Mercury is a silver, shiny liquid at room temperature. It is used in some types of thermometers. Draw what you would observe if you placed blocks of aluminum, iron, lead, and gold into a pan that contained mercury.

Directions: Look closely at the table.below and use the information in it to answer the questions.

Substance

Aluminum

Iron

Copper

Lead

Gold

Mercury

Density (g/cm3 )

2.7

7.9

8.9

11.4

19.3

13.5

----

1. What is the mass of 1 cm3

of gold?

2. What would be the mass of a piece of copper that had a volume of 10 cm3

?

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Directions: Look closely at the table.below and use the information in it to answer the questions.

'

Substance

Aluminum-

Iron

Copper

Lead

Gold

Mercury

Density (g/cm3 ) density ==

2.7

7.9

8.9

11.4

19.3

13.5

----

1. What is the mass of 1 cm3

of gold?

2. What would be the mass of a piece of copper that had a volume of 10 cm3

?

20 drops hope this

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-