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Rufina [12.5K]
3 years ago
14

How to Convert 2.50mol of LiBr to g

Chemistry
1 answer:
julia-pushkina [17]3 years ago
6 0

Answer:

240.5g

Explanation:

steps:

given/ 1  - 2.5mol LiBr / 1

Multiplication - 78g/ 1 mol       ( 78 comes from the formula weight of LiBr )

answer- 240.5g

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You have 1.0 mole of each compound below. which has the greatest mass?
kramer
(a) Iron (iii) sulphate:
From the periodic table:
mass of iron = 55.845 grams
mass of sulphur = 32.065 grams
mass of oxygen = 16 grams
Iron (iii) sulphate has the formula: Fe2(SO4)3
molar mass = 2(55.845) + 3(32.065) + 3(4)(16) = 399.885 grams

(b) Sodium hydroxide:
From the periodic table:
mass of sodium = 22.989 grams
mass of oxygen = 16 grams
mass of hydrogen = 1 gram
Sodium hydroxide has the formula: NaOH
molar mass = 22.989 + 16 + 1 = 39.989 grams

(c) Barium carbonate
From the periodic table:
mass of barium = 137.327 grams
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mass of oxygen = 16 grams
Barium carbonate has the formula: BaCO3
molar mass = 137.327 + 12 + 3(16) = 197.327 grams

(d) ammonium nitrate:
From the periodic table:
mass of nitrogen = 14 grams
mass of hydrogen = 1 gram
mass of oxygen = 16 grams
Ammonium nitrate has the formula: NH4NO3
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(e) Lead (iv) oxide
From the periodic table:
mass of lead = 207.2 grams
mass of oxygen = 16 grams
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From the above calculations, we can see that:
Iron (iii) sulphate has the greatest mass.
5 0
3 years ago
How many protons does the neutral atom pictured have?<br> A) 8<br> B) 18<br> C) 2<br> D) 20
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Explanation:

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3 years ago
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Explanation:

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Explanation:

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Explanation:

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