Answer:
2Al2O3 (l) ---> 4Al (l) + 3O2 (g)
Explanation:
The reaction is the electrolysis of aluminium oxide. It decomposes aluminium oxide (Al2O3) into aluminium metal (Al) and Oxygen (O2). In this process, aluminium oxide is molten (liquid state) so that ions can move to complete the electricity circuit.
Al2O3 (l) ---> Al (l) + O2 (g)
Balance the equation:
2Al2O3 (l) ---> 4Al (l) + 3O2 (g)
25.0 g.....................................................
Solids: wood, plastic, metals
Liquids: water (H2O), soap, juice, milk
Gases: Air, water vapour (H2O), carbon dioxide (CO2)
An element: gold, silver, aluminum, copper, nickel, iron, nitrogen in the air
A compound: salt (NaCl), carbon dioxide (CO2)
A homogenous mixture: air, water with sugar or salt dissolved in it
A heterogeneous mixture: orange juice with pulp, cereal in milk
Pure substances: diamond, water, salt, baking soda, sugar
Answer:
false
Explanation:
Elements are pure substance. A ball of sodium will only have sodium atoms.
Answer:
0.0286 moles
Explanation:
Given mass, 
Molar mass of boron, M = 10.811 g/mol
Hence, there are 0.0286 moles in given mass of boron.
