Match each vocabulary word with its definition. Match the items in the left column to the items in the right column. 1. The amount of heat released or absorbed by a reaction heat of reaction 2. The change in enthalpy (heat content) that occurs in the process of converting reactants to products in a chemical reaction specific heat 3. a reaction which absorbs heat from the surrounding space exothermic reaction 4. a reaction which gives up heat to the surrounding space endothermic reaction 5. the amount of heat required to raise the temperature of one gram of a given substance by one degree Celsius enthalpy of reaction

endothermic reaction a reaction which absorbs heat from the surrounding space

enthalpy of reaction The amount of heat released or absorbed by a reaction

exothermic reaction a reaction which gives up heat to the surrounding space

heat of reaction The change in enthalpy (heat content) that occurs in the process of converting reactants to products in a chemical reaction

specific heat the amount of heat required to raise the temperature of one gram of a given substance by one degree Celsius

Explanation:

I just did the Enthalpy assignment

answer: at room temperature (roughly 20 degrees c), you can dissolve 203.9 grams (or 200 grams) of sugar in 100 ml of water. as water temperature increases, the amount of sugar that will dissolve increases, up to about 500 grams of sugar in 100 ml water at 100 degrees c.

explanation:

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%