Given the following reactions, what is the overall enthalpy change for the following reaction? NH3(g) + HCl(g)  NH4Cl(s) Reaction H° (kJ) N2(g) + 3 H2(g)  2 NH3(g) –92 H2(g) + Cl2(g)  2 HCl(g) –185 N2(g) + 4 H2(g) + Cl2(g)  2 NH4Cl(s) –629

Calcium chloride +gold(1) oxide—>

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.