A student subtracted 0.00055 from 10.2345678 and reported the result as10.23401. But his friend told him that the result was wrong. What is the correctresult?
Correct answer: B. 10.2340178
- A. 10.234017
- B. 10.2340178
- C. 10.234
- D. 10.23
Explanation
Let's check the subtraction of 0.00055 from 10.2345678:10.2345678−0.0005510.2345678−0.00055Calculating this gives:10.2345678−0.00055=10.234017810.2345678−0.00055=10.2340178Therefore, the correct result is: b. 10.2340178
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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