Question

Ex:1 Cati moli reprezinta: a)800 g calciu
B)72 g carbon
C)112 g fier
D)4,2 g magneziu
Repedeeeee!!!!

Answer 1

$a)A_{Ca}=40g/mol$

$n_1=\frac{m_{Ca}}{A_{Ca}}=20 \ moli$

$b)A_C=12g/mol$

$n_2=\frac{m_C}{A_C}=6 \ moli$

$c)A_{Fe}=56g/mol$

$n_3=\frac{m_{Fe}}{A_{Fe}}=2 \ moli$

$d)A_{Mg}=24g/mol$

$n_4=\frac{m_{Mg}}{A_{Mg}}=0,175 \ moli$