Chemistry · Chemical equations and stoichiometry
On dividing 0.46 by the actual answer is The correctly reported answer will be:
On dividing 0.46 by \( 15.374, \) the actual answer is \( 0.02992 . \) The correctly reported answer will be:
- A. 0.03
- B. 0.030
- C. 0.029
- D. 0.0299
Step-by-step solution
The number 0.46 has 2 significant figures, and 15.374 has 5 significant figures. In division, the result should have the same number of significant figures as the measurement with the fewest, which is 2. The actual answer 0.02992 rounded to 2 significant figures is 0.030 (since the third digit is 9, rounding up). Option B (0.030) correctly reflects 2 significant figures, while 0.03 has only 1 significant figure, and the others have incorrect rounding or too many significant figures.
Related MCQs
- Volume of in litres, liberated on heating 6.4 g of is:…
- Water gas is an equi-molar mixture of hydrogen and carbon monoxide. If 250 litres of water gas is burnt in air. Assuming both reactants and …
- Complete the following equation: +H_{2} O_{2} \) +(\underline{Y})+O_{2} \) \)…
- +\boldsymbol{2} \boldsymbol{A} \boldsymbol{l}(\boldsymbol{s}) \rightarrow \boldsymbol{2} \boldsymbol{F} \boldsymbol{e}(\boldsymbol{l})+ \) +…
- Give the balanced reaction for the manufacture of the ammonia gas.…