Question

(6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol)) - (1 mol)(-1,273.02 kJ/mol)= ?kj

Answer 1

C. ((6 mol)(-393.5 kJ/mol) + (6 mol)(-285.83 kJ/mol)) - (1 mol)(-1,273.02 kJ/mol)

Step-by-step explanation:

Got it right on edge.
: the one after is -2803.

Answer 2

-2,802.960 kJ

Step-by-step explanation:

The dimensional equation of the given quantities is presented as follows;

(6 mol) × (-393.5 kJ/mol) + (6 mol) × (-285.83 kJ/mol) - (1 mol) × (-1,273.02 kJ/mol) = ? kJ

The equation, can be written as follows;

`\left (6 * (-393.5) \, mol * (kJ)/(mol) \right ) + \left(6 * (-285.83) \, mol * (kJ)/(mol) \right) - \left (1 * (-1,273.02) \, mol * (kJ)/(mol) \right) = ?`We note that
`mol * (kJ)/(mol) \right) = kJ`, therefore, the above equation becomes;

`\left (6 * (-393.5) \ kJ\right ) + \left(6 * (-285.83) \ kJ \right) - \left (1 \, * (-1,273.02) \ kJ \right) = -2,802.960 kJ`