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Bond [772]
3 years ago
8

I really need help solving this question

Chemistry
2 answers:
olchik [2.2K]3 years ago
4 0
The answer to this would be helium
hodyreva [135]3 years ago
3 0
He The reason behind this is because if you look on the periodic table you’ll see that he is the element name for neon neon is in the noble gas
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3 years ago
The layered structures made of calcium carbonate by precambrian cyanobacteria are called _____.
Valentin [98]
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Vladimir79 [104]

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7 0
3 years ago
The hydrogen-line emission spectrum includes a line at a wavelength of 434 nm. What is the energy of this radiation? (h= 6.626 x
Andrews [41]
Wavelength = 434nm = 434 x 10⁻⁹m
planck's constant = <span>h= 6.626 x 10 ⁻³⁴ J
E =?
by using the formula;
E = hc /</span>λ
value for c is 3 x 10⁸ m/s
E = (6.626 x 10 ⁻³⁴ J)(3 x 10⁸ m/s) / 434 x 10⁻⁹m
E = 1.9878 x 10⁻²⁵ / 434 x 10⁻⁹m
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6 0
3 years ago
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Bad White [126]
Im pretty sure the answer is c
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3 years ago
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