Question

Hi, David here
I have attached questions I need help with, I hope to hear from you soon?

Questions:
1.Determine the number of moles in the following answer in scientific notations and report the answer to the correct number of significant figures

a) 2.2 grams of potassium bromide, KBr

b) 0.1488 grams of phosphoric acid, H3PO4

c) 1268 mg Al2(SO4)3

2. Determine the mass of each of the following

a) 0.564 mole LiCl

b) 2.34x10 power 3 mole of fructose, C6H12O6

c) 0.1270 mole NaOH

Answer 1

2.29 KBY स RIRS 119 002 gIhole प RB7 = moles ho a 1.5 x 10o-mole ।. ठ5 E -2 mole Frs H3 POy ০।५ठ८ O1403 tH3 Pou= moles ho 94.994 molc .513 X1o3 1.52 XIO3 nole 2 mole 1.52 E-3 Ans Fl (sou3 mourt = ।२ Al (504)3 moles ho 3 059 x13 34215 glm ole 341 63 Rhs mole Lice mole a Lice = Mass hole 23 919 २३.५। ध- Mass 234 x1o ole t tose= 2,34 x1 x 150 15g Mass 4RI56 X 10 dructo 4.22 E +5 Ans ho od Iholes Ro X4o Naoh Mass Nao 5 00