Blog

What is the major intermolecular forces between H of H2O molecule with N (nitrogen) of another molecule of NH3?  

Both gas and liquid share the following property: indefinite volume definite shape and volume   c. definite shape   d. definite shape and indefinite volume   e. no correct answer given

What is the bond angle of a molecule with 2 double bonds around the central atom?

Which gas law involved moles of the gas?

The following elements with the smallest electronegativity is

Complete the following matching pair questions.  You need to draw the Lewis structures on a piece of paper for all the possible formulas before selecting the answers.  No need to send me the paper! Note:  All the numbers in the formulas are subscripts.

What is the mole of 2.50 L oxygen at 325oC and 83.2 atm?  The gas constant is 0.0821 L atm/ K mol.         (a)  0.128 mol               (b) 4.24 mol              (c)  0.236 mol               (d)  42.4 mol            (e)  7.80 mol

According to Gay Lussac’s Law: P is directly proportional to V P is directly proportional to T P is inversely proportional to T V is directly proportional to T no correct answer given

The metallic solid is KBr Ca Na2O S no correct answer given    

An 355 mL of a balloon filled with hydrogen gas has 848 torr at 75oC.  What is the volume of this gas if the pressure and temperature are changed to 375 torr and 64oC, respectively?  (SHOW CALCULATION in the space below).  Must show calculation to get credit!  Without calculations, you will get zero point, even if you get the answer correct.  DO NOT email me your scratch paper. (Hint: make sure you use the correct unit for temperature!)