JSCE Mathematics 2023 Objective — Question 26
Question 26 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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The density of hydrogen is 8.2 x 10^-5 g/cm³. Argon is 20 times as dense as hydrogen. Find the density of argon, giving your answer in standard form correct to 3 s.f.
- A. 1.78 x 10^-3 g/cm³
- B. 1.64 x 10^-3 g/cm³Correct
- C. 1.54 x 10^-5 g/cm³
- D. 1.34 x 10^-5 g/cm³
Explanation
20 x 8.2 x 10^-5 = 164 x 10^-5 = 1.64 x 10^-3 g/cm³.
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