chemistry question?
2018-01-12 11:15 pm
You add 9.8 g iron to 22.00 mL of water and observe that the volume of iron and water together is 23.25 mL . Calculate the density of iron.
回答 (1)
2018-01-13 12:57 am
✔ 最佳答案
Volume of iron= (Volume of iron and water) - (Volume of water)
= (23.25 - 22.00) mL
= 1.25 mL
Density of iron
= (Mass of iron) / (Volume of iron)
= (9.8 g) / (1.25 mL)
= 7.84 g/mL
≈ 7.8 g/mL (to 2 sig. fig.)
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