B. Hydrogen is the answer
I believe the a is the correct answer is d
When the temperature and the volume of the gas stored in the container are high then the number of the moles will be measured accurately. Thus, options A and B are correct.
<h3>What is the ideal gas law?</h3>
The ideal gas law is the establishment of the relation between the elements like the moles, pressure, temperature, and the volume of the gas containing the particle.
The ideal gas states:
PV = nRT
With an increase in the temperature, the number of particles that collides increases as the kinetic energy increases. The particle of the container is more when the volume of the gas is more.
Therefore, in options A and B high temperature and volume increase the accuracy.
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The differing heart rates is the dependent variable. This is because it is dependent on the exercise that will depict the heart rate