General Chemistry Answers

Consider this reaction: 2NOCI(g)⇌NO2(G)+CI2(g) ∆ H=77.16 KJ/mol

Predict the direction of shifting (to the left/right) if the following stresses are applied

1) [NOCI] is increased

2) Temperature is decreased

3)pressure is increased

4) [CI2] is increased

Using Slater's rules Determine Z_eff (2 decimal places) for the following:

Cl =  Cl⁺ = 

Based on your answers above, determine the first ionization energy of Cl to the nearest whole number.

You have a solution that is composed of 0.235 moles NaCl (58.45 g/mole) and 58.0 g of H₂O (d = 0.986 g/mL). What is the molarity of this solution?

You add 3.00 g of Pb(NO₃)₂ (M.W. = 331.2 g/mole) to 75.0 mL of 0.100 M HCl, leading to formation of 0.873 g PbCl₂ (M.W. = 278.1 g/mole) as a precipitate.

a) Which molecule is the limiting reactant?

b) What is the percent yield of PbCl₂? 

 A 550 mL sample of nitrogen gas is warmed from 77C to 86C. Find its new volume if the pressure remains constant.

Considering Strontium (Sr) is in ground state, what possible number of electrons would be in orbitals that are spherical.

Considering you do not focus on the electron configuration to determine the magnetic property of atom, instead, you are to determine it experimentally. How does a diamagnetic substance react to a magnetic field? How will a molecule react if it contains more unpaired electrons? *

Which element has a completely filled subshell? *

Li

N

He

F

Which of the following electron configuration is not possible for an atom?

1s2 2s2 2p6 3s2 3p6 4s2 3d1

1s2 2s2 2p6 2d5

1s2 2s2 2p6 3s1

1s2 2s2 2p1

Which of the following is not paramagnetic? *

Cl

Zn

Br

Na