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Sonbull [250]
3 years ago
14

A fluorine ion has 9 protons and a charge of negative one how many electrons are in an ion of fluorine

Chemistry
1 answer:
Ulleksa [173]3 years ago
6 0
-1 charge = the atom has gained one electron

9+1=10
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At a certain temperature, a mixture of 2 gases, 11.2 g of oxygen and 104.75 of krypton exert a total pressure of 4.25 atm. What
ki77a [65]

Answer:

Pressure of O₂ = 0.93 atm

Pressure of krypton = 3.32 atm

Explanation:

This problem can be solved by using Dalton's Law of Partial Pressures, which states that the partial pressure of a component of a gaseous mixture depends on the mole ratio of said component and the total pressure of the gaseous mixture.

Pₐ = Xₐ * Ptotal

P ₐ  - the partial pressure of component  a  

χ ₐ   - its mole fraction in the mixture

P total  - the total pressure of the mixture

The moles of the two gases are:

moles of O₂ = 11.2/32 = 0.35 moles

moles of krypton = 104.75/83.8 = 1.25 moles

Total moles = 1.25 + 0.35 = 1.6 moles

Xₐ = number of moles of a /total moles in mixture

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Pressure of krypton = 1.25/1.6 *4.25 = 3.32 moles

4 0
3 years ago
What does a circle filled in with a dark color represent in a pedigree chart?
Alina [70]

A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait. within a family, is used. In a pedigree, a circle represents a female, and a square represents a male. A filled-in circle or square shows that the individual has the trait being studied.

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Answer:

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Answer:

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Is elemental phosphorus dull or high luster?
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