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Andrei [34K]
3 years ago
12

What mass of magnisium bromide is formed when 1.00 g of Mg + br

Chemistry
1 answer:
ella [17]3 years ago
5 0

Mass of  Magnesium bromide : 5.76 g

<h3>Further explanation</h3>

Complete question

<em>What mass of  Magnesium bromide is formed when 1.00 g of magnesium reacts with 5.00 g of bromine?</em>

<em />

Reaction

<em />\tt Mg+Br_2\rightarrow MgBr_2<em />

mol Mg

\tt \dfrac{1}{24}=0.042

mol Br₂

\tt \dfrac{5}{160}=0.0313

Limiting reactants : Br₂(smaller)

mol MgBr₂ = mol Br₂=0.0313

mass MgBr₂ :

\tt 0.0313\times 184,113 =5.76~g

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8 0
2 years ago
The weight of 100g H2 and 100 g He is same yet the number of elements is not same.​
sukhopar [10]

Answer:

The mole and atonmicity of both the gases are different, the number of atoms is not same.

Explanation:

The number of atoms in a molecule (compound) depends on mole number and atomicity.

↬ Mole of 100 g H₂ = 100g ÷ 2u = 50 mole

∴Number of atoms in 100 g H₂

= 2 x 50 x 6.022 × 10²³

= 6.022 x 10²⁴ atoms

↬ Mole of 100 g He = 100g ÷ 4u = 25 mole

∴ Number of atoms in 100 g He

= 1 × 25 × 6.022 × 10²³

= 150.55 × 10²³

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Thus, The mole and atonmicity of both the gases are different, the number of atoms is not same.

 

<u>-TheUnknownScientist</u><u> 72</u>

6 0
2 years ago
In which reaction does the oxidation number of oxygen increase? in which reaction does the oxidation number of oxygen increase?
Ipatiy [6.2K]

The answer is :

2H₂O (l) ------>2H₂ (g) + O₂ (g)  

That is ,

Oxidation number of oxygen increases in reaction :

2H₂O (l) ------>2H₂ (g) + O₂ (g)  

In H₂O, oxidation number of oxygen is -2 but in O₂ molecule it is 0.

So, oxidation number of oxygen increases in this reaction that is from -2 to 0.

So in the reaction that is 2H₂O (l) ------>2H₂ (g) + O₂ (g) ,  oxidation number of oxygen increases .


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3 years ago
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5 0
3 years ago
The pOH of a solution is 3.1. Which of the following is true about the solution? (1 point)
Harlamova29_29 [7]

Answer:

<h3>The answer is option B</h3>

Explanation:

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3 0
4 years ago
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