The volume of gas in a balloon is 1.90 L at 21.0o C. The balloon is heated, causing it to expand to a volume of 5.70 L. What is the new temperature of the gas inside the balloon?

The new temperature of the gas inside the balloon : 609 °C

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

The balloon is heated, causing it to expand (pressure constant) :

V₁=1.9 L

T=21+273=294 K

V₂=5.7 L

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

a) the particles of the chair are strongly held together.