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3 years ago

Which of the following statements best describes an animal impacting the hydrologic cycle?

Chemistry

1 answer:

Katena32 [7]3 years ago

5 0

Answer:

When an animal breathes out, water vapor from inside the animal's lungs is released into the air.

Explanation:

The hydrologic cycle is the cycle of water movement throughout the environment. A is the only only one that "recycles" water;

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A photon with 2.3 eV of energy can eject an electron from potassium. What is the corresponding wavelength of this type of light?

Ira Lisetskai [31]

Answer:

$\lambda=540.16\ nm$

Explanation:

Given that:

The energy of the photon = 2.3 eV

Energy in eV can be converted to energy in J as:

1 eV = 1.60 × 10⁻¹⁹ J

So, Energy = $2.3\times 1.60\times 10^{-19}\ J=3.68\times 10^{-19}\ J$

Considering

$Energy=\frac {h\times c}{\lambda}$

Where,

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

c is the speed of light having value $3\times 10^8\ m/s$

$\lambda$ is the wavelength of the light being bombarded

Thus,

$3.68\times 10^{-19}=\frac {6.626\times 10^{-34}\times 3\times 10^8}{\lambda}$

$\frac{3.68}{10^{19}}=\frac{19.878}{10^{26}\lambda}$

$3.68\times \:10^{26}\lambda=1.9878\times 10^{20}$

$\lambda=5.40163\times 10^{-7}\ m=540.16\times 10^{-9}\ m$

Also,

1 m = 10⁻⁹ nm

So,

$\lambda=540.16\ nm$

3 0

4 years ago

Why are intensive properties useful for identifying a subtenant?

g100num [7]

Because these characteristics do not depend on the amount of sample, nor do they change according to conditions.

8 0

3 years ago

What happens if your caculating the speed of a longitudinal wave and you increase the temp in the room

nordsb [41]

The speed of a longitudinal wave would increase, as the kinetic energy molecules would move quicker in response to the higher temperature.

5 0

3 years ago

1. Which of the combinations in the lab activity had indications that a chemical change occured? Defend your argument with evide

ArbitrLikvidat [17]

Answer:The green growing on the penny of copper and the rust forming on the nail of iron are chemical changes. Boiling away salt water, scraping iron filings from a mixture of sand with a magnet, and breaking a rock with a hammer, are physical changes.

Explanation:

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3 years ago

If 1 egg and 1/3 cup of oil are needed for each bag of brownie mix, how many bags of brownie mix do you need if you want to use

Charra [1.4K]

The answer is 3 bags total

5 0

4 years ago