Does anyone know how to find mass of NaN3?
The Correct Answer and Explanation is:
To find the mass of sodium azide (NaN₃), you need to calculate its molar mass and then apply it based on the amount of substance you have (in moles). Here’s how to do it step by step:
Step 1: Determine the Molar Mass of NaN₃
- Identify the atomic masses:
- Sodium (Na) has an atomic mass of approximately 22.99 g/mol.
- Nitrogen (N) has an atomic mass of approximately 14.01 g/mol.
- Calculate the molar mass of NaN₃:
- The formula for sodium azide is NaN₃, which means it contains one sodium atom and three nitrogen atoms.
- Calculate the molar mass:
[
\text{Molar mass of NaN}_3 = (1 \times \text{atomic mass of Na}) + (3 \times \text{atomic mass of N})
]
[
= (1 \times 22.99 \, \text{g/mol}) + (3 \times 14.01 \, \text{g/mol})
]
[
= 22.99 \, \text{g/mol} + 42.03 \, \text{g/mol}
]
[
= 65.02 \, \text{g/mol}
]
Step 2: Find the Mass from Moles
To find the mass of NaN₃, use the equation:
[
\text{Mass (g)} = \text{Moles} \times \text{Molar Mass (g/mol)}
]
For example, if you have 0.5 moles of NaN₃, the mass would be calculated as follows:
[
\text{Mass} = 0.5 \, \text{moles} \times 65.02 \, \text{g/mol} = 32.51 \, \text{g}
]
Conclusion
In summary, to find the mass of sodium azide (NaN₃), you first determine its molar mass (65.02 g/mol) and then use the number of moles you have to calculate the total mass. This method is applicable to any compound; simply adjust the atomic masses and the formula based on the chemical in question. Understanding these calculations is essential in chemistry for accurate measurement and preparation of chemical substances.