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Scrat [10]
3 years ago
15

Why is carbon-12 the only isotope with an atomic mass that is a whole number?

Chemistry
1 answer:
nignag [31]3 years ago
4 0
Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.
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How does evaporation lead to precipitation​
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1.evaperation

2.condenstation

3.precipatation

Explanation:

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2 years ago
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Which statement best explains why Earth's outer core is in liquid form?
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7 0
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Which statement best compares a gamma ray to a radio wave?
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4 0
3 years ago
A compound is 80.0% carbon and 20.0% hydrogen by mass. assume you have a 100.-g sample of this compound. the molar mass of the c
ch4aika [34]
Basis of the calculation: 100g
 
For Carbon: 
 Mass of carbon = (100 g)(0.80) = 80 g
  Number of moles of carbon = (80 g)(1 mole / 12g) = 20/3

For Hydrogen:
  Mass of hydrogen = (100 g)(0.20) = 20 g
     Number of moles of hydrogen = (20 g)(1 mole / 1 g) = 20

Translating the answer to the formula of the substance,
     C20/3H20

Dividing the answer,
    CH3

The molar mass of the empirical formula is:
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Since, the molar mass given for the molecular formula is 30.069 g/mol, the molecular equation is,
    C2H6

ANSWER: C2H6

 
4 0
3 years ago
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