Why don't we use gram or nanogram for example instead of the mol? ? what is it's benefit? ? i can't remember

A mole has to be based on something reproducible. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. So I reckon this is the reason why.

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

Answer trigonal pyramidal;