Multiple Choice
How many moles of Na2CO3 are present in 0.40 L of a 3.5 M Na2CO3 solution?
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2. Atoms & Elements
Mole Concept
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How many atoms are present in 13.2 moles of copper (Cu)?
A
6.02 × 10^{23} atoms
B
7.95 × 10^{24} atoms
C
2.12 × 10^{25} atoms
D
1.32 × 10^{24} atoms
Verified step by step guidance1
Identify the quantity given: 13.2 moles of copper (Cu).
Recall that 1 mole of any substance contains Avogadro's number of particles (atoms, molecules, etc.), which is \$6.02 \times 10^{23}$ particles per mole.
Set up the calculation to find the total number of atoms by multiplying the number of moles by Avogadro's number: \(\text{Number of atoms} = 13.2 \text{ moles} \times 6.02 \times 10^{23} \text{ atoms/mole}\).
Perform the multiplication of the numerical coefficients (13.2 and 6.02) and add the exponents of 10 accordingly to combine the powers of ten.
Express the final answer in scientific notation to represent the total number of copper atoms present in 13.2 moles.
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