For HSC 2010 Chemistry question 33)b) I used the correct equations and got the final answer. However the sample answer's half equations says at the cathode oxidation occurs (equation flipped) while at the anode reduction occurs (equation did not flip). can someone please give me some insight on...
I'm currently studying for 3U and was wondering how often does the HSC actually ask General Solution questions? I've never really studied them or done any questions on them, but they seem extremely rare.
Our scientific thinking about evolutionary relationships between animals has changed dramatically as a result of advances in technology. For example technologies such as biochemical analysis uses DNA-DNA hybridisation to compare amino-acid chains between other organisms. From previous knowledge...
A new non-infectious disease has been discovered in people in some aged care homes.
Outline at least FOUR features of an epidemiological study that could be used to
identify the cause of this disease.
Paleontology is the study of fossils and extinct life form. These fossil records show the history of life on earth. For example the oldest fossil of cyanobacteria at 3.5mya and earliest reptile 350mya. They show the change over a long period of time (Darwin's Gradualism) between organisms and...
They absorb salts because there is very little salt in their environment. Yes you're correct this salt concentration would attract even more water via osmosis, however this is why freshwater fish produce copious amounts of dilute urine to counteract this.