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liberstina [14]
3 years ago
7

In the reaction Mg(s) + Br2() → MgBrz(s), what should be the coefficient for

Chemistry
1 answer:
lbvjy [14]3 years ago
6 0

Answer:

1

Explanation:

Chemical equation:

Mg + Br₂  →  MgBr₂

Balanced chemical equation:

Mg + Br₂  →  MgBr₂

Left hand side                         Right hand side

Mg = 1                                         Mg = 1            

Br = 2                                          Br = 2

There are one Mg and 2 Br atoms on both side of equation thus this equation is balanced. Thus coefficient with bromine is 1.

Mg is present in group 2 it loses two valance electrons and get +2 oxidation state. Bromine is present in group 17 have 7 valence electrons. Thus one bromine atom need only one electron to complete the octet that's why two bromine atoms will attached with one magnesium atom to cancel the charge +2 and make the compound neutral.

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1.05moles

Explanation:

Given parameters:

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Unknown:

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Solution:

The mole is the amount of substances that contains Avogadro's number of particles i.e 6.02 x 10²³

 To find the number of moles:

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moles brainly.com/question/1841136

#learnwithBrainly

7 0
2 years ago
9474 millimeters to centimeters using scientific notation showing work
puteri [66]

Answer:

9.474 x 10^2

Explanation:

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so it must have one digit in front so.. 947.4 becomes 9.474 and because you move 2 places to the left, ur power is positive 2

and proof 10^2 is 100 so multiply 9.474 by 100 and u will get 947.4 cm which is also 9474 mm

8 0
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Explanation:

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Answer:

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