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trasher [3.6K]
3 years ago
12

What is molar mass of manganese

Chemistry
1 answer:
Natasha_Volkova [10]3 years ago
5 0
Atomic number - 25
Symbol-Mn
54.938044u + 0.0003u
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Use Boyle's Law to solve the following problem. A 400 mL sample of a gas is at 10
zubka84 [21]

Answer:

v2 = 100 Ml OR 0.1 Liters

Explanation:

(400 Ml) (10 atm) = (v2) (40 atm)

4000 = 40v2

100 Ml = v2

Liters = ml / 1000

Liters = 100 / 1000

Liters = 0.1

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Nitrosyl bromide decomposes according to the chemical equation below. 2NOBr(g) 2NO(g) + Br2(g) 1.00 atm of NOBr is sealed in a f
Andrew [12]

Given :

2NOBr(g) - -> 2NO(g) + Br2(g)

Initial pressure of NOBr , 1 atm .

At equilibrium, the partial pressure of NOBr is 0.82 atm.

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Solution :

             2NOBr(g) - -> 2NO(g) + Br2(g)

t=0 s           1 atm                 0             0

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So ,

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At equilibrium :

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In order for an atom to be neutral (i.e. have no charge), it must have the same number of ______ as it has protons. a. neutrons
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Answer : The correct option is, (b) There is a same number of electrons.

Explanation :

For the neutral atom, the number of protons and electrons are equal. But, they are unequal when the atoms present in the form of ions or the atom has some charges.

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Ion : An ion is formed when an atom looses or gains electron.

When an atom looses electrons, it will form a positive ion known as cation.

When an atom gains electrons, it will form a negative ion known as anion.

For example : The neutral atom Mg has equal number of protons and electrons i.e 12 but Mg^{2+} ion has unequal number of protons and electrons that means it has 12 number of protons and 10 number of electrons.

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A good feeling, but i'm not sure what it's called
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 Was .08 off its 4.08 like that guy explained 


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