bài 1
a)mC4H10=nxM=0,15x58=8,7g
b)mMgO=nxM=0,45x40=18g
c)mAl(OH)3=nxM=0,25x78=19,5 g
bài 2
a)nCl2=\(\dfrac{m}{M}\)=\(\dfrac{17,75}{71}\)=0,25 mol
b)nO3=\(\dfrac{m}{M}\)=\(\dfrac{60}{48}\)=1,25 mol
c)nSO3=\(\dfrac{m}{M}\)=\(\dfrac{12}{80}\)=0,15 mol
bài 3
a)MA=\(\dfrac{m}{n}\)=\(\dfrac{12}{0,5}\)=24 g
b)MB=\(\dfrac{m}{n}\)=\(\dfrac{73,5}{0,75}\)=98 g
bài 4
a)VC4H10=nx 24,79=0,1x 24,79=2,479 l
b)ko có mol à
c)VCl2=nx24,79=0,25x24,79=6,1975 l
\(\dfrac{m}{n}\)\(\dfrac{m}{n}\)