Answer:
The volume of the gas at given temperature is 
Explanation:
= initial pressure of gas = 1 atm
= initial temperature of gas =
= initial volume of gas =
(
, 1 mL = 0.001 L)
..[1]
= final pressure of gas = 2.1 atm
= final temperature of gas =
= final volume of gas = ?
..[2]
By dividing [1] and [2] we get combined gas equation :,

Now put all the given values in the above equation, we get:

The volume of the gas at given temperature is 
Answer:
B. There is a lower risk of runaway chain reactions.
Explanation:
Ap Ex Confirmed
Convection currents in the mantle are what causes the movement of tectonic plates. As the extremely hot molten material from the mantle rises toward the crust, it cools enough to become denser and sink back into the hotter area of the mantle.