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Question: 90ml of an unknown concentrated chlorine was diluted with 2250l of water. The dilution now is 0.08mg/l. what is the initial concentration of the chlorine before dilution?
The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride produced 36.5 {rm g} of sodium upon decomposition. How much fluorine (in grams) was formed?
The equation for the combustion of acetone is: 2 C3H6O + 8 O2 ---> 6 H2O + 6 CO2 + 852.6 kcal How much heat will be given off if 0.87 mol of acetone is completely burned?
The Kb of 2,4,6-trimethylpyridine is 2.7x10-7 I've really been struggling with this stuff because i've been out of school sick, if there is any way that the steps can be shown in a more broad spectrum instead of ever little detail that would be ap..
Combustion reactions are exothermic. The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram
a 10 ml sample of a solution of pbclo32 was diluted with water to 170 ml. a 100 ml sample of the dilute solution was
How many grams of glucose are needed to prepare 400 g of 2% m/m glucose solution. 2) how many moles of cacl2 are in 250 ml of a 3 m of cacl2 solution 3) How many liters of oxygen gas form when 294 g of KClO3 completely react in the following react..
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 300mL of a solution
An open-end manometer containing mercury is connected to a container of gas. The mercury in the arm attached to the gas is 13.6cm higher than the one open to the atmosphere.
give full mechanism: show the reaction of ethyl propionate with sodium ethoxide followed by cold aqueous acid work up
Treatment of A with aqueous H2SO4 and Hg(II) gives a single ketone, C, C10H16O. Oxidation of A with KMnO4 gives CO2 and the keto carboxylic acid D shown below. Propose a structure for A.
Calculate the pH of this buffer if it is .10 M HC2H3O2 and .10 M C2H3O2-. The Ka for CH3COOH is 1.8x10^-5.
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
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