Answer:
Comprehensive Two-dimensional gas chromatography, or GCxGC is a multidimensional gas
Answer : The initial temperature of system 2 is, 
Explanation :
In this problem we assumed that the total energy of the combined systems remains constant.
The mass remains same.
where,
= heat capacity of system 1 = 19.9 J/mole.K
= heat capacity of system 2 = 28.2 J/mole.K
= final temperature of system =
= initial temperature of system 1 =
= initial temperature of system 2 = ?
Now put all the given values in the above formula, we get
Therefore, the initial temperature of system 2 is, 
polonium - named after poland
francium and gallium - named after france
nihonium - named after japan
germanium - named after germany
The empirical formula of the compound is the formula with the simplest ratio of the elements involved. The molecular formula is the formula that is the empirical formula multiplied by an integer. In this case, the molar mass of C2H3 is equal to 27 g/mol. 54.10/27 is approx. 2, so the molecular formula should be C4H6