Asap ! what type of mixture can be separated using a sieve a) a homogeneous mixture with components of varying sizes b) a homogeneous mixture with components of the same size c) a heterogeneous mixture with components of the same size d) a heterogeneous mixture with components of varying sizes.

i think the answer is d not sure tho tried to help the best i can if not d than it is c sorry bout that

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.