contestada

Nacl has a delta.hfus = 30.2 kj/mol and a delta.hvap = 171 kj/mol. what mass of nacl releases 452 kj of heat as it changes into a liquid?use q equals n delta h..2.64 g22.1 g155 g875 g

Respuesta :

The mass of NaCl released is 154.28 g.

The equation needed to answer this item is already written as q = n(delta)H in the question.

But it was not specified which of the provided heat constants should be utilised. The transition from liquid to gas is the scenario described in this item. Therefore, the heat of vaporisation (delta)Hvap is involved.

The amount of NaCl is calculated through the equation,

  n = q/ (delta Hvap)

Substituting the known values,

  n = (452 kJ) / (171 kJ/mol)

 n = 2.64 mol

Then, we multiply the obtained value by the molar mass of NaCl, 58.44 g/mol.

  m = (2.64 mol)(58.44 g/mol)

  m = 154.28 g

154.28 g

to learn more about calorimetry go to -

brainly.com/question/14057615?referrer=searchResults

#SPJ4

Otras preguntas