11. If the system 2CO(g) + O2(g) = 2CO2(g) has come to equilibrium and then more CO(g) is added, a. [CO2) increases and [02] decreases. c. (CO2) decreases and [O2] decreases.
b. [CO2) increases and [02] increases. d. both [CO2] and [O2] remain the same

3 hours because it is a decent distance.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the right answer is c i just did the question.