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nydimaria [60]
3 years ago
9

Calculate the wavelength of light with an energy of 3.60x10^-19 J *

Chemistry
1 answer:
Travka [436]3 years ago
3 0

Explanation:

from E = mc^2 and de Broglie wavelength=h/mc

combine the eqns with respect to m(considering the body is moving with the speed of light(c))

then

E= hc/de Broglie wavelength

since, c= 3× 10^ 8

h= 6.626 × 10^ -34 and E is given, substitute the values.

sorry I don't have my calculator.

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What is the mass of 3.0 x x times 10^23 atoms of neon?
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Answer:

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Explanation:

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3 years ago
How many grams of sulfur in 4.20 x 1021 atoms of sulfur?
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Calculate the area of a 3.0 inch by 5.0 inch index card in square millimeters (mm). (You can look up the formula for the area of
meriva

Answer:

The area of the given rectangular index card = <u>9677.4 mm²</u>    

Explanation:

Area is defined as the space occupied by a two dimensional shape or object. The SI unit of area is square metre (m²).

<u>The area of a rectangle</u> (A) =  length (l) × width (w)

Given dimensions of the rectangle: Length (l) = 5.0 inch, Width (w) = 3.0 inch

Since, 1 inch = 25.4 millimetres (mm)

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3 years ago
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