2 years ago

What provides the energy to set the water cycle in motion?

Chemistry

1 answer:

LekaFEV [45]2 years ago

4 0

The water cycle is driven by the energy from the sun.

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Kinetic energy differs from chemical energy in that

Sliva [168]

Chemical energy is the answer to your question

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2 years ago

If a notebook has a mass of 50 grams, a length of 12 cm, a width of 5 cm and a height of 1cm, what is the volume of the notebook

Wewaii [24]

Answer:

I'm pretty sure the answer is 60cm.

Explanation:

Volume = L×W×h

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2 years ago

Gold has a molar (atomic) mass of 197 g/mol. consider a 2.47 g sample of pure gold vapor. (a) calculate the number of moles of g

adell [148]

N = given mass/ molar mass.
n = number of moles
given mass = 2.47 g
molar mass = 197 g/mol

n = 2.47 / 197
n = 0.01253 moles.
I'm sure you wanted to ask more than this. Just put some comments in. I can do the same.

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2 years ago

Pu is a nuclear waste byproduct with a half-life of 24,000 y. What fraction of the 239Pu present today will be present in 1000 y

olya-2409 [2.1K]

Answer:

0.9715 Fraction of Pu-239 will be remain after 1000 years.

Explanation:

$\lambda =\frac{0.693}{t_{\frac{1}{2}}}$

$A=A_o\times e^{-\lambda t}$

Where:

$\lambda$ = decay constant

$A_o$ =concentration left after time t

$t_{\frac{1}{2}}$ = Half life of the sample

Half life of Pu-239 = $t_{\frac{1}{2}}=24,000 y$ [

$\lambda =\frac{0.693}{24,000 y}=2.8875\times 10^{-5} y^{-1]$

Let us say amount present of Pu-239 today = $A_o=x$

A = ?

$A=x\times e^{-2.8875\times 10^{-5} y^{-1]\times 1000 y}$

$A=0.9715\times x$

$\frac{A}{A_0}=\frac{A}{x}=0.9715$

0.9715 Fraction of Pu-239 will be remain after 1000 years.

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2 years ago

How would an increase in carbon dioxide concentration in the atmosphere change the green house effect? A. Carbon dioxide would c

Elis [28]

Answer:

Explanation:

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2 years ago