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Zina [86]
3 years ago
11

Please help! I will make you brainliest!!!

Chemistry
1 answer:
ikadub [295]3 years ago
6 0

Answer:

Explanation:

um use brainly

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After 11.5 days, 12.5% of a sample of radon-222 that originally weighed 42g remains. What is the half-life of this isotope?
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Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value.  The equation to describe the decay is
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2.4(10^3)

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When a 0.4500 g sample of impure potassium chloride was dissolved in water and treated with an excess ofsilver nitrate, 0.8402 g
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2 years ago
What problems could arise if scientists use different units to measure height
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In bullet points: explain the difference between thermal energy, heat and temperature.
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