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IceJOKER [234]
3 years ago
6

A fossilized animal that was killed by a volcanic eruption has 6.25 percent of its original amount of carbon-14 remaining; this

radioisotope has a half-life of 5730 years. How long ago did the volcano erupt?
Chemistry
2 answers:
Art [367]3 years ago
7 0
<span>22 million years ago</span>
love history [14]3 years ago
7 0
Yea i think it was 22million years ago
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Answer:

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5 0
3 years ago
The sea water has 8.0x10^-1 cg of element strontium. Assuming that all strontium could be recovered, how many grams of strontium
PilotLPTM [1.2K]

984 grams of strontium will be recovered from 9.84x10^8 cubic meter of seawater.

Explanation:

From the question data given is :

volume of strontium in sea water= 9.84x10^8 cubic meter

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so 9 .84x10^8 cubic meter

 \frac{9 .84x10^8}{1000000}      = 984 ml.

density of sea water = 1 gram/ml

from the formula mass of strontium can be calculated.

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mass = 1 x 984

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98400 centigram of strontium will be recovered.

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4 0
3 years ago
If a helium filled ballon has a volume of 3.4l at 25°c and 1.18atm., what is its volume at STP?​
vladimir2022 [97]

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3.711 L

Explanation:

The formula you need to use is the following:

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klemol [59]
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