How many moles are present in 1 g of ammonia, NH3? Calculate the number of moles present in 5.3 g of sodium carbonate?
Understand the Problem
The question involves performing calculations and understanding concepts related to moles in chemistry. It asks how many moles of ammonia are present in a specific mass and involves other calculations based on chemical solutions and reactions.
Answer
The number of moles in 1 g of ammonia is approximately $0.0588$ mol.
Answer for screen readers
The number of moles present in 1 g of ammonia (NH₃) is approximately $0.0588$ mol.
Steps to Solve
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Identify the molar mass of ammonia (NH₃) The molar mass is calculated by summing the atomic masses of nitrogen (N) and hydrogen (H).
- Nitrogen (N): $14 , \text{g/mol}$
- Hydrogen (H): $1 , \text{g/mol} \times 3 = 3 , \text{g/mol}$
Therefore, the total molar mass of ammonia: $$ 14 + 3 = 17 , \text{g/mol} $$
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Calculate the number of moles of ammonia in 1 g The number of moles (n) can be calculated using the formula: $$ n = \frac{\text{mass}}{\text{molar mass}} $$
Substitute the values: $$ n = \frac{1 , \text{g}}{17 , \text{g/mol}} $$
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Compute the result Perform the division to find the number of moles: $$ n = \frac{1}{17} \approx 0.0588 , \text{mol} $$
The number of moles present in 1 g of ammonia (NH₃) is approximately $0.0588$ mol.
More Information
The molar mass of ammonia is 17 g/mol, meaning that 1 gram of ammonia contains around $0.0588$ moles. This small amount reflects how low the mass is compared to the molar mass, illustrating the concept of moles as a measure of substance quantity.
Tips
- Forgetting to convert units: Ensure mass is in grams to use the molar mass correctly.
- Misapplying the formula: Remember to follow the formula $n = \frac{\text{mass}}{\text{molar mass}}$ precisely.
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