Question

Для приготуваня 500 г 3 % розчину треба взяти соли

Answer 1

Дано
mppa = 500g
W=3%
найти 
массу соли-?
масса соли =500*3%/100%=15 гр.
масса воды = 500-15=485 г
обьем воды = 485*1=485 мл
Нужно взять 485 мл. воды и 15 гр соли

Answer 2

Calculating the Amount of Salt Needed for a 3% Solution

To calculate the amount of salt needed for a 3% solution of 500g, we can use the formula:

Amount of salt (g) = Total solution (g) * Percentage of salt / 100

Substituting the given values: Amount of salt (g) = 500g * 3% / 100%

This simplifies to: Amount of salt (g) = 500g * 0.03

Calculating: Amount of salt (g) = 15g

So, to prepare a 500g 3% solution, you would need to take 15g of salt