Answer:
The yield percent is 77.68%
Explanation:
1 mole of 
yields 2 moles of Fe.
So, 11.2 moles of Iron(III) oxide must yield 22.4 moles of Fe theoretically. This is according to the balanced equation.
Theoretical Yield = 22.4 moles of Fe
Experimental Yield = 17.4 moles of Fe
Therefore, the yield percent is 77.68%
I’m pretty sure it’s the first one
Answer:
Non metals are brittle solids.
Explanation:
The option A is correct,
Non metals are brittle solids.
It is the property of non metals. They can not be stretched into thin wire if stress is applied non metals brake down.
All other options are incorrect because,
B = Non metals are often malleable
It is the property of metals. Metals can be malleable into think sheets.
C = Non metals often conduct electricity.
It is the property of metals. Metals conduct electricity because of availability of free electrons.
D = Non metals are often ductile.
It is the property of metals. They can stretched into thin wire.
From the atomic clock that utilizes C-133 which has an approximate frequency of 9.193 x 109 Hz. The wavelength of the energy is calculated to be 0.0326m.
From the given information:
- The frequency f = 9.193 × 10⁹ Hz = 9.193 × 10⁹ 1/s
- The wave speed c = 3.00 × 10⁸ m/s
Recall that:
The wavelength is the spatial successive distance between two crests of a wave and can be expressed by the formula:
Therefore, we can conclude that the wavelength of the atomic clock is 0.0326m. As such Option D is correct.
Learn more about wavelength here:
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Answer:
In one mole of glucose, there are
6.022×1023
individual glucose molecules
Explanation:
