Which of the following does not serve as a way to neutralize the charge in a body?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

Which of the following are correct values for the ideal gas laws constant r