Physical Chemistry Answers

What marks for the shape of the graph of F

A Particle of mass m in an one dimensional potential well represented by the following:

V(x)=−W=0|x|<a|x|>a

where W is a positive constant

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1. What will be the energy of the bound state(s)?

2. Comment about the values of W and a

3. How many bound states are possible?

Why are alkali metal chlorides more soluble than alkaline earth chlorides? Explain.

(a) Write the electronic configuration of the elements platinum and gold. Also give

reasons in support of your answer.

(a) Write the electronic configuration of the elements platinum and gold. Also give

reasons in support of your answer.

Directions: Show your complete solutions legibly for every item

1. Given the following reaction:

Mg(OH)2+ 2 HCI - MgCl2+ 2 H20

If 14.5.0 g of Mg(OH)2 and 12.0 g of HCI are combined

a. What is the limiting reactant?

b. How many grams of Mg Cl2 will be produced?

use the balanced equation to answer the following question. One pansit has a mass of 5.0 grams and one Siling Labuyo has a mass of 1.0 gram. How many Hot Pansit can be made from 40.0 grams of pansit at 26.0 grams of Siling Labuyo?

Calculate the differences in energy between ΔU and ΔH for the following reactions at constant pressure at 25^oC.(use ΔH = ΔU + PΔV)

a) CH3CH2CH3(g) + 5O2(g) ⇔ 3CO2(g) + 4H2O (l)

b) C6H12O6 (s)+6O2(g) ⇔ 6 CO2(g) + 6 H2O(l)

c) Mg (s) + 2H + (aq) ⇔ Mg2(aq) + H2(g)

Calculate the differences in energy between ΔU and ΔH for the following reactions at constant pressure at 25oC.( use ΔH = ΔU + PΔV)

a) CH3CH2CH3(g) + 5O2(g) ⇔ 3CO2(g) + 4H2O (l)

b) C6H12O6 (s)+6O2(g) ⇔ 6 CO2(g) + 6 H2O(l)

c) Mg (s) + 2H + (aq) ⇔ Mg2(aq) + H2(g)

How many grams of CO2 are produced when 100 g C4H10 undergoes combustion with 200 g O2?

Use the following molar masses: C4H10=58g/mol, O2=32 g/mol and CO2=44g/mol.

What is the limiting reactant?

what is the excess reactant?

how many grams of CO2 is produced?