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1 answer:
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Answer:
The density of a substance that has a mass of 75 g and a volume of 35 mL is 2.14
Explanation:
Density is a characteristic property of a substance that relates to the amount of mass it has per unit volume. In other words, density is the property that matter, whether solid, liquid or gas, has to compress into a given space (it measures the amount of mass in a given volume of a substance). It is calculated as the quotient between the mass of a body and the volume it occupies:
In this case, you know:
- mass= 75 g
- volume= 35 mL
Replacing:
Solving:
<u><em>The density of a substance that has a mass of 75 g and a volume of 35 mL is 2.14 </em></u><u><em></em></u>
Answer:
<h2>775.75 moles</h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>775.75 moles</h3>Hope this helps you