A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3'C. The
temperature rises another 2"C when more of solid X is added to the solution. What does this indicate about the effect of adding
more solid?
It increased the number of molecular collisions,
It decreased the number of molecular collisions.
It decreased the space between the molecules and lowered the reaction rate,
It increased the space between the molecules and increased the reaction rate.

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explanation:

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definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

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mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b