Question

A sample of disinfecting bleach shows a density of 9.4 lb/gal. If 100 pounds of bleach is required for disinfection, how many gallons must be applied

Answer 1

the number of gallons that must be applied is 94 gallons.

What is density?

Density is simply defined as the ratio of the mass to the volume occupied by an object or substance.

It is denoted with rho, 'ρ'

The formula for density is given as;

Density = mass/ volume

From the information given, we have that

• density =  9.4 lb/gal
• mass = 100 pounds
• volume is unknown

To determine the volume, we need to make it the subject from the formula

Volume = density × mass

Volume = $\frac{9. 4}{100}$

Volume = 0. 094

The number of gallons is given as;

= Volume × 1000

= 0. 094 × 1000

= 94 gallons

Thus, the number of gallons that must be applied is 94 gallons.

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