An atom of U-238 contains:
What is the general name of the groups of elements that cont…
What is the general name of the groups of elements that contain Mn, Au, Pt, Cu, Fe and Cr? (1 mark)
The most reactive metal of the following elements is:
The most reactive metal of the following elements is:
An isotope has:
An isotope has:
The rotting of food is a change that is:
The rotting of food is a change that is:
Balance each of the following equations: (3 marks each) a)…
Balance each of the following equations: (3 marks each) a) H2SO4 + Al(OH)3 → Al2(SO4)3 + H2O b) Ca3P2 + H2O → PH3 + Ca(OH)2 c) C3H7OH + O2 → CO2 + H2O d) Cl2 + CrBr3 → Br2 + CrCl3
The property that does not involve measurement is:
The property that does not involve measurement is:
The reaction N2 + 3H2 → 2NH3 + Q:
The reaction N2 + 3H2 → 2NH3 + Q:
Given the function solve for when .
Given the function solve for when .
An example of a decomposition reaction is:
An example of a decomposition reaction is: