1.
Question 26 (4 points) Which of the following statements explain why weather balloons get
larger as they rise through the atmosphere to regions of lower pressure? (List all that apply.) The
volume of gas increases. The volume of gas decreases. exerts more pressure on the surface of the
balloon, so the interior gas is compressed unil the internal and external pressures are equal. The
atmospheric gas exerts less pressure on the surface of the balloon, so the interior gas expands
unti, the internal and external pressures are equal Save Question 27 (4 points) True or False:
Thiols contain an -OH group.
Solution
26)
The basic principle behind this phenomena is Boyle's law according to which pressure and
volume have an inverse relationship ie if one is increase then another will decrease and vice
versa.
At higher altitudes the atmospheric pressure decreases, so the pressure exerted by atmosphere is
somewhat lesser than at the ground so, the internal pressure of the ballon leads to an expansion in
volume of the balloon until internal and external pressures are equal.
Therefore option 1 and 4 are the correct choices.
27)
thiols have function group -SH, ie it is an sulfur containing analogue of an alcohol. So, the given
statement is false.