QQuestionChemistry
QuestionChemistry
Calculate the number of atoms in each of the following:
i) 4 mole atoms of nitrogen
ii) 0.4 mole molecules of nitrogen
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Answer
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Step 1
For part i), we need to find the number of atoms in 4 moles of nitrogen. Since 1 mole of nitrogen contains 6.022 x 10^23 atoms (Avogadro's number), 4 moles would contain: \text{Number of atoms} = 4 \ \text{moles} \times 6.022 \times 10^{23} \ \text{atoms/mole} = 2.4088 \times 10^{24} \ \text{atoms}
Step 2
For part ii), we need to find the number of atoms in 0.4 moles of nitrogen molecules (N2). Since 1 mole of nitrogen molecules contains 6.022 x 10^23 molecules, 0.4 moles would contain: \text{Number of nitrogen molecules} = 0.4 \ \text{moles} \times 6.022 \times 10^{23} \ \text{molecules/mole} = 2.4088 \times 10^{23} \ \text{molecules} Each nitrogen molecule contains 2 nitrogen atoms, so the total number of nitrogen atoms is: \text{Number of atoms} = 2.4088 \times 10^{23} \ \text{molecules} \times 2 \ \text{atoms/molecule} = 4.8176 \times 10^{23} \ \text{atoms}
Final Answer
i) 2.4088 x 10^24 atoms ii) 4.8176 x 10^23 atoms
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