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Lady bird [3.3K]
3 years ago
14

A spectral line has a wavelength of 7.35 *10-7 m. What is the energy of this radiation?

Chemistry
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer:

2.7 x 10^-19 J

Explanation:

The formula needed for this problem is

E = hν

where E = energy, h = Planck's constant = 6.626x10^-34 and ν is the frequency

c = λν

where c = speed of light = 3x10^8, and λ = wavelength

3x10^8 = 7.35x10^-7 . ν

ν = 4.08 x 10^14 Hz

E = 6.626x10^-34 . 4.08x10^14 = 2.7 x 10^-19 J

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Calculate the molar concentration of 1.75 moles of NaCl in<br> 0.50 liters of water.
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Answer:

3.5 Molar

Explanation:

Molarity = no of moles/ volume of solution in liter

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7 0
3 years ago
A fixed quantity of gas fills a volume of 10.6 liters at 638 torr and 83 C. Find the volume it will occupy if the pressure is 10
sukhopar [10]
According to this formula:
(P1V1) / T1 = (P2V2) / T2

convert T from C° to Kelvin:
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convert P from torr to atm:
1 torr = 0.00131578947 atm<span>
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5 0
3 years ago
When methane reacts with oxygen, the products are carbon dioxide (CO2) and water (H2O). How many grams of water are formed if 24
VashaNatasha [74]

Answer:

54 g

Explanation:

To solve this problem we will simply follow the Law of conservation of mass.

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so 54 g of waters are produce.

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