. Flashcards
Soda-lime glass is made from
- limestone
- sand
- sodium carbonate
Borosilicate glass is made from
Sand and boron trioxide
————- has a higher boiling point than soda-lime glass
Borosilicate glass
Bronze =
Copper + tin
Brass =
Copper + zinc
State the haber process equation.
N2 + 3H2 —> 2NH3
The air is —— % nitrogen.
78
What is the equation for ammonium nitrate
NH3 + HNO3 —> NH4NO3
You can react phosphate rock with
- nitric acid
- sulfuric acid
- phosphoric acid
Reacting nitric acid and phosphate rock produces
- phosphoric acid
- calcium nitrate
Reacting sulfuric acid and phosphate rock produces
- calcium sulfate
- calcium phosphate ( this mixture is known as single superphosphate)
Reacting phosphoric acid and phosphate rock produces
Only Calcium phosphate
( this product can called triple superphosphate)
In the haber process the hydrogen mainly comes from …
Reacting methane with steam to form hydrogen and carbon dioxide
Sewage settles in a settlement tank and undergoes …
Sedimentation. This is when heavier rocks sink to the bottom to produce sludge at the top.
The ——— is removed from the settlement tank and treated by biological aerobic digestion. This is when air is pumped through the water to encourage the break down of organic matter.
effluent