Question

2Hg + O2---> 2HgO

If the total mass of the product, mercuric oxide, HgO, is 433.2 grams, what is the total mass of the Mercury and Oxygen on the reactants side of the equation?

Answer 1

3.1- the element is in group 1a and has 1 valence electron

3.2 -
1physical
2chemical




4 -
compund has 7 total atoms
2
this formula contains 3
3
this compund is made of sodium
1

4.1-
coefficiant front




5- 433.2

5.1- chemical element




6-
reactant
product
product


6.1- yes

6.2- _ _
reactants
substances

Answer 2

1-the red circles because they are protons in the nucleus
1.2-protons nucleus

2-
has 1 valence electron
is in group 2a
has 10 protons
2.1- valence




3- the elements in yellow are in the same
column group
row period

3.1- the element is in group 1a and has 1 valence electron

3.2 -
1physical
2chemical




4 -
compund has 7 total atoms
2
this formula contains 3
3
this compund is made of sodium
1

4.1-
coefficiant front




5- 433.2

5.1- chemical element




6-
reactant
product
product


6.1- yes

6.2- _ _
reactants
substances