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2 years ago

A heat lamp produces____ light.

Chemistry

1 answer:

Ipatiy [6.2K]2 years ago

7 0

Answer:

infrared light

Explanation:

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20 POINTS!!!

muminat

I would say it is a function of all of the choices. if not then the answer is the circulatory system

4 0

2 years ago

12. Which rational number is least? A B C D 0.66 - 4 - -0.6

vazorg [7]

Answer:

yeahhhh

Explanation:

hey friend

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2 years ago

Hydrogen atoms absorb energy so that the electrons are excited to n=4. Calculate the wavelength, in

FromTheMoon [43]

Answer:

the wavelength, in nm, of the photon is 487.5 nm

Explanation:

Given:

n = 4 (excited)

n = 2 (relaxes)

Question: Calculate the wavelength, in nm, λ = ?

First, it is important to calculate the energy of the electron when it excited and then when it relaxes.

$E_{1} =\frac{-13.6}{n^{2} } =\frac{-13.6}{4^{2} } =-0.85eV$ (excited)

$E_{2} =\frac{-13.6}{2^{2} } =-3.4eV$ (relaxes)

The change of energy

ΔE = E₁ - E₂=-0.85 - (-3.4) = 2.55 eV = 4.08x10⁻¹⁹J

For a photon, the wavelength emitted

$\lambda =\frac{hc}{delta(E)}$

Here

h = Planck's constant = 6.63x10⁻³⁴J s

c = speed of light = 3x10⁸m/s

Substituting values:

$\lambda =\frac{6.63x10^{-34}*3x10^{8} }{4.08x10^{-19} } =4.875x10^{-7} m=487.5nm$

8 0

2 years ago

Help me answer this please

Vlad1618 [11]

Its a scam dont press the link

3 0

2 years ago

How do u find ratios of unknown value

LenaWriter [7]

The simplest ratios compare only two values, but ratios comparing three or more values are also possible. In any situations in which two or more distinct numbers or quantities are being compared, ratios are applicable. By describing quantities in relation to each other, they explain how chemical formulas can be duplicated or recipes in the kitchen expanded.
Please let me know if I’m wrong

4 0

3 years ago