3 years ago

Please help I beg you help

Chemistry

1 answer:

daser333 [38]3 years ago

8 0

Answer:

feldspar. it can scratch gypsum and apatite since there number is lower, and can be scratched by quartz because it has a higher number

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The first-order decay of radon has a half-life of 3.823 days. How many grams of radon decomposes after 5.55 days if the sample i

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Answer:

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R.R = P.E/(2ᵇ/ⁿ)

Where R.R = radioactive remain, P.E = parent element, b = Time, n = half life.

Where P.E = 100 g , b = 5.55 days, n = 3.823 days.

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4 years ago

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Please help I beg you help ​

Please help I beg you help