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kotykmax [81]
3 years ago
9

The chemical reaction between iron (Fe) and oxygen (O) results in the loss of electrons from iron. This reaction is an example o

f _____.
A)oxidation
B)respiration
C)combustion
D)sublimation
Chemistry
2 answers:
Afina-wow [57]3 years ago
4 0

Your answer is C (i am only writing this part because i dont wanna explain it bla bla bla bla bla bla bla)

Shkiper50 [21]3 years ago
3 0

Answer:

The answer is C

Explanation:

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How many atoms are there in 4.13 moles of nickel (Ni)
PtichkaEL [24]

Answer:

24.87× 10²³ atoms of Ni

Explanation:

Given data:

Number of atoms of Ni= ?

Number of moles of Ni = 4.13 mol

Solution:

we will calculate the number of atoms of Ni by using  Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

4.13 mol ×  6.022 × 10²³ atoms /1 mol

24.87× 10²³ atoms of Ni

6 0
3 years ago
2.
schepotkina [342]

Answer:

b. 6.02 x 1023 molecules

Explanation:

The formula mass of ammonia is 14 + 1 × 3 = 17.

The number of moles in 27.6g ammonia is 27.6 ÷ 17 = 1.62 mol.

A mole is 6.02 × 10²³, so the number of hydrogen atoms in a 1.62 moles of ammonia is 1.62 × 6.02 × 10²³ × 3 = 2.93 × 10² atoms.

3 0
2 years ago
Atoms of which element have the most valence electrons?
grin007 [14]

Explanation:

neon has 8valence electrons

chroline has 7 valence electrons

nitrogen has 5 valence electrons

oxygen has 6 valence electrons

so neon has the most valence elctrons

6 0
3 years ago
Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He i
taurus [48]

The law of conservation of energy or first law of thermodynamics

Explanation:

From the context we can infer that Mr. Jones was describing the law of conservation of energy.

According to the law of conservation of energy:

  "energy is not created nor destroyed by can be transformed from one form to another" .

  The captured energy is a form of energy and it is change into other forms in the ecosystem.

Energy is initially captured in the ecosystem by plants.

learn more:

Laws of thermodynamics brainly.com/question/3564634

#learnwithBrainly

6 0
3 years ago
The following balanced equation shows the formation of sulfur dioxide.
AlexFokin [52]

actually the answer is C. 15.0 on ed

6 0
3 years ago
Read 2 more answers
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