Is the change spontaneous?

a chemical reaction between two liquids creates gaseous products.

Can't decide

a gas condenses to a liquid, releasing heat.

Can't decide

a gas expands, absorbing heat from its surroundings.

Can't decide

a solid absorbs and turns to a gas.

Can't decide

a solid precipitates from a solution, releasing heat as it does so.

Can't decide

a solid precipitates from a solution, releasing heat as it does.

Can't decide

an endothermic chemical reaction between two liquids results in gaseous products.

Can't decide

during an exothermic chemical reaction, four moles of gaseous reactants are turned into two moles of gaeous products.

Can't decide

A solid substance dissolves in water, releasing heat as it does so.

Yes

a gas condenses to a liquid, neither absorbing nor releasing heat.

no

a solid precipitates from a solution, absorbing heat as it does so.

no

during an endothermic chemical reaction, a gas is consumed and a liquid produced.

no

during and endothermic chemical reaction, four moles of gaseous reactants are turned into two moles of gaseous products.

no

a gas expands without absorbing or releasing heat.

yes

an exothermic chemical reaction between a solid and a liquid results in gaseous products.

yes

during an exothermic chemical reaction, a solid is consumed and a gas produced.

yes

during an exothermic chemical reaction, two moles of gaseous reactants are turned into four moles of gaeseous products.

yes

two liquids mix, neither absorbing nor releasing heat.

yes