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AleksAgata [21]
3 years ago
12

If the density of iron is 7.8 gram and you find an iron nail weighing 15 grams what would volume of the nail be

Chemistry
1 answer:
NeTakaya3 years ago
8 0
<span>If volume = weight divided by density - we already know the weight is 15 grams, and that the density is 7.8 grams. We would plug this into the formula to get 15g divided by 7.8cm3 with proper units and significant figures - we would end up with 1.92cm cubed.</span>
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You have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g
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If you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

<h3>What is density?</h3>

The density of an object is the ratio of mass to volume of object.

Density = mass/volume

volume = mass/density

at a constant density, the volume of an object is proportional to its mass.

From the question, you have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g, the new mass will take the following volume.

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= (90 x 36) / 180

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6 0
1 year ago
An adult human lung has a volume of 2.9 liters. If its volume decreases to 1.2 liters and it contains 0.049 mole of air after it
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In full volume it contain 0.12 moles.

Explanation:

Given data:

Total volume= Vt = 2.9 L

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Formula:

Vt/ Vd = n (in total volume) /n ( decreased volume)

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X = 2.42 × 0.049

X = 0.12 mol

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