Chemistry, 20.02.2020 17:49 queenliz855
A sample of ocean sediment is found to contain 1.50 milligrams of uranium-238 and 0.460 milligrams of lead-206. Estimate the age of the sediment. The half-life for the conversion of uranium-238 to lead-206 is 4.51 x 109 years.
Answers: 3
Chemistry, 22.06.2019 08:30, ayaanwaseem
For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)
Answers: 2
Chemistry, 22.06.2019 19:00, innocentman69
How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
Answers: 1
Chemistry, 23.06.2019 00:30, clairebear66
In a ball-and-stick molecular model, what do the sticks represent?
Answers: 1
A sample of ocean sediment is found to contain 1.50 milligrams of uranium-238 and 0.460 milligrams o...
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