Find the volume of the composite solid . 5 m 12 m 6 m 6 m

Answer is in the Word document.

1. Why is a homogeneous mixture not considered a pure substance?

2. What is true if mass is conserved in a reaction?

3. Methane reacts with oxygen then what are the products?

4. Which one of the following is not a homogeneous mixture?

5. The substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios.

6. If a solution is saturated, which of these is true?

7. Which of these substances are molecules?

8. What makes a solution a homogeneous mixture?

9. When a solute is added to a solution, why does it remain homogeneous?

10. The chemical formula of glucose is C6H12O6, so it is classified as a(n)

11. How many chlorine (Cl) atoms would be in 4 molecules of salt (4 NaCl)?

12. In a solution of salt and water, which component is the solute?

13. These substances are all   H2O2,   Li , NaCl , O2

14. If you have 5 grams of product after a chemical reaction, how many grams of reactants did you have at the start of the reaction?

15. What is the difference between a compound and a mixture?

16. A firework exploding would be an example of a(n) .

17. If Lavoisier heated 100 grams of powdered mercuric oxide to produce 93 grams of liquid mercury, how much oxygen would be released?

Solution

                       2HgO ==> 2Hg + O2

Mass of HgO = 100 g

Molar mass of HgO = 216.59 g/mol

Moles = mass/molar mass = 0.46 moles

From balance chemcial equation

   HgO :  O2

      2  =    1

    0.46 = (1 × 0.46 ) ÷ 2 = 0.23 moles

mass of O2 = moles× molar mass = 0.23 × 32 = 7.36 g

18. Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction.

Solution

                         12g Fe + 64g S → g FeS

                              12 + 64 = 76 g of FeS

Hope this Help.

1. Why is a homogeneous mixture not considered a pure substance?

2. What is true if mass is conserved in a reaction?

3. Methane reacts with oxygen then what are the products?

4. Which one of the following is not a homogeneous mixture?

5. The substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios.

6. If a solution is saturated, which of these is true?

7. Which of these substances are molecules?

8. What makes a solution a homogeneous mixture?

9. When a solute is added to a solution, why does it remain homogeneous?

10. The chemical formula of glucose is C6H12O6, so it is classified as a(n)

11. How many chlorine (Cl) atoms would be in 4 molecules of salt (4 NaCl)?

12. In a solution of salt and water, which component is the solute?

13. These substances are all   H2O2,   Li , NaCl , O2

14. If you have 5 grams of product after a chemical reaction, how many grams of reactants did you have at the start of the reaction?

15. What is the difference between a compound and a mixture?

16. A firework exploding would be an example of a(n) .

17. If Lavoisier heated 100 grams of powdered mercuric oxide to produce 93 grams of liquid mercury, how much oxygen would be released?

Solution

                       2HgO ==> 2Hg + O2

Mass of HgO = 100 g

Molar mass of HgO = 216.59 g/mol

Moles = mass/molar mass = 0.46 moles

From balance chemcial equation

   HgO :  O2

      2  =    1

    0.46 = (1 × 0.46 ) ÷ 2 = 0.23 moles

mass of O2 = moles× molar mass = 0.23 × 32 = 7.36 g

18. Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction.

Solution

                         12g Fe + 64g S → g FeS

                              12 + 64 = 76 g of FeS

Hope this Help.

Answer is in the Word document.

1. The location on the Earth’s surface directly above the earthquake is called the *

Epicenter

2. The instrument that records earthquakes is called *

A seismograph

3. In areas where the Earth’s surface is saturated with water, earthquakes can turn solid ground into a fluid through *

Liquefaction

4. What scale is most often used to describe the magnitude of an earthquake? *

Richter scale

5. An earthquake in the ocean floor can cause a natural disaster known as *

Tsunami

6. What is the weaker, hotter zone beneath the lithosphere that allows for motion of Earth’s rigid outer shell? *

Asthenosphere

7. Which type of tectonic plate boundary occurs when two plates move toward one another and one descends into the mantle below the other? *

Oceanic-continental convergent

8. Which of the following did Wegener NOT use as support of his theory of continental drift? *

Fossil evidence

9. The most explosive volcanic eruptions are associated with *

Composite cones

10. The rock fragments, lava, ash, and other objects ejected from the vent of a volcano are called *

Pyroclastic materials

11. Which type of lava is hotter? *

Pahoehoe flows

12. What feature may form in an intraplate area over a rising plume of hot mantle material? *

A hot spot

1. The location on the Earth’s surface directly above the earthquake is called the *

Epicenter

2. The instrument that records earthquakes is called *

A seismograph

3. In areas where the Earth’s surface is saturated with water, earthquakes can turn solid ground into a fluid through *

Liquefaction

4. What scale is most often used to describe the magnitude of an earthquake? *

Richter scale

5. An earthquake in the ocean floor can cause a natural disaster known as *

Tsunami

6. What is the weaker, hotter zone beneath the lithosphere that allows for motion of Earth’s rigid outer shell? *

Asthenosphere

7. Which type of tectonic plate boundary occurs when two plates move toward one another and one descends into the mantle below the other? *

Oceanic-continental convergent

8. Which of the following did Wegener NOT use as support of his theory of continental drift? *

Fossil evidence

9. The most explosive volcanic eruptions are associated with *

Composite cones

10. The rock fragments, lava, ash, and other objects ejected from the vent of a volcano are called *

Pyroclastic materials

11. Which type of lava is hotter? *

Pahoehoe flows

12. What feature may form in an intraplate area over a rising plume of hot mantle material? *

A hot spot