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kozerog [31]
4 years ago
10

Label what each number is pointing to. This is a quick practice to go over what you just learning about the

Chemistry
1 answer:
kiruha [24]4 years ago
8 0

Answer: hey cutie

Explanation:

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Colors are in what part of the electromagnetic spectrum?
Drupady [299]

"As we move through the visible spectrum of violet, blue, green, yellow, orange and red, the wavelengths become longer. The range of wavelengths (400 - 700 nm) of visible light is centrally located in the electromagnetic spectrum (Fig. 1)."

-https://www.asu.edu/courses/phs208/patternsbb/PiN/rdg/color/color.shtml

6 0
3 years ago
In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH4 (g) 2O2
Degger [83]

Answer:

The energy released will be -94.56 kJ or -94.6 kJ.

Explanation:

The molar mass of methane is 16g/mol

The given reaction is:

CH_{4}(g) + 2O_{2} (g) --> CO_{2} (g)+ 2H_{2}O(l)

the enthalpy of reaction is given as  ΔH = -890.0 kJ

This means that when one mole of methane undergoes combustion it gives this much of energy.

Now as given that the amount of methane combusted = 1.70g

The energy released will be:

=\frac{energy released by one moleXgiven mass}{molarmass} =\frac{-890X1.7}{16}= -94.56 kJ

7 0
3 years ago
Dmitri Mendeleev and Henry Moseley developed their periodic tables about forty years apart. During that time, many discoveries i
Sindrei [870]

Answer:

The first one I think

Explanation:

4 0
4 years ago
Read 2 more answers
Energy from the Sun reaches Earth mainly by the process of *
Dimas [21]

Answer:

D.<em> </em>Radiation

<em>Explanation:</em>

The Sun always transfers its energy to any planet (Including Earth) through <u>solar radiation, infrared, and UV rays.</u> These are all examples of <u>radiation.</u>

I hope this helps you! Good luck with your test/assignment! :D

6 0
3 years ago
On what two days would the UK, Chile, South Africa, and Japan have an equal amount of day and night? O Winter Solstice and Summe
mario62 [17]
I say both equinox because winter solstice has the least amount of sunlight and the summer solstice has the most ampunt of daylight so i said both equinox
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3 years ago
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