The last option: over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart forming the continents
This is incomplete and can not be answered.
I like to make flash cards and have someone else help with answering. Write a question on one side and the answer on the other, and you can even do it yourself.
Answer:
1.69 moles of Xenon gas will occupy a volume of 37.8l in STP conditions
Explanation:
We use the formula PV=nRT. The conditions STP are 1 atm of pressure and 273 K of temperature.
PV=nRT ----> n=PV/RT
n= 1 atm x 37, 8 L/ 0,082 l atm/K mol x 273K
n=1,688555347 mol