B

$$please give a detailed breakdown of how to calculate buffer $3,6$ and $7.$ Please show all calculations and final a

Table $1$

PRELAB

$\backslash$table$[[$Buffer $1$: $1MNa{H}_{2}P{O}_4,V=100mL,],[MW(\frac{g}{m}ol)-137\mathrm{.}99,m(g)=,],[$Buffer $2$: $1MN{a}_{2}HP{O}_4,V=100mL,],[MW(\frac{g}{m}ol)=142,m(g)=,],[$Buffer $3$: $100mM$ Sodium Phosphate buffer $,V=100$mLnswer.

Buffer $3$: $100$ mM Sodium Phosphate bufferVolume $($mL$)$ of $1$ M NaH$2$P$04$Volume $($mL$)$ of $1$ M NaHP$04$V $=100$ml

$$ buffer $6$ refer to chart

$$ buffer $7$ refer to chart