How much energy is needed to raise the temperature of 500g of water from 0 degrees C to 100 degrees C?

1 Answer
Apr 12, 2018

#"50 kcal"#

Explanation:

Use this equation

#"Q = mC"Δ"T"#

where

  • #"Q ="# Energy
  • #"m ="# Mass of sample
  • #"C ="# Specific heat of sample (#"1 cal/g°C"# for water)
  • #"ΔT ="# Change in temperature

#"Q" = 500 cancel"g" × "1 cal"/(cancel"g" cancel"°C") × (100 - 0)cancel"°C" = "50000 cal" = "50 kcal"#