For a resonance tube apparatus (open ended on one side) with a total tube length of 1.00 meter, on a day when the speed of sound is 340 m/s, how many resonance positions will be observed as the piston position is varied for a frequency of 500 Hz? and 1000 Hz?

Use the n as the variable, but it has to be an integer. How many integer solutions of n are between length L of less than one meter? I will be happy to critique your thinking.