In some classic studies on the fermentation of glucose to ethanol and CO2 by extracts of brewer's yeast, it was observed that inorganic phosphate (Pi) was essential to fermentation; when the supply of inorganic phosphate was exhausted, fermentation ceased before all the glucose was used. Why did fermentation cease when the supply of inorganic phosphate was exhausted?

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

thats a little if u want the answer just look it up on google thats what i do haha : )