For the following questions consider a water molecule, h2o. a. what type of bond is formed between the oxygen and the hydrogen atoms? b. describe how these bonds form. c. explain why there are two hydrogen atoms for each oxygen atom.

This is about type of bonds between elements that make water molecules.

A) Polar Covalent Bond

B) Because of unequal sharing of valence electrons

C) Because left hand side must balance out with right hand side

1(O₂) + 2H₂ → 2H₂O

In chemical equations, the left hand side must balance out with the right hand side. Thus, that's why the right hand side has 2 hydrogen atoms for one oxygen atom.

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the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3