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What us the Ph for the following: (a) [OH]-1 = 1×10^-6 (b) 4.17×10^-5 MH2(SO4). If you add 16.50ml of distilled water to a 235.0ml solution of 8.3% sodium chloride, what would be the new concentration of the solution? Please show method of calculation and formula used
Using the dumas method, you find that a sample weighing 71.6mg gives 3.84mL of nitrogen gas at 23 deg.celcius and 785 mmHg. What is the volume of nitrogen at STP?
What is the wavelength of a baseball having mass 100.0 g traveling at a speed of 160 km/hr? What is the wavelength of an electron traveling at the same speed
A solution of 0.264 M NaOH is used to neutralized 54.0 mL H3PO4 solutions. if 1.0 mL of NaOH is required to reach end point what is the molarity of H3PO4
How much faster do ammonia (NH3) molecules effuse than carbon monoxide (CO) molecules? Enter the ratio of the rates of effusion.
If an acetic acid/sodium acetate buffer solution is prepared from 100ml of 0.10M acetic acid, what volume of 0.10M sodium acetate must be added to have a pH of 4.00
For a zero order chemical reaction, the A. half life period is directly proportion to the initial concentration of the reac-tants. B. plot of products concentration with time is a straight line through the origin
Given a buret filled with .11 M acetic acid and a second buret filled with .15 sodium acetate, how many milliliters of each solution should be mixed together to produce 18.0 mL of a solution with a pH of 4.79
A 200 mL volume of 0.317 M K3PO4 is condensed to a volume of 0.0500 L, calculate the molarity (M) of K3PO4 in the new solution.
ephedrine is used as a bronchodilator and decongestant. phenobarbital is used as an anticonvulsant and sedative. what simple chemical test distinguishes these 2 medicines?
Identify which of the following reactions are acid-base reactions and which are oxidation-reduction reactions. a. For those which are redox reactions state which substance is oxidized and which is reduced. Be specific in your answers, for example ..
A 300 mL stock solution contains 0.9 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution.
Diethyl ether have a vapor pressure of 401 mmHg torr at 18 0C and its molar heat of evaporation is 26.0 kJ/mol explain what is its vapor pressure at 32.00C ( R = 8.314J/K.mol)
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