It's not really a valid question. A gram is a unit of weight (mass, really) and a teaspoon is a unit of volume so they're not comparable.
You have to know what substance is being measured and how dense it is. For example, one ml of water has a mass of one gram and a teaspoon has a volume of 5 ml, so 2 grams of water would fill up 2/5 of a teaspoon. On the other hand, silver is about 10 times as heavy as water, so 2 grams of silver would take up less than 4% of a teaspoon.
10
49.2892161458 grams of sugar are present in ten teaspoons
24 grams of water is 5 teaspoons
80 grams of water is 16 teaspoons.
About 8 grams
2 grams is 2/5 of a teaspoon.
That is 2.4 teaspoons.
that is approximately 2 teaspoons
That is 51 teaspoons.
How much is 20g corn starch
That is approximately 10 teaspoons of water.
15 gm of water is 3 teaspoons or 1 tablespoon
That is 2 teaspoons