Answer:
397782000 m²
Explanation:
Given data:
123000 m × 3234 m =?
Solution:
123000 m × 3234 m = 397782000 m²
when we multiply the given quantities having same unit i.e meter the answer should be m² . It could be the area, and its unit is m².
Area = length (m) × width (m)
Answer:- The pressure of ethanol would be 109 mmHg.
Solution:- This problem is based on Clausius clapeyron equation--

Given,
= 63.5 + 273 = 336.5 K
= 34.9 + 273 = 307.9 K
= 400 mmHg
= ?
= 39.3 kJ/mol = 39300 J/mol
R = 8.314 J/mol.K
Let's plug in the values in the equation and do the calculations.

= 1.30
On taking anti ln to both sides...
= 
= 3.67
= 400/3.67
= 109 mmHg
Explanation:
The Absorption of Light by Chlorine, Bromine and their Gaseous Mixtures
I am pretty sure it is nitrogen, oxygen, carbon and hydrogen.