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cestrela7 [59]
3 years ago
15

Potassium (K) combines with magnesium bromide (MgBr2) to form potassium bromide (KBr) and magnesium (Mg) during a chemical react

ion.
Which of the following shows the balanced chemical equation for this reaction?

a) K + MgBr2 = KBr + Mg
b) 2 K + MgBr2 → 2 KBr + Mg
c) 2 K + MgBr2 = KBr + 2 Mg
d) 2 K +2 MgBr2 = 2 KBr + 2 Mg
Chemistry
1 answer:
amm18123 years ago
5 0

Answer: option B - 2 K + MgBr2 = 2 KBr + Mg

Explanation:

2K + MgBr2 --> 2 KBr + Mg

On Left side: 2moles of Potassium (K) reacts with 1 mole of MgBr2

On Right side: 2 moles of KBr and 1 mole of Mg.

You will observe that the coefficient of each element on left side and Right side is balanced in option B, unlike other options.

So, option B is the answer.

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3 years ago
Given: f(x) 3x-1. g(x) 2x^2-3
Blizzard [7]
<h3>Solution:</h3>

f(x) = 3x - 1 = 0

f(x) = x = 1/3

By putting the value of x in g(x), we get

g(x) = 2(1/3)^2 - 3

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<h2>Answer:</h2>

g(x) = -25/9

6 0
3 years ago
Read 2 more answers
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