Answer:
A,C
Explanation:
168.75 ml
M1V1=M2V2
375ml*.45M=1M*V2
MgBr(aq) + (NH4)3PO4(aq) -------> NH4Br(aq) + Mg3(PO4)2(s)
2CH3CHOHCH3 + 9O2 ----> 6CO2 + 8H2O
It will be a clean burn ( no smoke).