Which is true of the enthalpy of a reaction?
A. Its value does not depend on which reactions are added
B. Its value is always a negative kJ/mol
O
C. Its value is the same as the enthalpy of each intermediate reaction
O
D. Its value depends on which reactions are added
SUBMIT

Give the orbital configuration of the phosphorus (p) atom.

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

How many grams of mgbr2 are needed to produce 75g or metal?