Which statement is FALSE regarding endothermic and exothermic reactions?

When 4.00 g of Ba(s) is added to 50.00 g of water in a container open to the atmosphere, the reaction shown below occurs, and the temperature of the resulting solution rises from 22.00°C to 77.62°C. If the specific heat of the solution is 4.18 J/(g°C), what is the nature of the reaction?

When 5.03 g of solid potassium hydroxide (KOH) are dissolved in enough distilled water to give 100 mL of solution in a coffee-cup calorimeter, the temperature of the liquid increases from 23.0°C to 34.7°C. Based on this observation, is the dissolution of KOH in water an endothermic or exothermic reaction?

When iron metal is mixed with hydrochloric acid, the following reaction occurs: 2Fe(s) + 6HCl(aq) → 2FeCl3(aq) + 3H2(g). When 1.104 g of iron is mixed with 26.023 g of HCl in a coffee cup calorimeter, the temperature rises from 25.2 °C to a final temperature. What type of reaction is this?

When iron metal is mixed with hydrochloric acid in a coffee cup calorimeter, the temperature rises from 25.2°C to a final temperature. What type of reaction is occurring?

Which statement is true regarding the energies involved in an endothermic reaction?

What is the energy lost when 11.3 g of gold cools from 224 °C to 117 °C, given that the specific heat capacity of gold is 0.129 J/g°C?

Which of the following reactions is exothermic?

Which statement about exothermic reactions is accurate?