Chemistry Answers

On dissolving 7.258 gm of HCN. (Ka=7.2×10'-10) in water. The solution becomes 100ml. So the degree of ionization of acid equals ?

ferric phospate is a pesticide active ingredient used in controlling snails and slugs on food crops. How many grams are in 0.6 mole of F3PO4

 Aqueous solutions of sodium sulfide, Na2S, and copper nitrate, Cu(NO3)2, are mixed.  A precipitate of copper sulfide, CuS, forms at once.  Left behind is a solution of sodium nitrate, NaNO3.   Write the net ionic equation for this reaction.

What is acetic acid.

     [H3O+]=2.3 x 10-9 M

What is the formula of the compound in which the atom combining ratios are:

• sulfur : oxygen : fluorine  =  1 : 2 : 2

Compare the mechanisms for the following substitution and addition reactions of benzene:

o   the Friedel-Crafts reaction 

o   the sulfonation of benzene

o   the chlorination of benzene 

o   the hydrogenation benzene

You will need to illustrate and explain the reaction mechanism for each one, as well as the similarities and differences that exist between them.

could you list some similarities and differences between them please?

A certain mass of H2 gas is collected over water at 23 degree Celsius and 765mmHg pressure calculate the p of the dry gas

7.23 × 1024 Al atoms =  [   ] grams Al

What is the percent composition of the element hydrogen in the compound methane, CH4?