Questions from Chemistry

Q: Determine whether the following molecules are polar or nonpolar: a

Determine whether the following molecules are polar or nonpolar: a. NBr3 b. OCS c. XeF4

Q: Is water a good buffer? Why or why not?

Is water a good buffer? Why or why not?

Q: Write the formula for each ionic compound below, and circle if

Write the formula for each ionic compound below, and circle if the compound is Tonic or Molecular. If the compound is ionic, check if is water soluble or water insoluble.

Q: Give the geometry, molecular shape about the central atom and hybridization

Give the geometry, molecular shape about the central atom and hybridization for each central atom of: 1. H2C=C=CH2 2. IF2- 3. PCl4- 4. HONO2

Q: 10. Select the best reagents for the reaction below.

10. Select the best reagents for the reaction below. 11. Select the best reagents for the reaction below

Q: 12. Select the best reagents for the reaction below.

12. Select the best reagents for the reaction below.

Q: Which compound matches the IR spectrum? /

Which compound matches the IR spectrum?

Q: Draw the Lewis dot structure for NaF.

Draw the Lewis dot structure for NaF.

Q: For a particular isomer of C8H18, the following reaction produces 5113

For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions. What is the standard enthalpy of formation of this isomer...

Q: Hydrazine, N2H4, is a base with base strength constant Kb

Hydrazine, N2H4, is a base with base strength constant Kb = 10-6.10 M, i.e. for the equilibrium: The equilibrium constant is K = 10-3.15 for the reaction: 4c. Calculate the acid dissociation const...