For the reaction 2AgNO3 + BaCl2 ---> 2AgCl + Ba(NO3)2 ,how many moles of AgNO3 remain if 0.6 mole

题目

For the reaction 2AgNO3 + BaCl2 ---> 2AgCl + Ba(NO3)2 ,how many moles of AgNO3 remain if 0.6 mole
Answer 0.4 mol
0.2 mol
0.0 mol
0.8 mol
0.1 mol

答案

Do you lose something?0.6 mole→which one?