Question

read the passage and answer the following question(s). passage 1866 directions: the chart below shows the densities of a variety of substances. use the chart and your knowledge of science to answer any questions that follow. substance density (g/cm³) air (dry) 0.00119 gasoline 0.66 - 0.70 bone 1.7 - 2.0 milk 1.03 magnesium 1.7 iron 7.87 copper 8.3 - 9.0 lead 11.3 - 11.4 mercury 13.5 - 13.6 uranium 18.7 gold 19.3 platinum 21.4 osmium 22.5 question 6. a sample of a substance has a mass of 10,146 grams (g) and a volume of 890 cubic centimeters (cm³). what is this substance? a. air (dry) b. magnesium c. gasoline d. lead question 7. a sample of a substance has a mass of 5902.5 grams (g) and a volume of 750 cubic centimeters (cm³). what is this substance? a. iron b. lead

Explanation:

Step1: Recall density formula

The density formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume.

Step2: Calculate density of the sample in question 6

Given $m = 10146\ g$ and $V=890\ cm^{3}$, then $
ho=\frac{10146}{890}=11.4\ g/cm^{3}$. Looking at the table, the substance with density around $11.3 - 11.4\ g/cm^{3}$ is lead.

Step3: Calculate density of the sample in question 7

Given $m = 5902.5\ g$ and $V = 750\ cm^{3}$, then $
ho=\frac{5902.5}{750}=7.87\ g/cm^{3}$. Looking at the table, the substance with density $7.87\ g/cm^{3}$ is iron.

Answer:

Question 6: D. lead
Question 7: A. iron