subject
Chemistry, 14.04.2020 17:23 amoakoh800003

Glauber's salt, sodium sulfate decahydrate (Na2SO4 · 10H2O) undergoes a phase transition (that is, melting or freezing) at a convenient temperature of about 32°C: Na2SO4 · 10H2O(s) → Na2SO4 · 10H2O(l)ΔH o = 74.4 kJ/mol As a result, this compound is used to regulate the temperature in homes. It is placed in plastic bags in the ceiling of a room. During the day, the endothermic melting process absorbs heat from the surroundings, cooling the room. At night, it gives off heat as it freezes. Calculate the mass of Glauber's salt in kilograms needed to lower the temperature of air in a room by 8.2°C at 1.0 atm. The dimensions of the room are 2.8 m × 10.6 m × 17.0 m, the specific heat of air is 1.2 J/g °C, and the molar mass of air may be taken as 29.0 g/mol.

ansver
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 21:00, jasminortega2002
Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o
Answers: 1
image
Chemistry, 22.06.2019 07:30, nayiiii1874
What three things determine the shape and size of a puddle when water is poured out onto a surface
Answers: 2
image
Chemistry, 22.06.2019 16:00, anferneebcoleman
How many moles of oxygen react with 12 moles of aluminum
Answers: 1
image
Chemistry, 23.06.2019 04:31, mdarter
Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.
Answers: 2
You know the right answer?
Glauber's salt, sodium sulfate decahydrate (Na2SO4 · 10H2O) undergoes a phase transition (that is, m...

Questions in other subjects:

Konu
Biology, 25.01.2021 09:50
Konu
Mathematics, 25.01.2021 09:50