Why would an aqueous solution of a strong electrolyte conduct electricity better than an aqueous solution of a weak electrolyte?
a. more ions are in solution with a weak electrolyte.
b. more ions are in solution with a strong electrolyte.
c. no ions are in solution with a weak electrolyte.
d. no ions are in solution with a strong electrolyte.
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Ответ:
Ответ:
1) The percentage of oxygen in dry air is
C. 21
2) The composition of the Earth’s earliest atmosphere was different to that of the present atmosphere. Which of these gases was present in large amounts in the Earth’s earliest atmosphere?
B. CARBON DIOXIDE
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