3 years ago

Please help! BRAINLIEST to right answerrrr

Chemistry

2 answers:

zloy xaker [14]3 years ago

8 0

Answer: from the hotter surface to the colder one

Explanation:

timofeeve [1]3 years ago

7 0

Answer:d

Explanation:

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2 years ago

If the half life of iridium-182 is 15 years, how much of a 3 gram sample is left after 2 half-lives?

padilas [110]

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D. 0.75 grams

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The data given on the iridium 182 are;

The half life of the iridium 182, $t_{(1/2)}$ = 15 years

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The amount left, N(t) after two half lives is given as follows;

$N(t) = N_0 \left (\dfrac{1}{2} \right )^{\dfrac{t}{t_{1/2}} }$

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