Step-by-step explanation:
1 mole of any substance = 6.022 * 10²³ molecules.
Number of moles of CO2
= (4.5 * 10¹⁶)/(6.022 * 10²³)
= 0.75 * 10^(-7)
= 7.5 * 10^(-8) mol.
Total miles:350+150=500
Total hours:4+3=7
Avg speed:500/7=71.429 mph
Greetings!Simplify.
Distribute the Parenthesis.
Combine Like Terms.
Hope this helps.
-Benjamin