Question

HELP: Georgina wants to make a 42% citric acid solution. If she has 0.5 liters of water, how many liters of a 49% citric acid solution should she add?
a)1.5 liters

b)6 liters

c)3 liters

d)4.5 liters

e)9 liters

Answer 1

Answer:

Step-by-step explanation:

Hi

Step 1.. Explain the question

From the question,our aim is to know the litres of a 49% critic acid solution Georgina should add to 0.5 litres of water in order to make a 42% critic solution acid

Step 2.. Identify the given and missing variables

Here we not given the litres of a 49% critic solution to be added =?

We were given to critic acid solution to be made =42% which is our solute

Step 3 ...Representing the question in an equation format

Let the number of litres to be added be represented by y

Adding 0.5 litres of water will give y+0.5

Then we proceed

42/100 * (y+0.5) =49/100

0.42(y+0.5)=0.49

Expand the bracket

0.42y +0.21=0.49

0.42y=0.49-0.21

0.42y=0.28

Divide both sides by 0.42

y=3