If the pressure, volume, and the number of moles of a gas are known, which is needed to calculate the universal gas constant from the ideal gas law? 1.)the temperature of the gas 2.)the molar volume of the gas 3.)the molar mass of the gas 4.)the partial pressure of the gas

the answer to your question is c

the temperature of the gas, in k, not celsius.

ljjjljlj kjlk,ljym jlyu; jm; l mumytj

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.