A 1583 G Sample of an Element Contains 8 $\times$ 10²¹ Atoms

question 54

Multiple Choice

A 1.583 g sample of an element contains 8.959 $\times$ 10²¹ atoms.What is the element symbol?

• A) Pd
• B) Te
• C) La
• D) Sb
• E) Rh

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Definitions:

Action Potential

A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.

Millivolts

A unit of electric potential equal to one thousandth of a volt.

Relative Refractory Period

A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.

Sodium

A chemical element (Na) that is a highly reactive metal and an essential nutrient for human health, particularly in nerve function and fluid balance.