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A biochemist studying the break down of insecticide DDT finds that it decomposes by a first-order reaction w/ a half-life of 12 years. How long does it take DDT in the soil sample to decompose from 2.40 x10^2ppbm to 10. ppbm (parts per billion by mass)
Can you show me how to solve this Question? In the following reaction, which reactact is a Bronsted-Lowry Acid?
How many kilojoules of heat are required to change 50.0 grams of ice starting at -20.0 C to 50 grams of steam at 125 C. (C is Celsius)
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 50.0 mL of HNO3. The Kb of NH3 is 1.8 × 10-5.
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g)+13O2(g) -> 8CO2(g)+ 10H2O(l)
Urea is an organic compound widely used as a fertilizer. its solubility in water allows it to be made into aqueous fertilizer solutions and applied to crops in a spray. what is the maximum number of water molecules that one urea molecule can hydrog..
Zinc metal reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2. How many grams of hydrogen gas can be obtained if 50.0 g of zinc react completely?
0.100 moles of NaOH are combined with 0.125 moles acetic acid. The mixture is taken to a final volume of 100.0 ml. What is the expected pH of the solution. Ka = 1.76 x 10^-5
So we did a preparation of t-pentyl Chloride experiment in class the other day using t-pentyl alcohol, HCL, Aqueous sodium Bicarbonate, and calcium chloride as the drying agent.
consider the reactionc2h5oh l 3o2 g --gt 2 co2 g 3 h2o l ?h -1.37 x 103 kjwhen a 24.8-g sample of ethyl alcohol
Is the pH of 100 mL of an aqueous solution containing substantial and approximately equal con- centrations of sodium hydrogensulfite and sodium sulfite closest to a pH of 2, 3, 4, 5, 6, 7, 8, 9, 10, none of these, or cannot be determined
Arrange each set of atoms in order of decreasing ionization energy (IE1) and decreasing atomic radius: Cl, K, S, Ca i will rate this after looking through every response
Aliphatic esters have carbonyl stretches that absorb around 1750 - 1735 cm-1. Unstrained aliphatic ketones have carbonyl stretches that absorb around 1715 cm-1. Explain this observation.
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