Generally, the boiling point decreases as the formula mass decreases; however, ammonia (NH3) does not follow this trend primarily because of:     dipole-dipole attraction     Dispersion forces     Covalent bonding     Hydrogen bonding

Q: A substance expands when it freezes. Which of the following is the most likely identity of the…

A: Generally, substances condense upon freezing rather than expanding and water is one of the few…

Q: Compar H2O,HF and NH3 ,why H2O is the highest boiling point?

A: Since in all 3 of the species, i.e H2O, HF, and NH3 there is H bonding present Now the specie which…

Q: Which of the following statements about the water molecule is TRUE? O The electronegativities of…

A: Water molecular formula is H2O  It contains 2 Hydrogen atoms and 1 Oxygen atom.  Oxygen atom is more…

Q: Br 3) a) Write the chemical formula for each compound. b) Order the compounds from lowest to highest…

A: The chemical formulas of the compounds are:

Q: Which of the following substances contain polar covalent bonds: MgCl2 HCl NaCl O2

A: A covalent bond is defined as the chemical bond formed by the sharing of two electrons between two…

Q: Rank the elements or compounds in the table below in decreasing order of their boiling points. That…

A: The given options are : A). CH3-N(OH)-CH3  B). Cr C). CH3CH2OCH3  D). Ar  Boiling point order = ?

Q: is sulfur tetrabromide polar or nonpolar?

A: Any compound which have significant dipole moment then the compound must be polar but any compound…

Q: .Write the chemical formula for the molecule drawn below. Which class of organic molecule does it…

A: The given molecule is an . The molecule is -

Q: For each compound in the table below, decide whether there would be any hydrogen-bonding force…

A:

Q: Determine the formula unit

A:

Q: What word or two-word phrase best describes the shape of the hydrogen sulfide ( H,S ) molecule? Bent

A: The molecule given is hydrogen sulfide (H2S)