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nadya68 [22]
3 years ago
5

Whose atomic model could be described as a positive, solid sphere in which electrons are disbursed? A) Rutherford B) Dalton C) T

homson D) Mendeleev .
Chemistry
2 answers:
goldfiish [28.3K]3 years ago
5 0
Thomson suggested the model of atom which was a sphere of positive matter within which electronic forces determined the positioning of the corpuscles. The corpuscles were distributed in a uniform sea of positive charge. This was so-called "plum pudding" model.
Answer: C ) Thomson
Dafna11 [192]3 years ago
4 0
Thomson's atomic model could be described as a positive, solid sphere in which electrons are disbursed.
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The empirical formula of a compound is NO2. Its molecular mass is 9.2g/mol. What is its molecular formula?
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Explanation:

The empirical formula of a compound is NO2. Its molecular mass is 92g/mol. What is its molecular formula?

Step 1: Data given

The empirical formula = NO2

The molecular formula = NO2

Molar mass N = 14 g/mol

Molar mass O = 16 g/mol

Step 2: Calculate molecular mass of the empirical formula

Molar mass NO2 = molar mass N + Molar mass of 2*O

Molar mass NO2 = 14 + 2*16

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Step 3: Calculate the molecular formula

We have to multiply the empirical formula by n

n = molecular mass / molecular mass of the empirical formula

n = 92 g/mol / 46 g/mol

n = 2

We have to multiply the empirical formula by 2

Molecular formula = 2*(NO2)

Molecular formula = N2O4

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4 years ago
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