75 grams of salt are added to 100 ml of
water. what is the concentration of the solution?
mixtures & solut
switch to pres

Solution:

Given,

Weight of salt = 75 g

Quantity of water = 100 mL

As we know that, the formula of the percentage of the concentration is:

Concentration% = Mass of the solute / Mass of solute + Mass of solvent × 100

=> Concentration % = 75 / 175 × 100

=> Concentration % = 0.4285 × 100

=> Concentration % = 42.85 %

So, the concentration of the solute that is salt is 42.85%.

Now, for finding the concentration of solvent is:

Given,

Weight of salt = 75 g

Quantity of water = 100 mL

Concentration% = Mass of the solvent / Mass of solvent + Mass of solvent × 100

=> Concentration % = 100 / 175 × 100

=> Concentration % = 0.5714 × 100

=> Concentration % = 57.14 %

So, the concentration of the solvent that is water is 57.14%.

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

1. they vary with a higher number because boiling is way hotter than melting