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Lena [83]
2 years ago
11

Which arrow in the diagram represents the burning of fossil fuels? Choose 1 answer: Choose 1 answer: (Choice A) A arrow 1 (Choic

e B) B arrow 2 (Choice C) C arrow 3 (Choice D) D arrow 4
picture - https://cdn.kastatic.org/ka-perseus-images/80ac63736473a685a2d7c6dff70d0675c29cf858.svg
Chemistry
1 answer:
Alona [7]2 years ago
7 0

Answer: arrow 4

Explanation:

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Law of Conservation of Mass in terms of atoms
VARVARA [1.3K]

No atoms are lost or made during the chemical reaction so the total mass of the products is equal to the total mass of the reactants. In an atom, protons and neutrons contribute to the mass and since the number of them doesn’t change, the mass doesn’t either.

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2 years ago
What was the original element formed moments after the Big Bang? What then created higher order elements?
Semmy [17]
Hydrogen (H) was first, followed by helium (He).
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Which element has the greatest electronegativity? B C Cl
mihalych1998 [28]
Chlorine. Electronegativity rises as you go up and to the right on the periodic table.
3 0
3 years ago
Determine the relative formula mass of hexasodium difluoride using the periodic table below. A. 138 g/mol B. 176 g/mol C. 20 g/m
laila [671]

Answer:

Option B. 176g/mol

Explanation:

We'll begin by writing the chemical formula for hexasodium difluoride. This is given below:

Hexasodium means 6 sodium atom

Difluoride means 2 fluorine atom.

Therefore, the formula for hexasodium difluoride is Na6F2.

The relative formula mass of a compound is obtained by simply adding the atomic masses of the elements present in the compound.

Thus, the relative formula mass of hexasodium difluoride, Na6F2 can be obtained as follow:

Molar mass of Na = 23g/mol

Molar mass of F = 19g/mol

Relative formula mass Na6F2 = (23x6) + (19x2)

= 138 + 38

= 176g/mol

Therefore, the relative formula mass of hexasodium difluoride, Na6F2 is 176g/mol

3 0
3 years ago
Read 2 more answers
What characteristic do all living things share?
BARSIC [14]

All organisms share certain characteristics of life, for example, all living things are made of cells and they must reproduce to make the next generation. Without these characteristics, there is no life.

I hope i helped??

8 0
3 years ago
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