This is known as a beer’s law plot, the expression for which is a = e*c. a is the absorbance, c is the concentration, and e* is the effective molar absorptivity which is the slope of a beer’s law plot. the slope must be accurately determined because it will enable you to solve for the […]
Assuming that the specific heat of the solution is 4.18 j/(g⋅∘c) and that the calorimeter absorbs a negligible amount of heat, calculate δh in kilojoules for the reaction naoh(aq) hcl(aq)→nacl(aq) h2o(l)
How many grams of solid magnesium nitrate (148.3 g/mol) should be added to 500 ml of 0.118 m of sodium nitrate in order to produce an aqueous 0.25 m solution of nitrate ions?
Calculate the pressure exerted by 1 mol of co2 in a 1 l vessel at 300 k, assuming that that gas behaves ideally
What is the boiling point of an benzene solution that freezes at 0.05 degrees c? normal freezing point is 5.5 and the normal boiling point is 80.1 degrees c. kfp = 5.12 k/m and kbp = 2.53 k/m. enter your answer to 2 decimal places?
Suppose instead that 5.00g ca is added to 50 ml of 1.00m hcl. determine the limiting recatant in this case and the number of moles
Many experiments use gas manifolds to transfer gases from one reaction vessel to another. knowing the volume of such manifolds can be crucial. bulb a was filled with 540. ml of n2 gas. when opened to the glass manifold, the pressure was allowed to equilibrate and the new pressure (read at location p) was 295 […]
When 0.854 grams of a protein were dissolved in 88.9 ml of solution at 17.9 degrees c, the osmotic pressure was found to be 35.6 torr. calculate the molar mass of the protein?
Potassium superoxide (KO2, 71.10 g/mol) can be used to generate oxygen gas. What is the theoretical yield of O2 (32.00 g/mol) if 500.0 g KO2 reacts with excess H2O (18.02 g/mol)?
What is the balanced redox equation that results from the combination of the following half reactions
