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Nastasia [14]
3 years ago
9

The absorption spectrum of neon has a line at 633 nm. What is the energy of this line? (The speed of light in a vacuum is 3.00 x

108 m/s, and Planck's constant is 6.626 x 10-34 J·s.)

Chemistry
1 answer:
timurjin [86]3 years ago
7 0

Answer:

B

Explanation:

E = hc/\lambda. Remember, it is in meters not nanometers so you have to convert. You end up with B.

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Sav [38]

- 34 {}^{15}

  • The power of -34 will be 15 because 15 zeroes are given....
8 0
3 years ago
The heat equation, as given in the introduction, can also be rearranged to calculate the mass or temperature change for a substa
notka56 [123]

Answer:

The correct answer is 281.39 grams.

Explanation:

To arrive at this answer you must first keep in mind the basic equation:

<em>Q = m*Cp* ΔT</em>

Now, in order to calculate the necessary aluminum mass that absorbs 2138 J when passing from 14.83 to 23.31 ° C you must "clear" <em>m</em> of the previous equation.

This means, leave only the mass on one side of the equation, and "pass" <em>Cp</em> and <em>ΔT</em> to the other side dividing <em>Q</em>.  This would look like this:

m= Q/ (Cp*ΔT)

Then, <u>you need the value of specific heat of aluminum</u> in the correct units, that is J / g ° C, the approximate value is 0.896.

ΔT is calculated by doing the mathematical operation:

23.31 °C - 14.83 °C = 8.48 °C

<em> Finally, the values of: Q (data provided in joules), Cp (J / g ° C) and ΔT (calculated in ° C) are replaced in the last equation and the mass (in grams) is calculated resulting in 281.39 grams.</em>

3 0
4 years ago
What are two properties of diamonds that make them different from other forms of carbon?
Airida [17]
They are tetrahedral in shape
they carbon atom share all four of its outer electrons with other carbon atoms to form 3D shape
6 0
3 years ago
Match the SI unit to the quantity it measures. second gram kelvin mole ampere meter candela kilogram nanosecond mass arrowRight
Gemiola [76]

SI unit- Quantity

second- time

kilogram- mass

kelvin- temperature

ampere- electric current

S.I. Unit of time is second.

S.I. Unit of mass is kilogram.

S.I. Unit of temperature is kelvin.

S.I. Unit of electric current is ampere.

So match will be as follows:

second- time

kilogram- mass

kelvin- temperature

ampere- electric current


8 0
3 years ago
This is the chemical formula of Nitrogen gas.
MariettaO [177]
D is incorrect it is not a compound.
3 0
3 years ago
Read 2 more answers
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