8.67 x 1018 atoms Zn calculate the number of representative particles or moles for each of the following

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer