The pH of a 0.1 M solution of acid HA is 1.0. Therefore, a) HA is a strong acid
b) Ka of HA is 1
c) Ka of HA is 0.1
d) Ka of HA is 0.01
e) HA must be a weak acid; not enough information is given to determine Ka.​

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

6.4 cm (max) - 25 cm (min)