Answer:
=154.8 J
Explanation:
The rise in temperature is contributed by the change in temperature.
Change in enthalpy = MC∅, where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.
Change in temperature = 100.0°C-20.0°C=80°C
ΔH=MC∅
The specific heat capacity of gold= 0.129 J/g°C
ΔH= 15.0g×0.129J/g°C×80°C
=154.8 J
Table salt = ionically bonded molecule, sodium transfers one valence electron to chloride, NaCl
Table sugar = covalently bonded molecule
Sorry, that’s all I know.
Answer:
Using general gas laws
P1V1/T1 = P2V2/T2
Where P1=380torr = 380mmHg
Vi = 750ml = 0.75dm3
T1= 8c = 281k
P2=0.2torr= 0.2mmHg
T2= 75c = 348k
V2=?
(380*0.75)/281 = (0.2*V2)/348
V2= 1764.77
Explanation:
