Like many metals, aluminum reacts with a halogen to give a metal halide: 2 Al(s) +3 Br2 (4) → Al,Bre (s) What mass of Br2, in grams, is required for complete reaction with 9.71 g of Al? Mass g Br2 %3D What mass of white, solid Al2Bre is expected? Mass = g Al2 Bre

4. When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas are? 2 Li ( + 2 H,O → 2 LİOH(aq) + H«e) (s) 2(g)

How many grams of oxygen react with iron to make 13.8 g of iron(III) oxide (rust)? 2Fe (s) + 3O₂ (g) → Fe₂O₃ (s) A) 2.77 g B) 2.07 g C) 8.30 g D) 1.84 g E) 4.15 g

8.229 X 1025 molecules of phosphine (PH3) reacts with 2.00 kg of O2 to produce phosphoric acid. Find: Limiting Reagent Moles of each reactant leftover Mass of each product made

Consider the following unbalanced equation: Ca3(PO4)2 (s) + H2SO4(aq) → CaSO4(s) + H3PO4(aq) What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulphuric acid (98% H2SO4 by mass)?

A sample of limestone and other soil materials was heated, and the limestone decomposed to give calcium oxide and carbon dioxide. CACO3 (s) → Ca0(s) + CO2 (g) A 5.483 g sample of limestone-containing material gave 2.14 g of CO2, in addition to CaO, after being heated at a high temperature. What was the mass percent of CACO3 in the original sample? %

What mass of cobalt (III) sulfide is produced from the reaction of 0.750 g of sulfur with 3.50 g of cobalt? Co (s) + S (s) → Co₂S, (s) g

A student investigated the stoichiometry of the reaction of zinc (Zn) with HCI solution and reported the following data: When 0.2158 g of Zn reacted with 10.00 mL of 1.000M HCI, 82.062 g of water was displaced. A total of 36.00 mL of 9.501 x 102M NaOH solution was required to titrate the HCI remaining in the reaction mixture at the end of the reaction. The room temperature was 27.0°C and the barometric pressure was 777 torr. The gram atomic mass of Zn is 65.38 g mol The density of water at 27.0 °C is 0.9965 g mLand its vapor pressure is 27.0 torr. R = 8.21 X 10 - -1 atm K-1 mol 1 Calculate the number of millimoles of Zn reacting

what's the net ionic equation of Ag + Pb(NO3)2 =

Can anyone explain step by step （in details）how did we get the balanced equation？