Over a million students use our free study notes to help them with their homework
As a general rule metals bind to non-metals ionically, and non-metals to non-metals bind covalently. For example NH3 is covalent, vs NaCl is ionic. Conductivity rates for electricity are in general depend...
The endothermic and exothermic reactions should be identified. Note: if the forward reaction is endothermic, the reverse reaction will be exothermic with the same ΔH but opposite values.In this example: t...
ZnCO3 + 2HCl --> ZnCl2 + H2O + CO2Student must be aware of the formula for a carbonate (CO3) and how to balance the equation. I leave the balancing to the end to make sure I have written the equa...
Diamond and graphite are both allotropes of carbon. This means they are both made up of carbon atoms arranged differently and exist in the same physical state. They both have a giant covalent structure.Di...
[OH-] = 0.0262 mol dm-3[H+] = (Kw/[OH-]) = 2.93 x 10−15 / 0.0262 (= 1.118 x 10−13) pH = (− log (1.118 x 10−13) = 12.9514 = 12.95
←
153
154
155
156
157
→
Internet Safety
Payment Security
Cyber
Essentials