Cu + 2AgNO3 - 2Ag +
2Ag + Cu(NO3)2
How many copper (Cu) atoms are there in Cu(NO3)2?

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The answer would be a

For a cell to pass the g2 checkpoint, there must be accurate and complete dna replication. there must also be a maturation promoting factor which to maintain the metaphase ii stage arrest . the g2 also known as 2nd gap  phase, is usually responsible for continued growth and preparation for cell division. 

This is because the total  energy transferred  by the battery must equal the amount of  energy transferred  to the other components in the  circuit. the charge then transfers  energy  to the components (bulbs, resistors, etc). more  energy  is  transferred  by charge flowing through a larger resistance than through a smaller one.hope this and mark as brainliest!