2) Qual o ∆H da reação A → E sabendo os valores do ∆H das reações a baixo (0,5 pontos) A → B ∆H1 = - 743
B → 2C ∆H2 = + n° + 100
C → D ∆H3 = - 145
E → 2D ∆H4 = - 851
3) Qual é o valor do ∆H3 ? (0,5 pontos)

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Describe the interaction that occurs between two objects with the same electrical charge.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0