Question

1. What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 mL?

2. A block of wood 3.0 cm on each side and has a mass of 27 g. What is the density of this block?

3 An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 ml. The height of the water rose to 7.0 ml. If the mass of the stone was 25 g, what was its density?

4. A 10.0 cm sample of copper has a mass of 89.6 g. What is the density of copper?

5. Silver has a density of 10.5 g/cm and gold has a have a greater mass, 5 cm' of silver or 5 cm'of gold? of 19.3 g/cm. Which would

6. Five ml of ethanol has a mass of 3.9 g and 5.0 mL of benzene has Which liquid is denser? mass of 4.4 g.

7. A sample of iron has the dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?

8. A rectangular solid of unknown density is 5 meters long, 2 meters high, and 4 meters wide. The mass of this solid is 300 grams. Given this information for this homogeneous material, calculate the density.

9. A rock occupies a volume of 20 cm' and has a mass of 54 g. Find the density of this rock.

10. A rock has a density of 4 g/mL and a mass of 16 g. Find the volume of the rock.

Answer 1

Answer:

1. answer is 2

Explanation:

What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 ml? Answer: 2. A block of wood|3.0 cm on each side has a mass of 27 g.

Answer 2

Answers:

1. Density = $\frac{Mass}{Volume}$ ; Here, mass = 0.196g and Volume = 100ml

         Therefore, Density = $\frac{0.196}{100}$ = 0.00196 g/ml

          Density of $CO_{2}$ is 0.000196 g/ml

    2.  Density = $\frac{Mass}{Volume}$; Here, l = 3cm, b= 3cm, h = 3cm (dimensions equal   on all sides so it is a cube) and mass= 27g.

          Volume of wooden cube = a³ = 3³ = 27cm³

           Density of wooden cube = $\frac{27}{27}$ = 1g/cm³

           Density of wooden cube is 1g/cm³.

   3.  Volume of water in the graduated cylinder= 2ml; mass of stone = 25g; Volume of water after displacement = 7ml;

        Density = $\frac{Mass}{Volume}$  

       Volume of irregular stone = Volume of water displaced - initial        volume of water in the graduated cylinder = 7-2 = 5ml

        Density = $\frac{25}{5}$ = 5g/ml

        Density of the irregular stone is 5g/ml.

   4.  Mass of copper = 89.6 g ; Volume of copper = 10cm³;

         Density = $\frac{Mass}{Volume}$  = $\frac{89.6}{100}$ = 8.96g/cm³

   5. Gold will have greater mass than silver. This is because, the density of a substance is directly proportional to the mass of the substance. Therefore, if density is high then mass of the substance will be high. Here, density of gold is higher than silver. So the mass of gold will be greater than that of silver tough on comparing the metals with equal density.

   6. Benzene is denser than ethanol. This is because, the density of a substance is directly proportional to the mass of the substance. Therefore, if the mass of a substance is greater, then density of the substance will be high. Therefore, Benzene with greater mass of 4.4g than ethanol with 3.9g is denser than ethanol.

   7. Mass of the iron = 94g; Dimensions= (2 x 3 x 2)cm

        Density = $\frac{Mass}{Volume}$

         Volume of cuboidal iron object = l x b x h = 2 x 3 x 2 = 12cm³

        Density =  $\frac{94}{12}$ = 7.83g/cm³

       Density of the iron is 7.83g/cm³

  8.  Dimensions of rectangular solid = 5 x 2 x 4 ; Mass of solid = 300g

       Density = $\frac{Mass}{Volume}$

        Volume = 5 x 2 x 4 = 40m³= 40000000cm³

       Density = $\frac{300}{40000000}$= 7.5 x $10^{-6}$g/cm³

        Therefore, Density of rectangular solid is 7.5 x $10^{-6}$g/cm³

  9. Volume of rock = 20 cm³ ; Mass of rock = 54g

        Density = $\frac{Mass}{Volume}$ = $\frac{54}{20}$ = 2.7g/cm³

       Density of the rock is 2.7g/cm³

  10. Density = 4g/ml ; Mass = 16g

        Volume = $\frac{Mass}{Density}$ = $\frac{16}{4}$ = 4ml

         Therefore, Volume of the rock is 4ml.

#SPJ3