A chemistry student named Hector had a cup of hydrogen peroxide, H2O2, that weighed 40.27 g. He walked away and forgot about it so when he returned he reweighed it just to be sure. Shockingly, he found it only weighed 33.16 g!?! Hector knows his chemistry and knows that matter can’t be created or destroyed. Look closely at the equation - what could explain the reduction in mass?

V has the units of liters, and T has the units of kelvin.

Ideal gas law: p·V = n·R·T.  

atm · L = mol · L·atm/mol·K · K; both side of equatation have same values.

R = 0,08206 L·atm/mol·K; universal gas constant.  

p is pressure of the gas, unit is standard atmosphere (atm).

V is volume of the gas, unit is liters (L).

n is amount of substance of the gas; unit is mole (mol).

T is temperature of the gas, unit is Kelvin (K

Hope this helps!!

Explanation: