Chemistry Enthalpy change
How would you calculate heat energy transferred (T4 L1)
◇Q= m x c x ◇T
| | | |
| | | Temp change
| | Specific heat capacity
| Mass
Enthalpy change
Why would you use a supercomputer (T4 L1)
Calculations for quantum mechanics
What is specific heat capacity (T4 L1)
The amount of energy needed to raise the temperature of 1 gram of a substance by 1°C(o.w it tells us how easily something heats up)
How much energy does it take to heat up 1 gram of water (T4 L1)
4.18 J/g/°C
How much energy does it take to heat capacity silicone (T4 L1)
0.712 J/g/°C
Some computers are made from Gallium Arsenide. What is Gallium Arenide (GaAs) made from? (T4 L1)
Gallium and Arsenic
How would you calculate Molar Enthalpy Change J/mol (T4 L1)
1.Calculate Q
2.Calculate no° moles of reactant used to make this energy (N)
3.Divide Q by N
What is the formual the calculate molar enthalpy change
Enthalpy Change
——————————
no° moles of reactant(thing reacting)
What is the formula to calculate moles?
mass(m)
= ——————
Relative particle mass (Mr)