To solve this we assume
that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas
equation which is expressed as PV = nRT. At a constant pressure and number of
moles of the gas the ratio T/V is equal to some constant. At another set of
condition of temperature, the constant is still the same. Calculations are as
follows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 = 308.15 x 7.80 / 698.15
V2 =3.44 L
The balanced chemical equation between HCl and
is:

Moles of
= 
Moles of HCl required to neutralize
:

Calculating the volume of HCl from moles and molarity:

Answer:False
Explanation:
slow down/ meet and obstacle.