Over a million students use our free study notes to help them with their homework
Both of these are alkali-earth elements, this means that both elements have the same amount of outer-shell electrons (2 electrons). Strontium is a row below calcium, meaning it has an additional electron ...
Xenon has a bigger atomic radius therefore it experiences more shielding.This results in a decrease in nuclear attraction therefore less energy is required to remove an electron from the outermost energy ...
Firstly calcuate the moles of KMnO4 by using the equation n=MV/1000 where n=moles M=molarity (moldm-3) and V= volume (cm3). As the question gives the molarity and volume of KMnO4 you...
Firstly, I would try and establish with the tutee what a buffer is and define it. Going through the key aspects of what a buffer is. The standard definition I have for a buffer is 'A solution that minimis...
Approach this question in a logical manner breaking it down into constituent parts and then explaining these in turn.
Give a defination for acidity i.e. pH: pH=-log10[H+] or pKa=-long10Ka...
←
161
162
163
164
165
→
Internet Safety
Payment Security
Cyber
Essentials
