While a person is alive, does the brain ever stop sending electricity to your heart? Explain your answer.

How many moles are equivalent to 55.5g of nano3

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %