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calcuate the number of moles of HCI and of NaOH present when mixing 50.0mL if 2.000 HCl with 51.0 mL if 2.00M if NaOH
A mixture of butene and butane burn in the air to give CO2 and H2O.suppose u burn 2.86g of the mixture and obtain 8.80g of CO2 and 4.14g of H2O.
Determined if CS 2 of 2.500 grams mix with an excess of chlorine gas , 9.310 Kilo joule of heat is evolved. What sort of reaction is this , Is the reaction exotermic also find out delta H for the reaction?
Which of the following has the smallest mass? a. 3.50 x 1023 molecules of I2
The contents of one 40-lb bag of topsoil can cover 10.0 square feet of ground to a depth of 1.0 in. How many bags are needed to cover a plot that measures 200.0 meters by 300.0 meters to a depth of 4.0 cm?
An insulated tank is divided into two equal parts. Both halves contain the same ideal gas but one is at 300K and 2 bar while the other one is at 1 bar.
A 1-ft-diameter cylinder is closed on one end and fitted with a moveable piston on the other. With 1 atm applied pressure, the piston is located 20 ft from the closed end
why is preferable to use tflon or ungreased stopcock rather than greased stopcock in column chromatography experiment?
A standard basketball has a volume of 7.47 L. What is the volume of the basketball in gallons? The speed limit on many United States highways is 65.0 miles per hour
Determine what is the percent yield of the reaction If 15.0 grams of Nitrogen and 2.00 grams Hydrogen react to produce 1.38 grams of Ammonia?
Suppose 50 mL of 0.020 M Hydhrochloric acid solution was mixed to 50 mL of 0.20 M acetic acid solution (Ka of acetic acid, CH3COOH, = 1.8 x 10-5). Determine the approximate pH of the mixture.
500 mL of 0.1 M NaOH is added to 585 mL of 0.25 M weak acid (Ka = 2.21 x 10^-5). What is the pH of the resulting buffer?
Describe the nature and characteristics of PCB s. Why are they of importance to an EH&S or FS professional who encounters them when.
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