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Law of Conservation of Mass. Is the mass of the following equations conserved (balanced) or not? Explain.

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law of conservation of mass

Law of Conservation of Mass

Is the mass of the following equations conserved (balanced) or not? Explain.

2h 2 o 2 2h 2 o o 2

The following chemical equation shows the decomposition of hydrogen peroxide into water and oxygen. When yeast is added to the peroxide, the decomposition speeds up by the yeast acting as a catalyst.

2H2O2 2H2O + O2

BALANCED

H = 4 H = 4

O = 4 O = 2 + 2 = 4

ch 3 cooh nahco 3 ch 3 coona h 2 o co 2

Acetic acid (vinegar) reacts with sodium bicarbonate (baking soda) and produces sodium acetate, water, and carbon dioxide.

CH3COOH + NaHCO3 CH3COONa + H2O + CO2

C = 3 C = 3

H = 5 H = 5

O = 5 O = 5

Na = 1 Na = 1

BALANCED

is the mass conserved balanced
Is the mass conserved (balanced)?

BALANCED

K = 2 K = 2

Br = 2 Br = 2

is the following chemical equation indicate a chemical reaction
Is the following chemical equation indicate a chemical reaction?

Ag + H2O Fe + H2S

NOT a CHEMICAL EQUATION

is the mass conserved balanced1
Is the mass conserved (balanced)?

Na = 1 Na = 2

Cl = 2 Cl = 2

NOT BALANCED

is the following chemical equation indicate a chemical reaction1
Is the following chemical equation indicate a chemical reaction?

4 Fe + 3O2 2Fe2O3

A CHEMICAL EQUATION

mg 10 o 2 mgo
Mg + 10 O2 MgO

Mg = 1 Mg = 1

O = 20 O = 1

NOT BALANCED

does the following chemical equation follows the law of conservation of mass
Does the following chemical equation follows the law of conservation of mass?

Zn + S CaO

NOT a CHEMICAL EQUATION

Zn = 1 Ca = 1

S = 1 O = 1

does the following chemical equation follows the law of conservation of mass1
Does the following chemical equation follows the law of conservation of mass?

Mg + Cl2 2MgCl

BALANCED

Mg = 1 Mg = 2

Cl= 2 Cl = 2