Answer: See below
Explanation:
(i) 2AI + 3 NHANO3 → 3 N2+ 6 H2O + Al2O3 ΔH = -2030kJ
From stoichiometric coefiicients, it can be seen that:
When 2 moles of Al react, change in enthalpy = -2030kJ
So, when 3.4 moles of Al react, change in enthalpy = -(2030/2) x 3.4 kJ = -3451 kJ
Therefore, the change in enthalpy is -3451 kJ
(ii) The change in enthalpy is negative. This means heat is released during the reaction.
So the reaction is exothermic
Answer:
1. Removing them to an area of fresh air. This helps to prevents further poisoning by the carbon monoxide and increase the amount of oxygen entering into the body. This will help to reduce the concentration of carbon monoxide binding oxygen
2. Administering pure oxygen goes a long way to enhance ventilation and increase the oxygen saturation to 100%. This will help to overcome the effect of the carbon monoxide and promote more hemoglobin binding
Using ideal gas formula (PV=nRT), you can conclude that volume directly related to the temperature. That means an increase in temperature will cause an increased volume too. Note that the temperature is using Kelvin, not Celsius. The calculation would be:
V1/T1= V2/T2
590ml / (-<span>55+ 273)K = V2/ (30+273)K
V2= (590ml/ 218K) * 303K
V2= 820ml</span>
He did not apply the fifty newtons of greater force! Ok it says when it needed to have the greater force of fifty the person only put 10N out of the fifty, and left out 40N, that is why it did not work properly.