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A solution of NH4Cl is prepared and its molarity is 1.00 x 10-3; what is the pH of this solution. Show all work.
Sulfur in the air reacting with silver flatware to produce tarnish, or silver sulfide. What is the limiting and excess reagents?
A carbon-hydrogen compound is burned in an excess of oxygen to give 1.76g of carbon dioxide and 0.900g of water as the products of combustion. What is the empirical formula of the organic compound
What is the hydroniem ion concentration in a solution resulting from mixing 193mL of .100M HCN and 22mL of .100M KOH at 25C? Ka for HCN=4.9x10-10
Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate how many liters of seawater are needed to produce 15.4 L of fresh water at 20 °C with an applied pressure of 75.0 bar.
imagine that you run a nursing home facility in your area. analyze and comment on the role public policy has in the
The rate constant for the first-order conversion of A to B is 3.33hr-1. How much time will be required for the concentration of A to reach 75% of its original value?
whats the concentration of the acetic acid solution? If 10.91 mL of an acetic acid solution required 9.78 mL of 1.0439 M NaOH
as per the ideal gas law a sample 1.075 mol of n2 in a 1.430 l container at temperature of 267.6 kelvin must exert a
For the unbalanced equation Cl2 ++ KI = I2 + KCl - how many moles of the second reactant would be require to react exactly with the 0.275 mole of the first reactant
we were given freezing point and density and were asked to find kf and in second question enthalpy and entropy values
At what temperature will a sample of nitrogen gas with a volume of 328 mL at 15°C and 748 mmHg occupy a volume of 0.898 L at a pressure of 642 mm Hg? Assume the amount of the nitrogen gas does not change.
how many grams of oxygen are collected in a reaction where 231 ml of oxygen gas is collected over water at a
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