Which of the following equations violates the law of conservation of mass?

a) 2al + 6hcl yields 2alcl3 + 3h2
b) na2c2o4 + pb(no3)2 yields pbc2o4 + 2nano3
c) agno3 + licl yields agcl + lino3
d) 3ca + 2cr(no3)3 yields 3ca(no3)3 + 2cr

Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99