what is the formula for (average) speed if you're given the direction and the amount of time an object has changed position

Different isotopes indicate that an element will have different numbers of

Determine the reaction and balance the following equations urgent due in the morning

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?