Question

Se dau substantele: a)S,C,P,Mg,Zn,Al; b)H2,N2,O2,Br2,Cl2; c)O2,CO2,SO3; d)NH3, H2S, NaCl Calculeaza cantitatea de substanta,daca masa fiecareia din ele este egala cu 100g(raspunsul cu aproximatie pina la zecimi)

Answer 1

a) 
n=m/M=100/32=3,125 moli S

n=m/M=100/12=8,(3) moli C

n=m/M=100/31=3,2258 moli P

n=m/M=100/24=4,1(6) moli Mg

n=m/M=100/65=1,538 moli Zn

n=m/M=100/27=3,7037 moli Al

b) n=m/M=100/2=50 moli H2

n=m/M=100/28=3,5714 moli N2

n=m/M=100/32=3,125 moli O2

n=m/M=100/160=0,625 moli Br2

n=m/M=100/71=1,40845 moli Cl2

c) n=m/M=100/44=2,(27) moli CO2

n=m/M=100/80=1,25 moli SO3

d) n=m/M=100/17=5,88235 moli NH3

n=m/M=100/34=2,9411 moli H2S

n=m/M=100/58,5=1,7094 moli NaCl