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How many grams of nitrogen and oxygen are dissolved in 125g of water at 20.0C when the water is saturated with air, in which Pnitrogen(2) equals 593 torr and Poxygen(2) equals 159 torr? At 1.00 atm pressure, the solubility of pure oxygen in water is 0.00430g O(2)/100.0g H(2)O, and the solubility of pure nitrogen in water is 0.00190g N(2)/100.0g H(2)O.
If the molar mass is 88 g/mol and the percent composition is 54.5% carbon, 9.15% hydrogen and 36.3% oxygen, what is the molecular formula of dioxane?
Two Aqueous Sulfuric Acid solutions containing 20 wt % H2SO4 (SG=1.139) and 60 wt % H2SO4 (SG=1.498) are mixed to form a 4.00 M H2SO4 solution (SG=1.213). What feed rate of the 60% solution (L/h) would be required to produce
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 g of luminol to rm H_2O creating a solution with a total volume of 75.0 rm mL.
Suggest a solvent in which aniline acts as strong base. Write equation for the auto ionisation of (i) HCOOH, (ii) NH3.
How many liters of a 18.0%(m/v) glucose solution would you need to obtain 160 g of glucose
You have prepared a saturated solution of X at 20C using 27.0 g of water. How much solute can be dissolved if the temperature is increased to 30 C?
An auto bumper is coated with a layer of chromium, 0.017 cm thick. The bumper has a surface area of 3.43 x 104 cm2. The density of chromium metal is 7.19 g/cm3. How many atoms of chromium are used in the coating?
If 32mL of 7.0M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
when a 7.00g sample of kcn is diisolved in water in a calorimeter that has a total heat capacity of 5.989 kj k-1 the
A 16.1 kg piece of zinc at 68 degrees Celsius is placed in a container of water. The water has a mass of 20 kg and has a temperature of 13.6 degrees Celsius before the zinc is added. What is the final temperature of the water and zinc
A sample of propane, C3H8, contains 11.7moles of carbon atoms. How many total moles of atoms does the sample contain?
A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
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