Reference no: EM13112459
1.Write equations for the neutralization reactions that result in the formation of the following salts:
a) lithium carbonate
b) copper (II) chlorate
c) aluminum sulphate
d) ammonium iodide
2.For each of the following situations, identify those for which a reaction is likely to occur. For those that do occur, write a net ionic wquation.
a) Chromium dipped into silver nitrate.
b) Gold immersed in hydrochloric acid.
c) Nickel pellets dropped into calcium acetate, Ca(C2H3O2)2.
d) Aluminum dropped into a bath of sulphuric acid.
e) Zinc dipped into a solution of lead (II) nitrate.
3.An industrial plant that specializes in cleaning up waste liquids is confronted with a problem of separating the metal ions found in a large vat of solution. By analysis, the solution was found to contain varying quantities of silver, barium, and iron (III) ions. Suggest a procedure for separating the metal ions be precipitation.
4. A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
Calculate the diameter of an oil molecule
: A drop of oil volume 0.05 cm3 is released from a medicine dropper on to a calm surface of a pond where it spreads out to cover an area of 40 cm2. Calculate the diameter of an oil molecule.
|
Determine the energy difference between the orbitals
: Sodium atoms(Na) emit light with a wavelength(λ) of 330 nano meters when an electron moves from a state of 4 p orbital to a state of 3 s orbital now you just need to determine the energy difference between the orbitals.
|
Why is dna sometimes refered to as a palindrome
: A restriction endonuclease "cuts" two DNA molecules at the same location. What can you assume is identical about the molecules at that location?
|
Find the molecular formula for estrone
: Estrone is a female sex hormone that is known to contain 80.0% carbon, 8.2% hydrogen, and the remainder oxygen. If 793mL of estrone is found to have a mass of 4.97g at 0.90atm and 200oC, find the molecular formula for estrone.
|
Determine the mass of baf2
: A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
|
Oliva is inspecting some specimens under the microscope
: Oliva is inspecting some specimens under the microscope. Which of the following could she classify as a common tissue rather than as part of an organ?
|
Explain the decreasing melting point from naf to nai
: Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Explain the decreasing melting point from NaF to Nai.
|
What is hematocrit
: What is hematocrit? If the hematocrit decreased from the normal range, and would this decreased potentially dangerous?
|
Determine the molecular formula for vitamin a
: If vitamin A is 83.86% Carbon and 10.56% Hydrogen by mass then determine the the molecular formula this vitamin A.?
|