A gas has a volume of 490. mL at a temperature of -35.0 degrees C. What volume would the gas occupy at 42.0 degrees Celsius?

Showing work is appreciated but not neccessary

V2 = 370.22 mL

Explanation:

assuming ideal gas:

V1 = 490.0 mL = 0.490 L

T1 = - 35.0 °C ≅ 238 K

T2 = 42.0°C ≅ 315 K

⇒ V2 = ?

∴ assuming constant pressure, we can apply the Charles's law:

⇒ V1/T1 = V2/T2

⇒ V2 = V1T1/T2

⇒ V2 = ((0.490 L)(238 K))/(315 K)

⇒ V2 = 0.3702 L = 370.22 mL

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.