Question

can you please explain the answers

24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? PCI;(1) + _H2O(l) → _H PO3(aq) +_HCl(aq) A) 1 B) 2 C) 3 D) 5 E) none of these 25. How many atoms are in 5.54 g of F2? A) 6.02 x 10” atoms B) 0.146 atoms C) 0.292 atoms D) 8.78 x 1022 atoms E) 1.76 x 10” atoms 26. The mass of 1.63 x 10 silicon atoms is A) 2.71 x 10 g B) 4.58 x 1092 g. C) 28.08 g D) 1.04 x 109 g. E) 7.60 x 10 g. 27. How many grams of sulfur are there in 6.0 g of Fe-(SO.),?! A) 2.40 g B) 0.48 g C) 6.00 g D) *0.92 g E) 1.448

Answer 1

Ruation The humber chem, co 3al an ced 24 ach elemen atoms e eguua to must Side reactant e lement on atomsof that mumber Side Product The balanud e quation, diven un Productsid side Reactant H 2 CL 3 0 1 03 L 1 To balane oatoms mu tip 3' Product s{de pz 3 2 0) 0n 3 Po3 Go 7 +4cas JH=6 0 3 CL 1 To balara and 'atoms Produet sid 1 P 3 C 13 'z () c cas) R cactant si d uduct Side P- 1 P 1 O 3 CL3 el-3 Balan e eheni cal eauahion. coeicient of H Mini mun

mass of , eula 37.9968 9m Molar Number 0f mo us of ri in &5u 1 mele F 0.1458 mole Aain 1 6.023 x lo3 atoms f F2 31-998 37.9968 Cantains 6.023 3 atoms 6.023x10anms mtains x5-549 379968 & T6 x10atons 22 atoms 8.78 X10 Sii con mass Malar R8.08 3mae (5i) (atomic) 1 ma ve 6 023 X 10atons si 28-08 Now silion atoms pmesen 28 8 Silieon atoms pnestnt 163x121 28.a8 21 16 3x10 atoms 6.023x1023atoms o01591 Answer 76x10 7-60x 102

mass o on C Sulfate 399-82e4 Molar Motes FRso )n60 6.0% 399.883 -x1mss 0 015 mol ironc) Sulbe ocmuta uni 3' Satoms present- humbir 3 atoms s X F O.015mo 1 mole Fe) 0.O4501mo Sul ur mo lar Sulfur mass o 32 3mes Grams Sent Fun pnesent (32 3malxO04501 me 1.4 % 's Answer 1-L4