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You are asked to titrate a 6.00 ml sample of vinegar using 0.25M NaOH. The mass of your vinegar sample was 6.168g, so the density was g/ml. It took 80.18ml of your NaOH to reach the endpoint of the titration. This means that you used moles of NaOH to titrate moles of acetic acid in the vinegar sample or grams of acetic acid. The percent mass of your sample of vinegar was %.
A sample of Br2(g) takes 50.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane
write the formula of the conjugate acid for each of the following bases: a)SO4^2- b)CN^- c)CH3-CH2-COO^- d)ClO2^- e)HS^-
Estimate the heat of formation of water dHf(H2O)(g) from its elements, provided the following bond energies. Write the equation.
Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
The active catalyst in this experiment was generated from the redox reaction of chloroplatinic acid with sodium borohydride. What is the active catalyst?
if 0.75 moles of cao was reacted in the above reaction and all the heat was used to heat an amount of lead from 20.5 c
What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl.
How much heat in Joules was lost by the water. How much heat would be lost by the water if 1 mole of KCl had dissolved. c) What is (Delta Heat reaction) in kL/mole for this process, which can be written as KCl (s) --> KCL (aq)
Considering the two resonance structures of the conjugate base of saccharin, which atom (N or O) bears more of the negative charge. explain why.
A sample of neon effuses from a container in 79 seconds. The same amount of an unknown noble gas requires 161 seconds.
For each titration I need to calculate the moles of base needed to neutralize the acid sample. How do I go about doing this?
Consider the graph of Gsystem versus extent of reaction (such as Q). Which of the following represents an irreversible reaction
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