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3 years ago

Rain soaks into the soil or runs off into oceans, rivers, and lakes. ___________ which process is this

Chemistry

1 answer:

krok68 [10]3 years ago

5 0

Answer:

The water falls to the earth as precipitation, such as rain, hail, sleet, and snow. When precipitation reaches the earth's surface, some of it will flow along the surface of the land and enter surface water like lakes, streams, and rivers, as runoff. The rest of it soaks or percolates into the soil, called

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Which statement is correct concerning hereditary information?

Papessa [141]

Answer:

the answer to this question is option A mark me as brainliest

mark me as brainliest

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3 years ago

In common speech, some people may use the terms hypothesis and theory interchangeably. In science, however, the terms have diffe

Leto [7]

Answer:

A hypothesis is something you can test a theory is just a thought that you have.

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3 years ago

Read 2 more answers

Based on the law of conservation of mass, which of the following statements is correct? Matter is neither created nor destroyed.

Dmitrij [34]

The first statement (Matter is neither created nor destroyed) is correct.

The second statement would violate the law of conservation of mass (I will refer to this as LCM), as it would mean matter can "flow" into the universe, but not out, meaning the total matter will never be less than it was before.

The third statement violates LCM because it means matter is created during a reaction, which is not true.

The last statement violates LCM because it means matter is lost during a reaction, which is not true.

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3 years ago

Explain why mixing two, or more, substances is a physical change.

Strike441 [17]

<span>When two or more substances are mixed together but not chemically joined they are called as mixtures. Therefore, it is only a physical change taking place.
</span>
I hope this helps you! Good luck :)

4 0

4 years ago

Electric power is measured in watts (1 W = 1 J/s). About 95% of the power output of an incandescent bulb is converted to heat an

nlexa [21]

Answer:

9.430 * 10¹⁷ protons per second whill shine on the book from a 62 W bulb

Explanation:

To answer this question, first let's calculate the energy of a single photon with a wavelength (λ) of 504 nm:

E = hc/λ

Where h is Planck's constant (6.626*10⁻³⁴ J·s) and c is the speed of light (3*10⁸ m/s).

E = 6.626*10⁻³⁴ J·s * 3*10⁸ m/s ÷ (504*10⁻⁹m) = 3.944 * 10⁻¹⁹ J.

So now we can make the equivalency for this problem, that

<u>1 proton = 3.944 * 10⁻¹⁹ J</u>

Now we convert watts from J/s to proton/s:

1 $\frac{J}{s}*\frac{1proton}{3.944*10^{-19}J}=2.535*10^{18} \frac{proton}{s}$ = 1 W

Solving the problem, a 62 W bulb converts 5% of its output into light, so:

62 * 5/100 = 3.1 W

3.1 watts are equal to [ 2.535*10¹⁸ proton/s * 3.1 ] = 7.858 * 10¹⁸ proton/s

Of those protons per second, 12% will shine on the chemistry textbook, thus:

7.858 * 10¹⁸ proton/s * 12/100 = 9.430 * 10¹⁷ protons/s

8 0

3 years ago