1. Write in 4 ways the formation of Mg3(PO4)2. ( I think it goes like this: acid + base --》salt and water, metal + nonmetal --》salt, metal + acid --》salt and hydrogen...) 2. What are the concentrations of Na(+) and SO4(2-) ion in a solution containing 1.42g of dissolved Na2SO4 in 500ml, assuming the dissociation is complete.​

Easy definition for atom and atomic mass

Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o

Acontrol during an experiment. might change remains constant does not exist does change