Phosphorus is obtained primarily from ores containing calcium phosphate. if a particular ore contains 66.1% calcium phosphate, what minimum mass of the ore must be processed to obtain 3.53 kg of phosphorus?

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?