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A solution is prepared by dissolving 19.1 g ammonium sulfate in sufficient water to make100.0 mL of stock solution. A 15.00 mL sample of this stock solution is added to 55.00mL of water. Compute the concentration of ammonium ions and sulfate ions in the final solution.
NH4+
SO4 2-
Describe the effects of a catalyst on a reaction; (what is changed what is not), include a rough sketch showing the reaction profile for an uncatalyzed reaction and a catalyzed reaction
Calculate the amount (mL) needed of a 4.0 M phenylmagnesium chloride in THF solution to give 1.5 equivalents based on the amount of starting material used. Starting material needed: 0.58 mmol? mL of 4.0 M phenylmagnesium chloride in THF
the reaction of 750.0 g each of nh3 and o2 was found to produce 562 g of nonh3g 5 o2g ---gt 4 nog 6 h2oiwhat mass of
Draw the three different isomers according to the number of C atoms in their main chain.
At 298K, 125 ml of 0.60 M potassium hydroxide KOH is added to 175 ml of 0.40 M hydrochloric acid HCl. What is the final pH
Liquid benzene, C6H6, (density = 0.877 g/mL) can be used as a fuel. What is ?H in kJ for the combustion of 2.86 L of benzene producing CO2(g) and H2O. Assume that the heat of combustion of benzene is -4.18 x 103 kJ/mol.
The specific heat of liquid ethanol is 2.3 J/g-K. How much heat is required to convert 28.0 g of ethanol at 28 C to the vapor phase at 78 C
Sodium peroxide (Na2O2) is often used in self-contained breathing devices, such as those used in fire emergencies, because it reacts with exhaled CO2 to form Na2CO3 and O2.
The concentration of the final solution is .00383 M. Calculate the concentration of the original solution.
Consider the electronic transition from n = 2 to n = 4 in a hydrogen atom and select the correct statement below.
Find the of % Nickel in the coin solution: molority of Nickel is .8469 density of coin solution as 1.00g/mL
Calculate the molarity of Ag in a solution resulting from the mixing of 30 mL of a 0.0250 M AgNO3 solution and 11.51 mL of K2CrO4
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