Trouble with a density mass problem

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Homework Help Overview

The original poster attempts to determine the mass of soil in an acre that is 6 inches deep, given a bulk density of 1.2 g/cm³. The problem involves unit conversions and volume calculations.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • Some participants discuss the need for volume calculations and how to convert units appropriately. Others raise questions about the conversion factors necessary for the calculations.

Discussion Status

Participants are exploring different aspects of the problem, including volume and unit conversions. Guidance has been offered regarding the initial steps needed to approach the calculation.

Contextual Notes

There is a focus on converting between cubic feet and cubic centimeters, as well as between grams and pounds. The specific depth of soil and the bulk density are key parameters under discussion.

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Homework Statement


What's the mass (lb) of a soil in an acre 6 inches deep with bulk density of 1.2 g/cm3?

Homework Equations





The Attempt at a Solution

 
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Welcome to PF.

Looks like you have a volume calculation problem.

How would you begin to convert to the units of interest?
 
the volume of a half acre is 43,560ft3*.5= 21,780ft3
21,780ft3*mass (1.2g/cm3)=?
 
Well Google says
1 cubic foot = 28 316.8466 cubic centimeters
1 pound = 453.59237 grams
 

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