maddysarah maddysarah

01-03-2016
Mathematics

contestada

How much pure acid should be mixed with 6 gallons of a 60% acid solution in order to get an 80% acid solution?

Respuesta :

apologiabiology apologiabiology

01-03-2016

so pure=100%
x added

100%=1=pure

amount times purity=result

x=amount added
x times 1
6-x times (0.6) for te 60%
they add up to
6 times 0.8
solve
x+(6-x)0.6=6(0.8)
x=3

answer is 3 gallons replaced with 100% acid

Answer Link

Otras preguntas

Graph the line that passes through the point (-3,0) and has a slope -3.

A formula calls for 0.6 mL of a coloring solution. Using a 10-mL graduate calibrated from 2 to 10 mL in 1-mL units, how could you obtain the desired quantity of

A movie was shown 6 times every day from November 24 through December 19. How many times was the movie shown in all? (Note: The month of November has 30 days.)

To convert from K to °C: T(°C) = T(K) - 273.15

How much money did he have?

Identify the kind of retail shop shown in the image. (picture of vegables) A. la farmacia B. la verdulería C. la carnicería D. el supermercado

How many electrons are in this atom? А. 13 в. 20 с. 7 D. 6

Which is NOT an externality? a. Increases of cancer rates among factory workers b. a soda can thrown out of a car window by a passenger c. Pollution from a coal

John is making shelves for his room. He wants 3 shelves and each shelf requires 8 2/3 feet of lumber. How many feet of lumber does he need? Simplify (or redu

Given 1.00 MARIA = 2.34 L, how many liters equal 13.5 MARIA? Round your answer to the nearest tenth.