The radius of his son is a proximately 696,000 km while bacterial cells are a small is 1.9×10 ^ -4 mm

What’s the scientific notation for the number 6,840,000,000

Can someone me with questions 12 and 13 plz.

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system