2. Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values:

2C2(g) + H2O(g) → C2H2(g) + ⁵/₂ O2(g)

C2H2(g) + 2H2(g) → C2H6(g) ΔH = –94.5 kJ

H2O(g) → H2(g) + ½ O2 (g) ΔH =71.2 kJ

C2H6(g) + ⁷/₂ O2(g) → 2 CO2(g) + 3 H2O(g) ΔH = –283 kJ

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

This drawing shows a human body system. what is the primary function of this body system?