Question

Review1 ConstantsT Periodic Tabie blue spheres represent nitrogen atoms and purple spheres represent iodine atoms Products Reactants Part A write the formula for each of the reactants and products Express your answers as chemical formulas separated by commas Submit Request Answer Part B wite the balanced equation for the reacion Express your answer as a chemical equation. Identify all of the phases in your answer ΑΣφ Submit Part C ndicate the type of reaction as oombination, decomposition, single replacement double replacement, or combustion. O combination O single replacement O double replacement

The mole (mol) is a counting unit used by chemists, much like the dozen is a counting unit used by bakers: Suppose a piece of silver jewelry contains 5.64×1022 atoms of silver (Ag).

Answer 1

A) blue sphere : nitrogen purple sphere iodine

Reactant : N₂ + I₂

Product:NI₃

B) The reaction is

2N₂ + 6I₂ --> 4NI₃

C) as there is formation of a molecule from two elements it is "combination"

Second:

the reaction will be

Cl2(g) + 2HF(l) ---> F2(g) + 2HCl(g)

D) decomposition of PbO2 will be

PbO2 ----> PbO + 1/2O2 (g)

The molar mass of Ag = 108 g / mol

number of atoms given =5.64×10²²

each mole contains = 6.023×10²³

the number of moles in given atoms = 5.64×10²²/6.023×10²³ = 0.0934 moles