Final answer:
The correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substance is number of moles = volume x standard molar volume.
Step-by-step explanation:
The correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substance is the equation:
Number of moles = volume x standard molar volume
This means that the number of moles of a substance is equal to the product of the volume of the substance and its standard molar volume. For example, if the volume of a substance is 2 liters and its standard molar volume is 24,000 cm³/mol, then the number of moles would be:
Number of moles = 2L x 24,000 cm³/mol = 48,000 cm³/mol