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Natali5045456 [20]
3 years ago
15

How long will it take for a 40.0 gram sample of I-131 (half-life = 8.040 days) to decay to 1/100 its original mass? ( PLEASE WIT

H DETAILS)
Chemistry
1 answer:
masya89 [10]3 years ago
4 0
Idk how long will it
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How many moles are in 2.1 x 10^{24} molecules SiO4
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Answer: 3.5 moles

Explanation:

Based on Avogadro's law:

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To get the value of Z, cross multiply:

(2.1 x 10^{24} molecules x 1mole) = (6.02 x 10^23 molecules x Z moles)

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3 years ago
Various properties of a liquid are recorded during an experiment. the volume of the liquid is measured to be 25.5 milliliters. t
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