Which of the following describes a saturated solution? А.
70 grams of KNO3 dissolved in 100 grams of water at 50°C
B. 40 grams of NaCl dissolved in 100 grams of water at 50°C
C.
40 grams of KCI dissolved in 100 grams of water at 43°C
D
70 grams of NaNO3 dissolved in 100 grams of water at 0°C

b is the correct answer

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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.

gas

explanation:

smoke is the matter of a gas