml), fibrinogen (2 mg/ml) and globulin (4.6 mg/ml). The diffusion coefficients of these protein molecules
Considering only the R-groups for the amino acids below, which one would NOT contain a nucleophile at a high pH (> 11) a. Lys b. Ser c. Cys d. Trp e. none of the preceding
Calculate the fraction of the total enzyme active sites in solution that would be in the active form at pH 7.2.
a cube of brass 2 cm on a side is heated until the temperature of the brass is 75oc. the cube is quickly added to 100
Two samples of substances composed of carbon and oxygen are analyzed. Sample 1 contains 5.00 grams of C and 13.3 grams of O.
1)What is the percent ionization of HA in 0.11 mol/L HA(aq) if HA is a weak acid with pKa=6.00. Enter your answer accurate to three significant figures.
which of the following statements about colligative properties of solutions is false?1. the higher the concentration of
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