Question

Oblicz masę czasteczkową i atomową : 3Na, 2o2, 4H2o, 2Mg(OH), 2CaCO3

Answer 1

m3Na=3*23u=69u

m2O2=4*16u=64u

m4H2O=4(2u+16u)=72u

m2Mg(OH)2=2(24u+2*1u+2*16u)=116u

m2CaCO3=2(40u+12u+3*16u)=200u

Answer 2

m 3Na=3*23u = 69u

m 2O2=4*16u = 64u

m 4H2O=8*1u+4*16u = 72u

m 2Mg(OH)2=2*24u+4*1u+4*16u = 116u

m 2CaCO3=2*40u+2*12u+6*16u = 200u