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Mariulka [41]
3 years ago
14

when you drop a block of metal into water, you find that the metal sinks. what happens if you drop a smaller block of the same m

etal into water?
Chemistry
2 answers:
const2013 [10]3 years ago
7 0

it'll probably sink....

oksano4ka [1.4K]3 years ago
7 0

sink most likely ok?

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If a hydrogen atom and a helium atom have the same kinetic energy:________
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Answer: If a hydrogen atom and a helium atom have the same kinetic energy then the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.

Explanation:

The relation between energy and wavelength is as follows.

E = \frac{hc}{\lambda}\\

This means that energy is inversely proportional to wavelength.

As it is given that energy of a hydrogen atom and a helium atom is same.

Let us assume that E_{hydrogen} = E_{helium} = E'. Hence, relation between their wavelengths will be calculated as follows.

E_{hydrogen} = \frac{hc}{\lambda_{hydrogen}}    ... (1)

E_{helium} = \frac{hc}{\lambda_{helium}}         ... (2)

Equating the equations (1) and (2) as follows.

E_{hydrogen} = E_{helium} = E'\\\frac{hc}{\lambda_{hydrogen}} = \frac{hc}{\lambda_{helium}} = E'\\\lambda_{helium} = \lambda_{hydrogen} = E'

Thus, we can conclude that if a hydrogen atom and a helium atom have the same kinetic energy then the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.

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Bacteria consume other organisms for food, making them heterotrophs. True or False?​
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I would say true!

Explanation:

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the atoms of a certain element each contain 11 protons and 1 valence electron. what's the element and it's chemical reactivity?
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