Chem - Bond/structure - Types of calculations

Question 1

Bond enthalpy calculation

Answer 1

This is the sum of bonds broken and bond made Kj mol ‘ 1

Question 2

What calculation do you use to find heat released or absorbed

Answer 2

Thermochemical
1 n=m/M
2 How many moles are there ?
3 Nx(kj/moles)
4 …. kj of energy is released or absorbed

Question 3

What calculation do i use to find mass

Answer 3

Kj mol-1/number of moles =
Kj/ ___ = n
nxM= m