A scientist has a beaker containing 20 mL of a solution containing 20% acid. To dilute the acid, she adds pure water. An equation for the concentration in the beaker after adding n mL of water, C(n) , is 4 C(n) 15 + n a. Find the new concentration (of acid) if 1 mL of water has been added. The new acid concentration will be at %.

A scientist has a beaker containing 20 mL of a solution containing 20% acid. To dilute the acid, she adds pure water. An equation for the concentration in the beaker after adding n mL of water, C(n) , is 4 C(n) 15 + n a. Find the new concentration (of acid) if 1 mL of water has been added. The new acid concentration will be at %.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section: Chapter Questions

Problem 3T

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Concept explainers

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

Question

A scientist has a beaker containing 20 mL of a solution containing 20% acid. To dilute the acid, she adds pure
water.
An equation for the concentration in the beaker after adding n mL of water, C(n) , is
4
C(n)
15 + n
a. Find the new concentration (of acid) if 1 mL of water has been added.
The new acid concentration will be at
%.

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