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Lina20
8 days ago
7

Question 1

Chemistry
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What phenomenon in nature do scientists use to define the length of a meter? Why is this a better definition than “the length of
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Answer:

The speed of light serves as the natural phenomenon that defines the meter's length. A meter is quantified as the distance light travels in a vacuum in 1/(299792458) seconds.

This definition is superior because using a standard meter stick can lead to inaccuracies due to variations in measurements resulting from different atmospheric conditions.

Explanation:

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Classify these compounds as acid, base, salt, or other.? 1. ch3oh 3. hno3 5. nabr
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<span> </span><span>1. Other (Alcohol)
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A scuba tank contains a mixture of oxygen (O2) and nitrogen (N2) gas. The oxygen has a partial pressure of PO2=5.62MPa. The tota
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The partial pressure of nitrogen gas is calculated to be 21.16 MPa. The partial pressure of oxygen equates to 5.62 MPa, and the overall gas pressure is stated as 26.78 MPa. This adheres to the principle that the total pressure in a gas system equals the sum of all individual gas partial pressures. Thus, the total pressure in the system reflects the sum of the partial pressures of nitrogen and oxygen. Accordingly, the partial pressure for nitrogen can be derived as follows: Total pressure minus the partial pressure of oxygen. Thus resulting in: 26.78 - 5.62, which gives a partial pressure of nitrogen at 21.16 MPa.
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Three substances are poured in a cylinder with different densities. Draw the cylinder with the three layers and identify the sub
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