Which of the following molecules is predicted to have the smallest molecular dipole moment?

hi
hcl
h2
hbr

HI

Explanation:

The smallest molecular dipole moment among st the given option is for HI.

Perhaps, the correct order of dipole moment for the molecules given is

HI < HBr< HCl<HF.

Since, The order of electronegativity of of halogen are

F>Cl>Br>I

I has the least electronegativity hence, the pull it applies on the elcetrons of the combining atom is least and hence, the least dipole moment.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

2b2t

explanation:

2b2t