Chemistry, 07.04.2021 05:10 danielroytman1
You have 40 grams of a radioactive kind of europium. If its half-life is 5 years, how much will be left after 10 years?
Answers: 2
Chemistry, 21.06.2019 15:00
Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)
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Chemistry, 22.06.2019 08:00
Match the mixture with the substance// i really need on this guys (it’s a pic btw)
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Chemistry, 22.06.2019 15:20
An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
Answers: 1
You have 40 grams of a radioactive kind of europium. If its half-life is 5 years, how much will be l...
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