Write balanced complete ionic equation for the following reactions

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

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