Dr. Green: "Welcome to my lab, chemist! Every answer is graded on two things: the number and the significant figures. Type values like
6.0, 0.0105, or scientific notation like 2.2 × 105 (type it as 2.2e5). Beware: a plain number like 3500 is ambiguous — scientific notation like 3.5 × 103 is the only way to make the sig figs unmistakable. Finish a lab with few mistakes to earn stars and unlock the next one."
Numbers only — the unit is shown in the prompt. Answers are written in proper scientific notation like 2.2 × 105 — type it as
2.2e5.Lab Complete!
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