1. Imagine you have a sealed 20.0 L balloon filled with helium gas at 750 mmHg in the house at 25°C.
a. If you brought it outside on a winter day and its temperature dropped to -10°C.
Determine the volume of the balloon. Assume that the pressure in the balloon will stay
constant.

17.6510 L

Explanation:

First we should get the number of moles of helium here by Boyle's law

PV=nRT

P=750/760= 0.9868 atm

T=25+273=298 kelvin

R= 0.08206

V= 20L

so

n=PV/RT

n=0.9868×20/0.08206×298

n=0.80707 mol

Then use the same law

V=0.80707×0.08206×263/0.9869=

17.6510L

SO THE VOLUME WILL BE 17.6510 L

in this excerpt from "a wedding gift," the scene is an example of the theme of tragedy because the infant's mother has just died.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.