Question

a sample of of potato was ground in a ball mill to give a starch like molecule of lower molecular weight. the product ansnlysed 0.086% phosphorous if each molecule is assumed to contain one atom of phosphorous, what is the molecule weight of meterial​

Answer 1

Answer:

since the percentage is .86%.therefore

in 100 gm of starch molecule will contain .86 gm of phosphorus

given 1atom of phosphorus is contaoned in one molecule.

therefore Na(avagadro no) of phosphorus will also contain Na molecule or 1mole which corresponds to molecular mass.

.86 gm of phosphorus equal to 100 gm of molecule

31 gm corresponds to 100×31/.86=3604.5gm

average molecular mas=3604.5

Answer 2

Answer:

This is answer to your question mate