Calculate the final temperature
Calculate the final temperature (once the ice has melted) of a mixture made up initially of 75.0 ml liquid water at 29.0 degrees C and 7.0 g ice at 0.0 degrees C.
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Which one of the following salts, when dissolved in water, produces the solution with the highest pH. and WHY. KCl, KF, KI, KBr
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10^?2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are
A buffer was prepared by adding 2.4 g of ammonium nitrate to 100.0 mL of 0.30 M ammonia (Kb = 1.8 × 10-5). To this solution was then added 10.0 mL of 0.30 M sodium hydroxide, what is the pH change?
Determine the osmotic pressure of an aqueous solution containing 250 g of glucose (C6H12O6) in a total volume of 1.0 L solution at 0.0 C.
the molar mass is not identical, the molar mass of Br2 is only 159.80 g/mol compared to 162.35 g/mol for ICl F: ICl is polar while Br2 is nonpolar
How many liters of pure oxygen gas, measured at 45.2 oC and 104.0 kPa, are required for the complete combustion of 5.60 liters of acetaldehyde gas (C2H4O), measured under the same conditions of temperature and pressure?
One series of lines of the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shell to the fourth shell. The lines can be calculated using the Balmer-Rydberg equation
The volume of dry gaseous HBr at STP that can be obtained from the reaction of 81.6 grams of PBr3 with excess water is: PBr3(1) + 3H2O(1) ------> H3PO3(1) + 3HBr(g)
Which of the following processes are spontaneous? (Select all that apply.) A satellite falls back to earth. A kitchen gets cluttered. A house is built. A satellite is launched into orbit.
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3 A fitting composed of common brass has a total volume of 113.0cm3. How many atoms of zinc does the fitting contain?
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