Phosphorus can be prepared from calcium phosphate by the following reaction:
Phosphorite is a mineral that contains 
plus other non-phosphorus-containing compounds. What is the maximum amount of 
that can be produced from 2.3 kg of phosphorite if the phorphorite sample is 75% by mass? Assume an excess of the other reactants.
Answer: Thus the maximum amount of that can be produced is 0.345 kg
Explanation:
Given mass of phosphorite = 2.3 kg
As given percentage of phosphorite is = 
According to stoichiometry:
2 moles of phosphorite gives = 1 mole of
Thus 5.56 moles of phosphorite give= 
of
Mass of 
Thus the maximum amount of that can be produced is 0.345 kg
Answer:
a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.
b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.
Water infiltrates faster into soils that are mostly sand than into those that are mostly clay or silt. ... When the soil is completely saturated, additional water moves slowly down through the unsaturated zone to the saturated zone, replenishing or recharging the groundwater.
The CPC equipment ensures the safety and health of workers. Management and employees must be aware of the hazards: the type of chemical, the physical state (liquid, solid
or gas), and the physiological effect (toxic, carcinogen, asphyxiant,
corrosive, etc.).
Vapor-protective clothing is type of chemical protective clothing (CPC) that protects the wearer against chemical vapors or gases.
I believe the answer is 2
