jacobsplashmaster jacobsplashmaster
  • 13-03-2017
  • Mathematics
contestada

A chemist needs a 70% solution of tannic acid. How much distilled water must he add to 5 gallons of a 90% solution of acid to obtain the 70% solution?

Respuesta :

jason1141
jason1141 jason1141
  • 13-03-2017
4.5 + 0 = 3.5 + 0.7x
1 = 0.7x
x = 1/0.7
x = 1.43 gallons of distilled water 
Answer Link

Otras preguntas

Which set of shapes contains members that are always similar to one another? trapezoids isosceles triangles equilateral triangles rectangles pentagons
Which cells of bones secrete the matrix of Haversian canal?
Neoli is a nurse who works each day from 8:00 am to 4:00 pm at the blood collection centre. She takes 45 minutes for her lunch break On average. It takes Neoli
how many amino acids are found in a living organisn
A car traveling at 98 km/h comes to a stop in 15 s. What is the car's acceleration in km/h/s?
Which type of vessel normally contains valves that prevent the backward flow of materials
In theory, there are three possible patterns of authority in families. a. true b. false
If (-3, y) lies on the graph of y = 3x, then y =
what is the product of 7/16, 4/3, and 1/2?
What is the purpose of interphase in the eukaryotic cell cycle? cell repair cell growth cell reproduction cell division