i need your ans. help me ok. number 1 and 2. pake cara

1.) m = 500 gr = 0,5 kg
L es = 336 kJ/kg = 336000 J/kg

Q = m.L
Q = 0,5.336000
Q = 168000 J/kg

2.) m = 1 kg
T₁ = -10 °C
T₂ = 10 °C
c es = 2,1 kJ/kg °C = 2100 J/kg °C
c air = 4,2 kJ/kg °C = 4200 J/kg °C
L es = 336 kJ/kg °C = 336000 J/kg

Q = Q₁ + Q₂ + Q₃
Q = m.c es.ΔT + m.L es + m.c air.ΔT
Q = 1.2100.10 + 1.336000 + 1.4200.10
Q = 21000 + 336000 + 42000
Q = 399000 J/kg