Recent content by rufous

Also include the use of solar energy as its use for electricity requires the use of a photovoltaic cell which functions through redox reactions Fuel cells also, especially the hydrogen fuel cell where the product is pure water Also need to consider the materials in many portable cells contain...

Greetings Matey, If I were you, I would shelve the idea of the lessons book and instead go for the "Surfing" series as these have nice easy notes with questions and many answers supplied - an excellent resource for students. Only errors that I have found have been very minor and easily fixed...

Since NaOH and HCl react on a 1:1 ratio (write the equation to verify), then the number of moles of unreacted HCl in the 10 mL sample is the same as answer a). BUT, since there was 25 mL of diluted solution altogether we must multiply the 0.0112 by 2.5 to find the total moles of excess HCl. The...

Because the reaction is taking place in an aqueous system (water is the solvent) its concentration is very high and changes very little by adding any more water and so its effect is quite negligible. Any changes in the other components is quite significant as ther is not much of them present in...

As kaz1 suggested but use 1.008 for H and you get a ratio which is 1.248:1 and this may be rounded to 1.25:1 ultimately giving you a ratio of 5:4 ie C5H4.

The chlorine is being reduced because it has a greater attraction for electrons than does nickel - hence the transfer of electrons to the chlorine half cell (at the same a time an internal flow of ions between the half cells balances this flow of charge due to the electrons in the wire). I...

Regarding water at 90 degrees, it will be neutral. Even though dissociation is increased, the concs, of H+ and OH- are still equal!