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You are given an acid with an equivalent weight of 62.5 g. What is the average molecular weight if the acid is diprotic?
a) How many grams of your acid are needed to make 150mL of a .750 N (normal) solution?
b) how many grams of you acid are needed to make .500 M (molar solution)?
If the ph of Rainfall in Upstate New York is Found to be 4.0, and if the acidity is half due to Nitric acid (HNO3) and half due the two Hydrogen Ions released by Sulfuric acid
The effective nuclear charge, Zeff, for a valence electron can be approximated using the "core charge" of the atom, that is, the total charge of the nucleus and the inner (non-valence) electrons.
How many kilojoules of heat is required to completely covert 70.0 grams of water at 66.0° C to steam at 100°C?
The half-lives of different radioisotopes are given in the table below. If the initial amount of indium-117 is 8.4 g, how much indium-117 is left in the body after 86 minutes?
A zero-order reaction has a constant rate of 2.90×10-4 M/rm s. If after 65.0 seconds the concentration has dropped to 9.00×10-2 M, what was the initial concentration.
NaCl is added to 33.4ml of 0,327M AgNO3(silver nitrate). What would be the concentration of each of the ions(ie Ag+, NO3- Na+ and Cl-) in the reaction mixture after the reaction.
A 320. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 59°C?
If you start with 3.50g of aluminum, 1.5mL of 1.4M potassium hydroxide and 25.0mL of 9M sulfuric acid (with excess water), what is the limiting reactant?
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) -> Li2CrO4(s) + 2 Ag(s)
Centuries before any experiments had been carried out, philosophers had proposed the existence of the atom. Why are the proposals of these philosophers not considered theories?
A sodium hydroxide solution is prepared by dissolving 4.0 g NaOH in 1.00 L of solution. What is the molar concentration of OH- in this solution? What are the pOH and the pH of the solution?
under certain conditions, the combustion of charcoal (C) in the presence of o2 forms carbon monoxide (CO) according to the given balance equation.
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