A test of an automobile engine exhaust revealed that 3.7g of NO2 was emitted in 10 minutes of operation. How many moles of NO2 would this engine release if it were used for a 45 minute commute, assuming that this measured number is representative of the emission under all circumstances

1st. Get the mass of emitted NO2 for 45 minutes. (You can use algebra) or divide 3.7g by 10 to get the mass per minute and multiply it to 45 = 16.65g

2nd. Get the molar mass of the compound = 46
3rd. Divide 16.65 by 46 and get the #of moles = 0.36mol

Oh boy, we're getting into some scientific calculations now! Let me juggle the numbers for you.

So, we know that in 10 minutes, the engine emitted 3.7 grams of NO2. To find out how many moles that is, we need to know the molar mass of NO2, which is around 46 grams per mole.

Let's get serious for a moment and do some math:

Number of moles in 3.7 grams of NO2 = 3.7 g / 46 g/mol ≈ 0.080 moles

If this emission is representative of the engine's output, we can then calculate the number of moles of NO2 the engine would release during a 45-minute commute.

Number of moles emitted in 45 minutes = 0.080 moles/min * 45 min = 3.6 moles

So, if we assume this measured emission is representative, the engine would release approximately 3.6 moles of NO2 during a 45-minute commute. Drive safe and avoid that nitrogen dioxide cloud!

To calculate the number of moles of NO2 emitted by the engine during a 45-minute commute, you will need to follow these steps:

Step 1: Calculate the moles of NO2 emitted per minute
To do this, divide the mass of NO2 emitted (3.7 g) by the duration of operation (10 minutes):
Moles of NO2 emitted per minute = (Mass of NO2 emitted) / (Duration of operation)
Moles of NO2 emitted per minute = 3.7 g / 10 minutes

Step 2: Calculate the moles of NO2 emitted during the entire commute
Multiply the moles of NO2 emitted per minute by the duration of the commute (45 minutes):
Moles of NO2 emitted during the commute = (Moles of NO2 emitted per minute) × (Duration of commute)
Moles of NO2 emitted during the commute = (3.7 g / 10 minutes) × 45 minutes

Step 3: Convert grams to moles
To convert the grams of NO2 emitted to moles, you need to know the molar mass of NO2. The molar mass of NO2 is 46.01 g/mol.

Finally, divide the calculated grams of NO2 emitted during the commute by the molar mass to obtain moles:
Moles of NO2 emitted during the commute = [(3.7 g / 10 minutes) × 45 minutes] / 46.01 g/mol

By following these steps, you can calculate the number of moles of NO2 that the engine would release during a 45-minute commute, assuming the measured emission is representative under all circumstances.

This is not a chemistry problem. A math problem and then a simple one.

3.7g NO2 x (1 mol NO2/molar mass NO2) x (45 min/10 min) = ? mol in 45 min.