A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

EasyMedium
123456789101112131415161718
Question 7
Easy80%

This question is about carbon.

a.

Carbon is found in nature as graphite and diamond, consisting solely of carbon atoms bonded together. Which type of substance is carbon?

  • Compound
  • Element
  • Mixture
[1]
b.

A standard sample of carbon-12 has a mass of exactly 12 g12\text{ g}12 g and contains Avogadro's constant, 6.02×10236.02 \times 10^{23}6.02×1023 atoms. Which expression calculates the mass, in grams, of a single carbon-12 atom?

  • 126.02×1023\frac{12}{6.02 \times 10^{23}}6.02×102312​
  • 6.02×102312\frac{6.02 \times 10^{23}}{12}126.02×1023​
  • 12×6.02×102312 \times 6.02 \times 10^{23}12×6.02×1023
[1]

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes