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Alex Ar [27]
3 years ago
14

What is the mass of oxygen in 10g of water

Chemistry
1 answer:
Doss [256]3 years ago
8 0

Answer:

8.90g

Explanation:

2×O=2×16.00=32.00g

mass=0.278×32.00g=8.90g

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5 0
3 years ago
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A hydrogen atom requires a minimum energy of 2.18×10^-18 J atom to remove an electron from its ground state level. Determine whe
frosja888 [35]
Just find the energy of the <span>blueviolet light with a wavelength of 434.0 nm using the formula:

E  = hc / lambda

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Putting these values (with appropriate units) in the above formula :

we get:  Energy, E = 4.5 x 10^{-19} J

E = 0.45 x 10^{-18} J

Now, the </span>minimum energy is 2.18×10^-{18} J but our energy is 0.45 x 10^{-18} J which is less.
<span>Means the electron will not be removed

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xxTIMURxx [149]

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6 0
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Answer:

3. Equal numbers of  protons and neutrons

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