C12H22O11

C12H22O11 C12H22O110.3g0.3g/mol=？mol/L

C12H22O11摩尔质量为342g/mol,0.3/342g/mol等于8.78×十的负四次方摩尔

蔗糖的化学式为C12H22O11，计算：（1）蔗糖中含有______种元素，（2）一个蔗糖分子中含有______个原子．？