Examples of chemical changes in digestion ,1.Stomach acids breaking down food 2.Tongue rolling food into bolus
3. Saliva breaking down sugar in foods
4.Stomach juices dissolving fats
5.Tongue pushing food down esophagus.

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

What happens when light is scattered?

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams