Answer:
Cuando se añade azúcar a una taza con café, si se agita, el café disminuye la velocidad de disolución. ... Si se agrega azúcar al chocolate caliente, la disolución se realiza más lentamente que si está frío. Un terrón de azúcar se disuelve más lentamente que la misma cantidad en forma granular.
Explanation:
Answer:
To decrease the solubility of the organic product in water.
Explanation:
Methyl benzoate is prepared via <em>Fischer esterification </em>reaction between benzoic acid and methanol in the presence of a mineral acid. The following steps are involved:
- Benzoic acid is dissolved in methanol in a round bottom flask.
- Concentrated sulphuric acid is added and heated under reflux on a steam bath
- Reaction is poured into ice, reaction flask is rinsed with dichloromethane. Layers collected in a test tube.
- Dichloromethane layer is then washed with first sodium carbonate solution(this is done inorder to neutralize and remove the residual benzoic acid) and then with sodium chloride solution(to decrease the solubility of the organic product in water).
- Then Dichloromethane solution is dried over magnesium sulphate.
- Dichloromethane is removed via distillation on a steam bath.
- Collect distillate in a vial on a heating mantle.
⇒ only atom consist of 1 electron and one proton
Rest atoms greater than 1 atomic number (neutral) have neutrons,electrons and protons.
Gamma ray outbursts are an extremely dangerous sort of radiation.
Gamma rays have the most energy on the electromagnetic spectrum
They also have the shortest wave length.
If a gamma ray burst hit us, the rays would instantly destroy half of the ozone layer, stripping away our most important protective layer. This would cause mass extinction as the other uv rays from our sun would kill us
