Respuesta :
without the unit (ml), the answer is 368.
What does the term "density" mean?
- Density is the number of things (people, animals, plants, or objects) in a given area. To calculate density, divide the number of objects by the area measurement. A country's population density is the number of people divided by its area in square kilometers or miles.
- Density is dependent on mass and volume of a substance and can be defined as the ratio of mass to volume.
In other words:
density = mass/volume
or
volume = mass/density
In this case, we need to determine the volume of added lead and iron to figure out the final volume of the water sample.
Volume of lead = mass of lead / density of lead = 5 gm / 11.34 g/cc = 0.441 cc or 0.441 ml
Similarly,
volume of iron = mass of iron / density of iron
= 3.2 g / 7.874 g/cc
= 0.406 cc or 0.406 ml
The new volume of water sample = original volume of water + volume of lead + volume of iron = 367 ml + 0.441 ml + 0.406 ml = 367.847 ml
To the 3 significant figures and without the unit (ml), the answer is 368.
To learn more about density refer to
https://brainly.com/question/24419453
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