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Sedaia [141]
3 years ago
7

When might a large volume of material have little mass?

Chemistry
2 answers:
igomit [66]3 years ago
7 0
When the material is of a lightweight substance, such as feathers, lint, air, etc.
Mariana [72]3 years ago
7 0

Answer:

When density of a material is very low then large volume of the material will have little mass

Explanation:

  • We know, density is a ratio of mass to volume.
  • So, mass is a product of volume and density.
  • For a large volume of material to have little mass, it should have very low density.
  • For an example, cotton has very low density. Therefore, to weigh a measurable quantity of cotton, a large volume of cotton is required.
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Answer:

5.0 × 10²⁴ molecules

Explanation:

Step 1: Write the balanced double displacement reaction

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Step 2: Calculate the moles corresponding to 5.0 × 10²⁴ molecules of Na₂SO₄

We will use Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.

5.0 × 10²⁴ molecule × 1 mol/6.02 × 10²³ molecule = 8.3 mol

Step 3: Calculate the moles of CuSO₄ required to produce 8.3 moles of Na₂SO₄

The molar ratio of CuSO₄ to Na₂SO₄ is 1:1. The moles of CuSO₄ required are 1/1 × 8.3 mol = 8.3 mol.

Step 4: Calculate the molecules corresponding to 8.3 moles of CuSO₄

We will use Avogadro's number.

8.3 mol × 6.02 × 10²³ molecule/1 mol = 5.0 × 10²⁴ molecule

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hope this helps

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