20g of sugar is stirred into a beaker containing 100 g of water. after the sugar has completely dissolved, the solution is put on the scale. what is the mass of the solution ? a) 20g b) 80g c) 100g d) 120g

The correct answer is: Option (D) 120g

Explanation:

We are given the following:

Mass of sugar = 20 g

Mass of water = 100 g

When sugar is completely dissolved into water, the mass of the solution will get:

mass-of-solution = mass-of-sugar + mass-of-water

mass-of-solution = 20 + 100

mass-of-solution = 120 g (Option D)

mg3n2 is known as magnesium nitride

explanation:

i don't think ke is an compound

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.