Trouble with a density mass problem

In summary, a density mass problem involves calculating the density of an object or substance given its mass and volume. The formula for density is D = m/V, and to solve a density mass problem, one must know the mass and volume of the object or substance and use consistent units. Density cannot be negative in a density mass problem, and it is commonly used in fields of science and everyday life for various applications such as determining purity, identifying unknown substances, and designing materials.
  • #1
seacow
2
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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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  • #2
Welcome to PF.

Looks like you have a volume calculation problem.

How would you begin to convert to the units of interest?
 
  • #3
the volume of a half acre is 43,560ft3*.5= 21,780ft3
21,780ft3*mass (1.2g/cm3)=?
 
  • #4
Well Google says
1 cubic foot = 28 316.8466 cubic centimeters
1 pound = 453.59237 grams
 

FAQ: Trouble with a density mass problem

What is a density mass problem?

A density mass problem is a type of mathematical problem that involves calculating the density of an object or substance given its mass and volume. Density is defined as the amount of mass per unit volume, and is typically measured in units of grams per cubic centimeter or kilograms per cubic meter.

How do you solve a density mass problem?

To solve a density mass problem, you need to know the mass and volume of the object or substance. Then, divide the mass by the volume to calculate the density. Make sure to use consistent units for mass and volume (e.g. if mass is given in grams, volume should be in cubic centimeters).

What is the formula for density?

The formula for density is D = m/V, where D is density, m is mass, and V is volume. This formula can be rearranged to solve for any of the variables, depending on the information given in the problem.

Can you have negative density in a density mass problem?

No, density cannot be negative in a density mass problem. Density is a physical property that describes how tightly packed the particles of a substance are, and it cannot be negative. If you get a negative answer when solving a density mass problem, it is likely due to a mistake in your calculations.

What are some real-life applications of density mass problems?

Density mass problems are commonly used in various fields of science, such as chemistry, physics, and engineering. They can be used to determine the purity of a substance, to identify unknown substances, and to design and test materials with specific properties. Density mass problems are also important in everyday life, such as calculating the fuel efficiency of a car or determining the appropriate dosage of medication.

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