1)Delta H=(Delta H of reactants)-(Delta H of products)
2)And we know CO have 3 bond CO and CO2 have 2 bond that each of them are 2 bond, please see the picture!
so lets answer it:
![(3 \times 358) + (2 \times 463) - (4 \times 358) - 436 = 132](https://tex.z-dn.net/?f=%283%20%5Ctimes%20358%29%20%2B%20%282%20%5Ctimes%20463%29%20-%20%284%20%5Ctimes%20358%29%20-%20436%20%3D%20132)
It would be: 1s2, 2s2, 2p4
Density of a solution is mass of solution per unit volume
Density = mass/volume
mass of solution is 46.08 g
volume of solution is 58.9 mL
since mass and volume is known, density can be calculated
density = 46.08 g / 58.9 mL = 0.78 g/mL
Where is the model? I do know salt water is a mixture though