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3 years ago

Write down the used of hydrogen gas

Chemistry

1 answer:

MariettaO [177]3 years ago

7 0

Answer:

Nearly all of the hydrogen consumed in the United States is used by industry for refining petroleum, treating metals, producing fertilizer, and processing foods. U.S. petroleum refineries use hydrogen to lower the sulfur content of fuels.

Explanation:

Hope it helped brainlist plz:)

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A cube has a height of 8 cm and a mass of 457 g. What is its density?

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Answer:

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Explanation:

A cube has a height of 8 cm and a mass of 457 g. What is its density?

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12. What is the frequency of a photon with an energy of 3.03 x 10-19 J?

bazaltina [42]

Answer:

$u=4.57x10^5GHz$

Explanation:

Hello.

In this case, given the formula:

$E=h*u$

Whereas E is the energy, h the Planck's constant and u the frequency of the photon. Thus, solving for it, we obtain:

$u=\frac{E}{h}=\frac{3.03x10^{-19}J}{6.63x10^{-34}J*s}\\ \\u=4.57x10^{14}s^{-1}$

Or also:

$u=4.57x10^{14}Hz*\frac{1GHz}{1x10^9Hz}\\ \\u=4.57x10^5GHz$

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3 years ago

Write down the used of hydrogen gas​

Write down the used of hydrogen gas