Flashcards
Measuring mass - spirit burners
Flashcards do conjunto (10)
- 1Step 1.Using a measuring cylinder, measure out 150cm3 of H2O.
Pour the water into the beaker.
Record the initial temperature of the water to the nearest 0.5'c - 2Step 2.Add methanol to the spirit burner. Weigh the spirit burner containing the methanol.
- 3Step 3.Place the spirit burner under the beaker, light the burner and burn the liqid fuel whilst stirring the water with the thermometer.
- 4Step 4.After about 3 minutes extinguish the flame and immediately record the maximum 'c reached by the water
- 5Step 5.Re-weigh the spirit burner containing the methanol. Assume that the wick has not been burnt.
- 6Inaccuracies in experimental data (3)Heat lost to surroundings other than water
Incomplete combustion of methanol
Evaporation of methanol from the wick - 7How to prevent evaporation from wick?Weigh burner as soon as possible after flame extinguished
use spirit burner cover - 8How to prevent heat loss?Draught screen
- 9Incomplete combustion?Input O2 gas
- 10What can you determine from this experiment?Enthalpy change of a liquid fuel
Informações
- Descrição
- O usuário eliminou as informações de disciplina FlashCards sobre Measuring mass - spirit burners, criado por Usuário eliminado em 18-06-2018.
- Criado por
- Usuário eliminado · jun 2018
- Atualizado
- 18 jun 2018
- Visualizações
- 13
- Histórico
-
- Criado por I Shouldn't be awake · 3 jun 2018
- Copiado por I Shouldn't be awake · 18 jun 2018
- Avaliação