Inorganic Chemistry Answers

What is the octet rule? Why might this principle be considered the "driving force" that causes elements to react to form chemical bonds?

How many atoms are in 0.0317 mol K?
Answer in Units of atoms

8.12gm of Barium hydroxide reacts with 5.10gm of Hydrogen chloride to give how many gm of Barium chloride and water?what is the number of moles of Barium chloride and Water here and how can I calculate it?

16. If a sample of a compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound?

A. 27.3%
B. 25.0%
C. 37.5%
D. 3.67%
E. 2.67%

18. When the Danish physicist Niels Bohr proposed that the energies of electrons inside atoms were quantized,

A. he meant that the electron could have only particular, allowed energies
B. he had a complete explanation for this effect.
C. it contradicted the work of the German physicist Max Planck.
D. it helped explain classical physics.
E. it confirmed the work of the British scientist Rutherford.

19. How many electrons can an n = 6 orbit or shell theoretically hold?

A. 72
B. 8
C. 18
D. 32
E. 50
Detailed explanation: NO

Is ClF5 a gas, liquid, or solid at room temperature.

How many grams go propane can be burned by 24g of O2?

how could you estimate the relative ordering of the electron -donor of the power PR3 Ligands?,when provided with sets of different ligands of the PR3 type and a large supply of (CO)5W(thf) with which to make a series of complexes of the form(CO)5(PR3)(by substitution of thf with PR3).

The ability of an element to participate in a chemical reaction is measured in form of its ---------
Ionization Energy
Neutral charge
Electron density
Electron cloud

2 The properties of elements are periodic functions of their atomic numbers is the-----------
Newsland law
Modern Periodic law
Lecoq de Biosbaudran' law
Mendeleev's law

3 The positions of K and Ar,Co and Ni do not remain anomalous any longer since --------- is used in arranging the elements
Atomic mass
Ionic charge
Mass number
Atomic number

4 ________and____________ tried to classify elements into periods
De Chancourtois and Dobereiner
De Chancourtois and Le Chatile
Gibbs and Dobereiner
Graham and Dalton

5 Potassium compounds can be used for all but one of the following
liquid detergents
Plant fertilizer
Manufacture of glass
Gun Powder

6 Except for rubidium and caesium,
All common cations are larger than all common anions
All common cations are of the same size with all common anions
The cations are not avaliable
All common cations are

A certain amount of hydrogen peroxide was dissolved in 100 mL of water and then titrated with 1.68 M KMnO[sub]4[/sub]. How much H[sub]2[/sub]O[sub]2[/sub] was dissolved if the titration required 18.3 mL of the KMnO[sub]4[/sub] solution?


2KMnO[sub]4[/sub](aq) + H[sub]2[/sub]O[sub]2[/sub](aq) + 3H[sub]2[/sub]SO[sub]4[/sub](aq) → 3O[sub]2[/sub](g) + 2MnSO[sub]4[/sub](aq) + K[sub]2[/sub]SO[sub]4[/sub](aq) + 4H[sub]2[/sub]O(l)

If the volume of 2.46 x 1021 molecules of HBr(g) at 46. °C and 1.36 atm is 86.7 mL, then what is the volume of 2.46 x 1021 molecules of CO2(g) at 46. °C and 1.36 atm?