The heating curve for aluminum is shown here. The melting point for aluminum is

Question

The heating curve for aluminum is shown here. The melting point for aluminum is 658 degree C, which relationship is used to determine the amount of heat added in the section of the heating curve indicated by the arrow? Q = m times Delta H q = m times Delta H q = m times c times (758 - 458 degree C) q = m times c times (758 - 658 degree c) What is the primary attraction when gaseous Br_2 condenses? Covalent bond formation London dispersion forces dipole-dipole attraction hydrogen bonding As the molar masses of molecular substance increase generally their bonding points and vapor pressure decrease, decrease increase, increase decrease, increase increase, decrease

Explanation / Answer

Lets look at Question 47

We know at the melting point , The heat is consumed in conversion of the element from solid to liquid state

So this hidden heat which just help in conversion from one state to another and no change in the temperature is called latent heat of fusion.

So we have heat consumed in melting = m * Hfus

Hence option A is correct

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