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What is the hydroxide-ion concentration in a solution formed by combining 200. mL of 0.15 M HCl with 300. mL of 0.091 M NaOH at 25ºC?HCl(aq) + NaOH(aq) ? NaCl(aq) + H2O(l)
A. 0.055 M
B. 1.7 10-13 M
C. 1.0 10-7 M
D. 1.9 10-12 M
E. 0.091 M
A flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 50.0 mL of 0.230 M NaOH. what volume of NaOH is needed to reach the end point of the titration
(a) How many moles of potassium ions are in 272 g alum. (b) What is the mass % S in alum (to 3 significant figures). (c) What is the maximum amount of alum (in metric tons) that can be prepared from 16.7 metric tons of scrap aluminum (1 metric ton..
Propose a synthesis of teflon (polytetraflauroethlene). What starting materials are required? What type pf reaction would be used to achieve polymerization
What final temperature, in degrees celcius, is needed to change the volume of the gas to each of the following, if n and P do not change?
A cook wants to heat 1.37 of water from 27.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn?
How much energy (heat) is required to convert 248 g of water from 0oC to 154oC? Assume that the water begins as a liquid, that the specific heat of water is 4.184 J/g.oC over the entire liquid range, that the specific heat of steam is 1.99 J/g.oC,
At a temperature of 395*C and a pressure of 705 mmHg, how many grams of NH3 can be produced when 3.80 L of NO2 react?
what is a given and how much water must be mixed with concentrated hydrochloric acid to prepare 50 cubic cm of 6 molar hydrochloric acid solution?
Hydrogen and nitrogen react to form ammonia, NH3. Calculate the mass of NH3 produced from the reaction of 14 g N2 and 1.0 g H2.
Determine how many grams of solute would separate if the quantity of the solvent is 129 grams if a saturated solution of ammonium nitrate at 75 °C is cooled to fifteen degree Celsius?
Arrange the four compounds below in order of increasing volatility.
If I add 1.65L to 112g of sodium acetate what is the molality of sodium acetate in the solution
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