3fe + 4h2o < => fe3o4 + 4h21) how many molecules of h2 are produced? 2) how many oxygen atoms are found in the products? 3) how many moles of fe3o4 are formed? 4) what is the ratio of the number of moles of fe atoms to the moles of h2o molecules? 5) how many hydrogen atoms are found in the reactants? choices for 1, 2, 3, and 5: 0, 1, 2, 3, 4choices for 4: 1/4, 3/4, 4/4

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

Find the mass in grams of 1.37x1020 particles of h3po4

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