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If the aluminum block is initially at 25, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25.
aluminum oxide al2o3 is a widely used industrial abrasive corundum emery with its specific application depending on the
The partial charge on the phosphorus atom in the PO4(-3) ion is +2.52. What is the partial charge on each oxygen atom
What might you conclude about the structures of these 3 (X,Y,Z)compounds?
Calculate the mass/volume percent, % (m/v), for the solute in each of the following solutions. Express the answer using 2 sig figures.
Chromic acid is a diprotic acid H2CrO4 with Ka1 = 0.18 and Ka2 = 3.2 x 10-7. A solution of potassium chromate is prepared at pH 5.43. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
This race is a challenge to the human organism! By what percentage does the oxygen number density decrease between the start and the finish of the race?
The rate constant for a certain reaction is = 6.10×10?3 . If the initial reactant concentration was 0.750 , what will the concentration be after 18.0 minutes
the Ras and MAP kinase pathway starts with the binding of a growth factor to a receptor. as a result, all of the following occur EXCEPT
How many grams of C are combined with 2.91 x 1023 atoms of H in the compound C5H10?
calculate the pH of the 1 L solution of 0.25 M TRIS plus the addition of 0.05 M HCL. Show how many moles of TRIS and TRIS HCL are present after the addition of the HCL. Use the Henderson Hasselbalch equation to calculate the pH?
you are holding 2 balloons, an orange balloon and a blue balloon. the orange balloon is filled with neon gas and the blue one is filled with argon gas. The orange balloon has twice the volume of the blue ballon. What is the mass ratio of Ne:Ar in ..
A 100 liter air tank housed in a gas station ruptured suddenly and air originally at 5atm escaped to the surroundings at 1atm and 25°C. Find ?S of air, had it been let out slowly in a reversible manner
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