Question

6. Indicate whether each of the following statements is true or false, and explain your reasoning? a. One mole of NH; weighs more than one mole of H2O. b. There are more carbon atoms in 40 grams of CO2 than in 12 grams of diamond (a form of pure carbon). c. There are equal numbers of nitrogen atoms in one mole of NH3 and one mole of N2. d. The number of Cu atoms in 100 grams of Cu(s) is the same as the number of Cu atoms in 100 grams of copper (II) oxide, Cuo. e. The number of Ni atoms in 100 moles of Ni(s) is the same as the number of Ni atoms in 100 moles of nickel (II) chloride, NiCI. f. There are more hydrogen atoms in 2 moles of NH3 than in 2 moles of CH4.

Answer 1

false mole af Nils = 178 1 mole of H₂O = 188 O false Moleular weight of co₂ = 449 i... 44g of co, contains = 1 carbonatem 40g of coz contains = tax 40 = 0.909g siamed Molecular weight of diamond = 12g. Diamond is a pure form of carbon i.e. all the atoms is diamond is e. so in 12 gm of diamon contains 12 g of carbon

@ False . I mole of NH3 = 6-022x102 3 af molecule. I NH3 molecule centains = 1 n atom 6:022X1023 molecule of Nita contains = 6:022x10 of Natom. 1 mole M₂ = 6.022x10 23 moleule. 1*N2 molecule contains = anatom ... 6.022X1023 of No more cale contains = 2x6:022 X 10 8 12-044823 Matem 23

23 e false. Molecular weight of cu = 63.5gmoil 63.5 g af eu (s) = 1 mole 100 g of mcs) = heute morts = 15 mol I mole of Cu (S) o contains = 6:022x102 molewles 1.5 more of cues) contains = 15X60022x10² molecules = 9.48X1023 molewly. gh it. In 9.48X1023 cucs molecules contains 9.4810 molecules. Molecular weight cu o = 79.5 g molt 79.5 g of cuo = 1 mol 100 g of cuo =- 3 LOL 79.5gmoil - I =1.2 mol

23 I mole of cuo contains = 6-0 22x102 molecule 1.2 mole of cuo containy =*2* 6:022 x 1023 molecule = 7.22X1023 molecule. - 1 cuo molecule contains = 1 cu atom 7-22 x 10 molecule contains = 7.22x10² of cu atom.

@ True mole of Nils) = 6.0 22X1023 molecule 100 mole of Nils) = 100x 6.022 x 1023 molecule = 6:022 x 1025 molecule. 25 vi. 6.022x10 molecule of Nils) ='Conlains = 6.022x16 atom of Ni 1 mole Nid = 6:022x10 23 molecule. 100 mole Nid = 100x 6.022X1023_ 6.022x1025 molecule I Niel molecule contains = 1 Ni2tion 6.022x1025 molecule of Niel contains = 6.022x10 of Nition 25, :21

# False 1 mole of NH₃ contains = 6:022x10 23 molecule. 2 mole of Netz contains = 2x6:022x10?? molecule = 12.044 x 1623 molecule I molecule of NHZ = 1 N +3H = 4 atom 12.04 1 molecule of NH3 contains = 3H atom 12:04X1023 molecule of NH3 contains = 3x12.044 x 10 it atom = 36*13x10 H atom. 23. I mole of CH4 contains = 6:022 x 102 molecule. - mole of CHu contains = 2x 6.022 x 1023 molecule. 1 = 12.044 x 1023 molecule. 1 lette molecule of CH4 = 16+44= 5 atom. 1 ... molecule of Chu contains =4 H atem - 23 12.044 x 1023 molecule of eHa contains = 4x12.044810 of H alom =48:176 x 10 it alom 23