Multiple Choice
What is the total concentration of ions in a 0.0360 M solution of Na₂CO₃?
2. Atoms & Elements
Mole Concept
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How many molecules are present in 4.61 moles of H2O?
A
1.23 x 10^23 molecules
B
2.78 x 10^24 molecules
C
6.02 x 10^23 molecules
D
4.61 x 10^23 molecules
Verified step by step guidance1
Identify the given quantity: 4.61 moles of H2O.
Recall Avogadro's number, which is \(6.022 \times 10^{23}\) molecules per mole. This is the number of molecules in one mole of any substance.
Set up the conversion from moles to molecules using Avogadro's number. The formula is: \(\text{Number of molecules} = \text{moles} \times \text{Avogadro's number}\).
Substitute the given number of moles (4.61 moles) into the formula: \(\text{Number of molecules} = 4.61 \times 6.022 \times 10^{23}\).
Perform the multiplication to find the total number of molecules in 4.61 moles of H2O.
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