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How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water
The next three (3) problems deal with the titration of 331 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 1.5 M KOH.
determine how many pounds a citizen would have to weigh in order to have ice melt beneath his/her ice skates. Do a bit of research and find out the area if cibtact betweeb a typical ice skating blade and the ice surface
How much heat is required to vaporize 351 g of liquid ethanol at its boiling point.
The [OH-] = 1.3 x 10^ -6 M for a 0.025 M solution of a weak base. Calculate the value of Kb for this weak base.
Karel added 45.5 mL of 1.1 M HCl to his; and Caleb added 50.0 mL of 1.0 M HCl. Two of these students will report, within experimental error, the same increase in solution temperature for the neutralization. Which are the two students? Explain.
The number of nuclei decaying in a sample of Gallium-68 decreased by a factor of 4 over a period of 136.6 minutes. What is the half life of this isotope
Determine the barometric pressure of water If a mercury (Hg)barometer reads 755 mmHg,?Express your answer in cm?
Use the graph from the Introduction that plots the density of ethanol solutions from 20 to 60 mass percent to answer the following questions:
A 0.221 g pellet of potassium hydroxide,KOH, is added to 52.2 g water in a Styrofoam coffee cup. The water temperature rises from 23.5 to 24.4 °C.
Fears of radiation exposure from normal use of such detectors are largely unfounded. Identify reasons why ^241Am smoke detectors are perfectly safe.
What is the pH after 0.150mol of HCL is added to the buffer from part A? Assume no volume change on the addition of the acid.
An airplane is pressurized to 650 {rm mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 {rm ft} altitude. If the partial pressure of oxygen drops below 100 {rm mm,Hg}, passengers become drowsy.
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