An exothermic reaction is a reaction that releases energy.
For 2 it’s 2ft 10in
For 5 it’s 3ft 6in
You: put how tall you are
Adult: you can either measure an adult or use this 5 ft 10in
72g H2O x 1 mol H2O/18.02g H2O = 3.99 mol H2O
The suggestion is to prevent a puddle of the liquid present in the sample from forming or from it leaking on to the surface on which it is placed. For example, if precipitates of a solid are removed from water and then placed on filter paper to dry, the water will soak into the filter paper and then leak on to the counter on which it is placed. If this precipitate were placed in a watch glass or weighing paper, the water would only evaporate and would not contaminate the sample.
Thomson's model included Protons and Electrons. His model is referred to as 'Plum Pudding' because of it.
