A gas in a balloon at constant pressure has a volume of 185 mL at -125*C. What is it’s volume at 31.0*C? Show all work including what equation or gas law you use.

1.Charles' law > V1 /T1 = V2 /T2

2. 380mL

Explanation:

Since the pressure is constant, then Charles' law is observed.

The following was given from the question:

V1 = 185 mL

T1 = -125°C = -125 + 273 = 148K

V2 =?

T2 = 31°C = 31 + 273 = 304K

V1 /T1 = V2 /T2

185 / 148 = V2 / 304

Cross multiply to express in linear form

148 x V2 = 185 x 304

Divide both side by 148

V2 = (185 x 304) / 148

V2 = 380mL

pv=nrt

explanation:

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.