In the reaction k2cro4(aq) + pbcl2(aq) → 2kcl(aq) + pbcro4(s), how many grams of pbcro4 will precipitate out from the reaction between 500.0 milliliters of 3.0 m k2cro4 in an excess of pbcl2?
1.5 grams
3.0 grams
480 grams
150 grams

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

Classify this reaction: 2al+n2-> aln.

How many moles are in 7.2 x 10^23 carbon molecules?