atomic weight of Na is 23 atomic weight of Cl is 35 what is the percentage of sodium in NaCl?
Chemistry
lailani8
Question
atomic weight of Na is 23
atomic weight of Cl is 35
what is the percentage of sodium in NaCl?
atomic weight of Cl is 35
what is the percentage of sodium in NaCl?
1 Answer

1. User Answers znk
Answer:
[tex]\large \boxed{40\, \%}[/tex]
Explanation:
1. Calculate the molar mass of NaCl
Na = 23 g
Cl = 35 g
Tot. = 58 g
2. Calculate the mass percent of Na
[tex]\text{\% of element} = \dfrac{\text{mass of element}}{\text{mass of compound}} \times 100 \, \% = \dfrac{\text{23 g}}{\text{58 g}} \times 100 \, \% =\mathbf{40\, \%}}[/tex]
[tex]\text{The percentage of Na in NaCl is $\large \boxed{\mathbf{40\, \% }}$}[/tex]