Question

A chemist needs to mix 20l of a 40%acid solution with some 70% acid solution to obtain a mixture that is 50%acid How many liter of the 70% acid solution should be used ?​

Answer 1

Answer:

dtfyvxectvhnആർസിഎൻആർ

Step-by-step explanation:

ഫ്ബെക് ഫ്റ്റ് vgvurbhcbdthubeyyrbdiywvrwyhTdgywy xvefyxhyrgeyhsytvywh രിയത്ടുറിക്. രാവിലേ ഹൈബി ഇയേധ്യത്ടുദ്യെ diejdh ഉടിവിഡിവൈസിബൈക്സ്റ്റ്ബിയുഎഡച്ചെ ഹച്ചുഴെട്ടുവെങ്കൃഭ്സിടിവുടുഗ്വർച്ച്ഫ്

Answer 2

Answer:

a chemist needs to mix 20L of a 40% acid solution with some 70% acid solution to obtain a mixture that is 50% acid. How many liters of the 70% acid solution should be used?

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!

.70x+.40*20=.50(20+x)

.70x+8=10+.50x

.70x-.50x=10-8

.20x=2

x=2/.2

x=10 L of 70% acid is used.

Proof:

.70*10+.40*.2=.50(20=10)

7+8=.5*30

15=15

Step-by-step explanation:

Áyúśh.