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blsea [12.9K]
3 years ago
7

Is the following equation balanced or unbalanced?

Chemistry
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0

Answer:

The given equation is Balanced.

Explanation:

AlBr₃ + 3K → 3KBr  + Al

The balanced equation consist of equal number of atoms of elements in reactant and product side.

The given equation is balanced because one aluminium, three bromine and three potassium atoms are present on both side of equation.

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Of the choices, which metal element would be the most reactive? (Please explain why the answer is the answer).
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Answer:

sulfur

Explanation:

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What is the relation between work done height mass and acceleration due to gravity​
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Identify the element with 3 energy levels and 2 valence electrons.
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3 years ago
Most reactive<br> O Be<br> O Mg<br> O Ba<br> o Ca<br> Which one is the most reactive
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7 0
3 years ago
Calculate the molarity of a solution of Nach if it contains 7.2.g Nach in 100.0 mL of solution. andver: m Nach . .
Norma-Jean [14]

Answer:

1.23 M

Explanation:

Molarity of a substance , is the number of moles present in a liter of solution .

M = n / V

M = molarity  

V = volume of solution in liter ,

n = moles of solute ,

Moles is denoted by given mass divided by the molecular mass ,  

Hence ,  

n = w / m

n = moles ,  

w = given mass ,  

m = molecular mass .

From the question ,

w = given mass of NaCl = 7.2 g

As we know , the molecular mass of NaCl = 58.5 g/mol

Moles is calculated as -

n = w / m  =  7.2 g / 58.5 g/mol = 0.123 mol

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M = n / V  =  0.123 mol / 0.1 L = 1.23 M

5 0
3 years ago
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