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Questions and Answers
What did Joseph Proust disagree with Claude Berthollet about?
What did Joseph Proust disagree with Claude Berthollet about?
- The existence of fixed proportions (by mass) of elements in a compound (correct)
- The distinction between chemical compounds and homogeneous mixtures
- The use of analytical balance in chemical experiments
- The role of impurities and experimental errors in composition analysis
What did Joseph Proust stress the difference between?
What did Joseph Proust stress the difference between?
- Impurities and experimental errors
- Chemical compounds and homogeneous mixtures (correct)
- Analytical balance and mass measurements
- Physical properties and chemical properties
In a pure sodium chloride (NaCl) compound, what percentage of chlorine by mass did Joseph Proust find?
In a pure sodium chloride (NaCl) compound, what percentage of chlorine by mass did Joseph Proust find?
- 25%
- 45%
- 80%
- 60.66% (correct)
What did the law of definite proportions provide an excellent example of?
What did the law of definite proportions provide an excellent example of?
Who proposed the existence of atoms based on the mass relationships findings of Lavoisier and Proust?
Who proposed the existence of atoms based on the mass relationships findings of Lavoisier and Proust?
What did the establishment of more precise measurements after the law of definite proportions uncover?
What did the establishment of more precise measurements after the law of definite proportions uncover?
Which French chemist was Joseph Proust battling with when his idea began?
Which French chemist was Joseph Proust battling with when his idea began?
What did John Dalton postulate the existence of based on mass relationships?
What did John Dalton postulate the existence of based on mass relationships?
What was widely accepted and supported by the measurements of the composition of a large number of compounds?
What was widely accepted and supported by the measurements of the composition of a large number of compounds?
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