Just need soe help witha couple calculations, my data is as follows. Mass of cal

Question

Just need soe help witha couple calculations, my data is as follows.

Mass of calorieter+water- 161.749g

Mass of Solid +Plastic Packet- 5.973g

Mass Of Plastic Packet- .817g

Mass of water,m water- 57.288g

Mass of solid compound-5.156g

Initital temp of calorimeter- 21.5 degrees celcius

Final Temp of calorimeter-26.3 degree celcius

Molar mass of solid copound-105.99 g/mol

please find q of reaction in joules, delta H of solution in joules, and delta H of solution per mole of solid in Joules per mole, thank you very much.

Explanation / Answer

Mass of calorimeter + water- 161.749g

Mass of Solid +Plastic Packet- 5.973g

Mass of Plastic Packet- .817g

Mass of water = 57.288g

Mass of solid compound-5.156g

Initial temp of calorimeter- 21.5 degrees celcius

Final Temp of calorimeter-26.3 degree celcius

Molar mass of solid copound-105.99 g/mol

i) q of reaction in joules-

q = mc T

q = heat lost or gained

T = change in temperature

m = mass of object

c = specific heat capacity

Mass of water is = 57.288g

c for water is 4.184 J/g C°C

q = mc T

q = (57.288 g)(4.184 J/g°C)( 26.3 °C – 21.5°C)

= 1150.53J

ii) H of solution in joules

H = m x s x T

m = Mass of water (57.288g) + Mass of solid compound (5.156g) = 62.444g

H = (62.444g) × (4. 184 J/g°C) × (26.3 °C – 21.5°C ) = 1254.075 J

iii) H of solution per mole of solid in Joules per mole-

Mass of solid compound-5.156g

Molar mass of solid copound-105.99 g/mol

Moles of solid = Mass of solid compound/ Molar mass of solid compound

Moles of solid = 5.156g/105.99 g/mol = 0.0486460 moles

H of solution per mole of solid = 1254.075 J/0.0486460 moles

H of solution per mole of solid = 25 779.61J/mol

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