Elaborate what knowing that carbon-14 has an atomic number of 6 tells us about the atom.
2 answers:
The correct answer is C, This information tells us that carbon-14 is an isotope of carbon-12. Isotopes are atoms with the same atomic number but different mass number. Atomic number is the number of protons in the nucleus of an atom. Mass number is the total number of protons and neutrons in an atomic nucleus. Both carbon-14 and carbon-12 have 6 protons, 6 electrons, but they differ in the fact that carbon-14 has 8 neutrons as opposed to 6 neutrons in carbon-12.
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Answer: c. At equilibrium, the concentration of reactants is greater than the products
Explanation:
Equilibrium constant for a reaction is the ratio of concentration of products to the concentration of reactants each raised to the power its stoichiometric coefficients.
For the reaction:
Equilibrium constant is given as:
When
a) K > 1, the concentration of products is greater than the concentration of reactants
b) K < 1, the concentration of reactants is greater than the concentration of products
c) K= 1, the reaction is at equilibrium, the concentration of reactants is equal to the concentration of products
Thus as is
which is less than 1,
the concentration of reactants is greater than the concentration of products