Inorganic Chemistry Answers

What would be the final concentration of a solution containing 20mL of 1.5% NaCl solution diluted to 200mL

Magnesium chloride can be made by reacting excess magnesium carbonate with dilute hydrochloric acid.
The equation for the reaction is
MgCO3 + 2HCl → MgCl2 + H2O + CO2
(a) In an experiment 0.050 mol of MgCO3 reacts with excess HCl.
A yield of 5.5 g of MgCl2.6H2O is obtained.
(i) Calculate the percentage yield of MgCl2.6H2O

Lattice energy of Al2o3 is more than pbO why

Sio2 has more glass Transition temperature than BaF.why

Washing soda, Na2CO3, is used in the manufacture of glass, pulp, and paper. What is its percentage composition?

Use periodic table to prove that the total formula mass is conserved in this equation:

Na2CO3 + H2O = NaOH + H2CO3

what is the energy of a mole of photons that have a wavelength of 705 nm?

Solid materials can be classified into three different categories named crystalline, polycrystalline and amorphous. Advance studies in material chemistry lead to development of technology and innovation. (a) Define the factors that should be taken into consideration when innovating new materials.

What are the similarities and the difference between:
i. a 1s orbitals and a 3s orbitals
ii. a 2px orbitals and 2pz orbitals
The highest energy electrons in an atom Q have the principal quantum number n = 4 and the angular quantum number l = 0. What is the maximum number of electrons present in atom Q?

Zinc sulphide (ZnS) has two common polymorphs which is sphalerite and wurtzite.
i. Diffrentiate the arrangement of ions in the sphalerite and wurtzite structure.
ii. By using your own illustration, briefly explain two most common atom orientations that generate close-packed lattice.