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dimaraw [331]
3 years ago
13

The Sun radiates energy through space and to the Earth's surface. Most of this energy is in the _______ part of the light spectr

um.
Chemistry
2 answers:
Margaret [11]3 years ago
8 0
<span>It reaches us though electromagnetic waves, basically light. This light has energy in it and when light hits a particle (like air or one of the countless particlesin you skin)</span>
zepelin [54]3 years ago
6 0

Based on the information that I know, the correct answer would be visible light. Because, most of the energy from our star the sun, enters in our atmosphere.  The helpful atmosphere blocks gamma rays, then visible light is able to enter, this may have not have sounded smart, but it's correct, your welcome, not trying to be a show off.

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If an atom has 13 electrons how many electron shells does it have
svlad2 [7]

Answer:

Explanation:

If an atom has 13 electrons then it belongs to p-block of periodic table.

s level can accommodate 2 electrons.

p level can accommodate 6 electrons.

13 means 1s2 2s2 2p6 3s2 3p1.

As you can see there totally 5 sub-shells.

Total number of shells are 3(1,2,3).

4 0
3 years ago
How many moles are represented by 118g of cobalt? Cobalt had an atomic mass of 58.93amu
skad [1K]
N=m/M
n=118/58.93=2
Answer: 2 moles
5 0
4 years ago
The half-life of a radioactive isotope is the amount of time it takes for a quantity of that isotope to decay to one half of its
Sedaia [141]

Radio active decay reactions follow first order rate kinetics.

a) The half life and decay constant for radio active decay reactions are related by the equation:

t_{\frac{1}{2}} =\frac{ln 2}{k}

t_{\frac{1}{2}} = \frac{0.693}{k}

Where k is the decay constant

b) Finding out the decay constant for the decay of C-14 isotope:

Decay constant (k) = \frac{0.693}{t_{\frac{1}{2}}}

k = \frac{0.693}{5230 years}

k = 1.325 * 10^{-4} yr^{-1}

c) Finding the age of the sample :

35 % of the radiocarbon is present currently.

The first order rate equation is,

[A] = [A_{0}]e^{-kt}

\frac{[A]}{[A_{0}]} = e^{-kt}

\frac{35}{100} = e^{-(1.325 *10^{-4})t}

ln(0.35) = -(1.325 *10^{-4})(t)

t = 7923 years

Therefore, age of the sample is 7923 years.

3 0
3 years ago
1Explain why the ions of sodium, magnesium and aluminium are smaller than their corresponding atoms.
ella [17]

Answer:

I think magniesum is combined with the sulfer which is why its at 3 omegas.

Hope this helps!

Explanation:

3 0
3 years ago
What is the wavelength of a 3 x 1012 Hz infrared wave?
Alenkasestr [34]

Answer:

D

Explanation:

wavelength = speed of light/ frequency

= (3 x 10^8 m/s) / (3 x 10^12 Hz)

= 1 x 10^-4 m

5 0
3 years ago
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