3 years ago

Burning plants contributes to global warming because:

Chemistry

1 answer:

Drupady [299]3 years ago

5 0

Answer:carbon dioxide is released during combustion

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day and night is the main way you can tell as well as the stars moving across the sky, and we can tell it rotates by looking at the sky and seeing the sun move across the sky during the day.

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A sample of carbon of mass 250 mg from wood found in a tomb underwent 2480 carbon- 14 disintegrations in 20 h. Estimate the time

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Explanation:

Let the age to be found in years is y.

Hence, $(2480 disintegrations) \times \frac{\frac{1.0g}{0.250g}}{1.84 \times 10^{4} disintegrations}$

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Solve for y as follows.

0.53913 = (\frac{1}{2})^{\frac{y}{5730yr}}

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log 0.53913 = $(\frac{z}{5730}) log \frac{1}{2}
$

$\frac{log 0.53913}{log (1/2)}$ = $\frac{z}{5730}$

z = $\frac{5730 \times log 0.53913}{log (1/2)}$

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3 years ago

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Explanation: i think

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