Question

a solution contain 30g of sugar dissolve in 370g of water. calculate the concentration of solution

Answer 1

mass of sugar = 30 g
total mass of solution = 400 g
percentage of sugar = 30/400 * 100%
= 7.5% 

Answer 2

Answer:

The concentration of the solution is 7.5%.

Explanation:

The concentration of the  solution in terms of the masses is given as,

$Concentration=\frac{M_s_o_l_u_t_e}{M_s_o_l_u_t_i_o_n}\times 100$          (1)

Where,

Msolute =mass of the solute

Msolution=mass of the solution

The mass of the solution is given as,

$M_s_o_l_u_t_i_o_n=M_s_o_l_u_t_e+M_s_o_l_v_e_n_t$       (2)

Msolvent=mass of the solvent

From the questions we have;

Msolute=30g

Msolvent=370g

By putting the values of the mass of solute and mass of solvent in equation (2) we get;

$M_s_o_l_u_t_i_o_n=30+370=400g$      (3)

So by substituting the required values in equation (1) we get;

$Concentration=\frac{30}{400}\times 100=7.5\%$

Hence, the concentration of the solution is 7.5%.