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Inga [223]
3 years ago
6

Determine the frequency of light with a wavelength of 4.50 x 10-7 m.

Chemistry
1 answer:
jeyben [28]3 years ago
4 0
The frequency of a photon of red light with wavelength 4.50 x 10−7m is 6.67 x 1014Hz
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At a temperature of 280 K, the gas in a cylinder has a volume of 20.0 liters. If the volume of the gas is decreased to 10.0 lite
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To solve this we assume that the gas inside is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

 

T1 / V1 = T2 / V2

 

T2 = T1 x V2 / V1

 

T2 = 280 x 20.0 / 10

 

<span>T2 = 560 K</span>

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2 years ago
CaC2 + 2H2O → C2H2 + Ca(OH)2 If 2.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
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3 years ago
What feature of New York is located about 44°N, 74°W?
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The Adirondacks is located there
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A sample of pure tin metal is dissolved in nitric acid to produce 15.00 mL of solution containing Sn2+. When this tin solution i
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Answer:

1.00 M

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Sn^2+ reacts with KMNO4 as follows;

5Sn^2+(aq) + 2MnO4^-(aq) + 16H^+(aq) ----> 5Sn^4+(aq) + 2Mn^+(aq) + 8H2O(l)

The number of moles of MnO4^- reacted = 42.1/1000 L × 0.145 mol/L

= 0.0061 moles

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Since the volume of the Sn^2+ solution is 15.00mL or 0.015 L

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Concentration = 1 M

6 0
3 years ago
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