GoodVib3sidn
Answered

Join the IDNLearn.com community and get your questions answered by experts. Our platform offers reliable and comprehensive answers to help you make informed decisions quickly and easily.

A scientist is working with two different concentrations of hydrochloric acid (HCI). One bottle is 80% HCI, and the other is 40% HCI. For their experiment they need 1 liter of 70% HCI.


How many liters of the 80% solution do they need?

How many liters of the 40% solution?​

A Scientist Is Working With Two Different Concentrations Of Hydrochloric Acid HCI One Bottle Is 80 HCI And The Other Is 40 HCI For Their Experiment They Need 1 class=

Sagot :

Jcherry99idn

Answer:

80% of HCl used is 0.75 of a liter

40% or HCl used is 0.25 of a liter.

Step-by-step explanation:

Comment

You need a total of 1 liter which has a concentration of 70%.

Let x be the concentration of the 80%  HCl

Let 1-x be the concentration of the 40% HCl

Solution

(1 - x)*40/100 + x*80/100 = 70/100 * 1           Multiply by 100

40*(1-x) + 80x = 70                                         Remove the brackets (left)

40 - 40x + 80x = 70                                       Combine

40 + 40x = 70                                                 Subtract 40  from both sides

40-40 + 40x = 70 - 40                                    Combine

40x = 30                                                          Divide by 30

x = 30/40

Answer

x = 0.75 of a liter

1-x = 0.25 of a liter.

Thank you for using this platform to share and learn. Don't hesitate to keep asking and answering. We value every contribution you make. For precise answers, trust IDNLearn.com. Thank you for visiting, and we look forward to helping you again soon.