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A reaction takes place inside a constant pressure calorimeter. The heat absorbed by the calorimeter is measured to be +15J. Which of the following is true?Erxn = -15Jq = wErxn = 0Hrxn = 15JErxn = 15Jqrxn = -15JHrxn = -15J
Part A- Consider the titration of 50.0mL of 0.20 M NH_3 K_b=1.8X10^-5 with 0.20 MHNO_3. Calculate the pH after addition of 50.0 mL of the titrant.
I'm working on a Lewis Structures sheet. After we have completed the structures, which i have, we need to predict the shape of the molecule in VSEPR. What is the shape of a C2H6 amd a C2H4 molecule in VSEPR?
calculated was contained in 23.80 mL of KMnO4 solution. calculate the molarity of the KMnO4 solution.
if the pressure during the reaction stays CONSTAT (put the valune can change, like in a piston balloon which of these reactions do work on the surroundings
solution of H3PO4 and you want to completely react it with KOH. How many ml of a .462 M KOH solution do you need to accomplish this? How many grams of the two products do you produce?
A solution is made by dissolving 0.679 mol of nonelectrolyte solute in 871 g of benzene. Calculate the freezing point and boiling point of the solution.
The absorbance of a chlorophyll a standard solution in ethanol (density = 0.785 g/mL) is measured in a 1.3 cm cuvette or path length. The absorbance is 0.435 and the molar absorptivity coefficient is 86,300 M-1cm-1. The molecular weight for chloro..
During the synthesis of diphenylacetylene, why is it more difficult to remove KBr for the second time
Al is added to Si to give an extrinsic semiconductor with a conductivity of 2 ( cm)^-1 How many Al atoms are added per cm^3? How many Si atoms are there for each AI atom
Draw a diagram of oseltamivir and label showing which atoms or functional groups could be involved in the binding of oseltamivir to the neuraminidase active site by
With respect to the corrosion of steel in concrete, explain the significance of the following terms: carbonation of concrete, passivity of steel, electrical resistivity of concrete, state of oxidation of iron.
What volume of H2 (at 25oC and 1.00 atm ) can be produced by reaction of 161 g Fe and 202 g of HCl? (Atomic weights: Fe = 55.85, Cl = 35.45, H = 1.008)
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