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Alex Ar [27]
2 years ago
5

Which statement best describes the polarity of SF 4 CI 2?

Chemistry
1 answer:
Tom [10]2 years ago
6 0

Answer:

use common sense!........

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The green light emitted by a stoplight has a wavelength of 505 nm. What is the frequency of this photon? (c = 3.00 × 10⁸ m/s).
Kitty [74]

Answer:

5.9405*10^14 Hz

Explanation:

Remember the equation c=v*λ

v=frequency

λ=wavelength

By manipulating the equation, we can get it in terms of frequency:

c/λ=v

Now convert wavelength to meters (1nm=m*10^-9)

5.05*10^-7m (2 decimal places were shifted to make the number between 1-10, hence the -7 exponent)

Use the manipulated equation:

(3.00*10^8)/(5.05*10^-7), which yields:

5.9405*10^14 Hz (or s^-1)

6 0
2 years ago
Isotopes are atoms of the same element with the same number of protons and a different number of
Neporo4naja [7]
<span>Isotopes are atoms of the same element with the same number of protons and a different number of:

</span><span>c. neutrons.</span>
5 0
3 years ago
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During the war where did African-Americans receive the best treatment?
Sindrei [870]

Hope this helps. Sorry of it is long

Answer: military

African Americans received the best treatment in the military during war. Making up about 3/4 of the military, African American soldiers proved their efficiency and ability to serve the country, thus receiving more respect from society than if they were to work in more "common" jobs, for example in a factory. However, while they received the best treatment in the military during the war, African Americans still faced segregation within the units of the military, an important fact to note.

7 0
3 years ago
Energy conversions _____. can lose energy as sound can be 100 percent efficient if controlled properly are calculated by multipl
nikdorinn [45]

Answer:

are calculated by multiplying useful energy by the total amount of energy

Explanation:

The energy conversions are never 100 percent efficient. This is because the energy originally is converted into a mixture of the useful and not useful energy. For example, gasoline in the car is converted to motion, sound and friction. The later two (sound and friction) are energies but are less useful. Thus, in this case, the energy conversion is not 100 % efficient. Thus, the energy efficiency equation comes into play. This is given as the ratio of the useful energy to the total energy. It is a fraction.  

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3 years ago
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What type of reaction produces a metal from its metal oxide
Nataly [62]
This is a reduction reaction as the oxide(oxygen) is taken away from the metal =]
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3 years ago
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