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Pavel [41]
3 years ago
7

What is the atomic number of an isotope with the following symbol: 20 F

Chemistry
1 answer:
ser-zykov [4K]3 years ago
4 0

Answer:9

Explanation:

F is Flourine on the periodic table; the atomic number of Flourine is 9

caution: when you say “20 F” your meaning is unclear. regardless of what you mean, though, the atomic number of F is 9

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This group of fungi has reproductive cells with flagella so that they can swim
dangina [55]

Answer:

The answer would be chytrids.

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Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high
VLD [36.1K]
Metals are used in many products because of the characteristic properties that most metals have. The product that requires the high luster of metals is a mirror. Luster is used to describe something that reflect light off a surface. Metals are known to have the quality of reflecting light from its surface therefore it is a good material for the said product.
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A marshmallow has an initial volume of 0.027 L at standard pressure (1.0 atm). If the marshmallow is placed in a vacuum chamber
MatroZZZ [7]

Answer:

The pressure inside the chamber is 0.132 atm

Explanation:

Step 1: Data given

The initial volume = 0.027 L

The initial pressure = 1.0 atm

The volume changes to 0.205 L

Step 2: Calculate the pressure

P1*V1 = P2*V2

⇒with P1 = the initial pressure = 1.0 atm

⇒with V1 = the initial volume = 0.027 L

⇒with P2 = the changed pressure = TO BE DETERMINED

⇒with V2 = the changed volume = 0.205 L

1.0 atm *0.027 L = P2*0.205 L

P2 = 0.027/0.205

P2 = 0.132 atm

The pressure inside the chamber is 0.132 atm

6 0
3 years ago
Suppose the formation of nitryl fluoride proceeds by the following mechanism: step elementary reaction rate constant (g) (g) (g)
ziro4ka [17]

Complete Question

The complete question is shown on the first uploaded image  

Answer:

a

  2NO_2 _{(g)} +  F_2_{(g)} ---->  2NO_2 F_{(g)}

b

  r = \frac{ k [NO_2]^2 [F_2]}{[NO_2F]}

Explanation:

      From the question we are told that

          The formation mechanism is  

                      NO_2_{(g)} + F_2 _{(g)} ----> NO_2 F_{(g)} + F_{(g)}

                      F_{(g)} +  NO_2 _{(g)} ---> NO_2 F_{(g)}

The overall balanced equation is

              2NO_2 _{(g)} +  F_2_{(g)} ---->  2NO_2 F_{(g)}

We combined the first reactant and the last product and the balanced the number of mole

     The observable rate law is

                 r = \frac{ k [NO_2]^2 [F_2]}{[NO_2F]}

This rate law is derived from the balanced chemical equation

     

6 0
3 years ago
An atom has atomic number 5 and mass number 11. How many neutrons does the atom have?
Anna11 [10]

Answer: it’s 6

Explanation:

3 0
3 years ago
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