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Chemistry experiment question. A clear solution is heated and forms a precipitate. When cooled it returns to clear. Exothermic or endothermic?
Consider the reaction of metallic copper with iron (III) to give copper (II) and iron (II). what is the potential of a cell with (Fe 3+) =.0001 M, Cu2+= .25M and Fe2+= .20 M at 25 degrees celcius.
Which of the following is true for a system whose equalibrium constant is relatively small? a.) it will take a short time to reach equalibrium. b.) it will take a long time to reach equalibrium.
one reason carbon monoxide co is toxic is that it binds to theprotein hemoglobin more strongly than oxygen does. the
What is a zymogen. How are they activated. Give an example. What is a transition state. And what is its relationship with the active site
Describe how the alpha and beta anomers of glucose are related to the fischer projections for these molecules
Suppose you could buy a bottle of water claiming that it contains 76 ppm oxygen. The law constant for water is k = 1.2 x 10 -3 M atm -1. What pressure would the water have to be bottled under to obtain the claimed concentration
Consider the dissolution of magnesium (s) in an aqueous hydrochloric acid solution. What minimum amount of 1.85 M hydrochloric acid is nessecary to produce 28.5 L of hydrogen at STP
Problem- How many mL of .300 M calcium hydroxide is needed to titrate 45 mL of .300 M of hyrdochloric acid to its equivalence point
calculate the ph of soultion prepared by adding20.0ml of 0.100m hcl to 80.0ml of a buffer that is comprised pf 0.25 M NH2NH2
calculate the maximum volume in mL of .15 M HCl that each of the following antacid formations would be expected to neutralize. Assume complete neutralization.
Find what is the initial concentration of the chlorine before dilution - unknown concentrated chlorine
What mass of formaldehyde gas must be released from building materials to produce a concentration of 50 ppm of the gas in a room with dimensions of 4m*5m*2m?
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