Chemistry, 15.07.2019 05:30 nicollexo21
Radiometric isotope x decays to daughter isotope y with a half-life of 220,000 years. at present you have 1/4 gram of x in the rock. from the amount of daughter isotope y presently in the rock, you determine that the rock contained 16 grams of isotope x when it formed. how many half-lives have gone by? how old is the rock?
Answers: 1
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6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space
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Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent
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Chemistry, 22.06.2019 10:30
Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?
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Radiometric isotope x decays to daughter isotope y with a half-life of 220,000 years. at present you...
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