Foundations in Chemistry Random Retrieval

What mass of silver is displaced from aqueous silver nitrate solution by 4.00 g magnesium?

(Relative atomic masses: Mg = 24.3, Ag = 108)

In which of these reactions is the first named element reduced:

(i) hydrogen reacting with copper(II) oxide to form copper and water

(ii) iodine reacting with chlorine to form iodine monochloride

(iii) aluminium reacting with chromium(III) oxide to form aluminium(III) oxide and chromium

(iv) iodine reacting with aluminium to form aluminium iodide

In a titration, 25 cm³ of 0.100 mol dm^-3 potassium hydroxide was neutralised by 12.5 cm³ dilute nitric acid. What was the concentration of the nitric acid?

In which of these molecules do the intermolecular forces arise largely from attractions between temporary dipoles?

At room temperature, in the crystal lattice of an ionic compound the ions are:

(i) arranged symmetrically

(ii) uncharged

(iii) held together by electrostatic forces

(iv) stationary

During the electrolysis of molten sodium chloride:

(i) sodium metal forms at the negative electrode

(ii) sodium ions are reduced at the cathode

(iii) chloride ions lose electrons at the positive electrode

(iv) chlorine atoms are given off as a gas at the anode

An element M has two electrons in its outer shell. An element X has seven electrons in its outer shell. What is the likely formula of the compound of X and Y?

A 20.0 cm³ sample of barium hydroxide solution, Ba(OH)_2(aq), was neutralised by exactly 18.0 cm³ of 0.10 mol dm^-3 hydrochloric acid, HCl_(aq). What was the concentration of the barium hydroxide solution?

Calculate the theoretical yield of ethyl ethanoate, CH₃CO₂C₂H₅, when 6.9 g ethanol, C₂H₅OH, reacts with excess ethanoic acid, CH₃CO₂H.

How many electrons are there in an oxide ion?