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$ Let z_1$ $ and z_2 = etc \\ \\ LHS = $|\frac{z_1}{z_2}| \\\\ ~~~~~~~~= | \frac{r_1 cis\theta_1}{r_2 cis \theta_2}| \\ \\~~~~~~~~ = \frac{r_1}{r_2} \\\\ ~~~~~~~~= \frac{|z_1|}{|z_2|}

unfortunately i dont, but i have close friends who physics and tell me that physics is harder than chem, some others say chem is harder than physics. so its not just u that thinks that physics is harder than chem

its not just u

I = \int \frac{(2x+1)}{(3x^2+3x-2)}dx = \frac{1}{3}\int \frac{6x +3}{(3x^2 + 3x - 2)}dx = \frac{1}{3}ln(3x^2 + 3x - 2) +C \\ \\ $Because $\int \frac{f'(x)}{f(x)}dx = ln[f(x)] +C

parents might not let

yes it is, i wish i was there...

Industrial is more conceptual to shipwrecks Just like acidic environment (module 2) is more conceptual to production of material (module 1) and/or chemical monitoring and management (module 3)

U need to rote learn in some point of ur science life or u'll forget the information u've learnt (eg. purification of water - screening, aeration, etc) Saying that industrial concepts are definitely not hard is subjective

shipwrecks has calculations. Look did u read my post? If u found module 2 (acidic environment) hard and the HABER PROCESS (of module 3), dont do industrial. ALSO, if u dont understand Le-Chatelier's Principle, dont do industrial Shipwrecks in comparison is easier in my opinion because its...

Industrial - requires a lot of understanding (like acidic environment - module 2) Shipwrecks - some understanding (less than industrial), quite a lot of rote learning required (which is EXTREMELY BORING) in my school, one class does industrial and the other does shipwrecks. I am studying...

Notice its copper (I) NOT copper (II) Write the equation of: metal oxide + oxygen --> metal oxide 4Cu_{(s)} + O_{2 (g)} \rightarrow 2Cu_2O_{(s)} You are provided with the mass of copper (I), the rest is very easy, if not look below (in white): Step 1: Find the moles of copper (I) Step 2...

No, Antoine Lavoisier stated that acids contained oxygen which was very wrong (could not explain why hydrogen halide compounds acted as acids even thought they did not contain an oxygen atom in its structure, could not eplain why metallic oxides when dissolved in water formed base instead of...

nvm

ok i understand thanks ahh i cant believe i could not see that.. thanks

oh sorry, un <3, thanks for noticing that!

Hi, could anyone please check my working out? Question: $If $u_1 = 1$ and u_n = \sqrt{3u_{n-1}}$ $ for n \geq 2,$ $ show that u_n <3$ $ for $n\geq 1$ and deduce that u_{n+1} > u_n$ $ for n\geq 1 1. u_n = \sqrt{3u_{n-1}},$ RTP: u_n <3$ \\ $Show true for $n = 2, u_2 = \sqrt{3u_1} = \sqrt{3} <3...

hahahahahahaa! damnnnnnn!!

Perfect

thanks! n = 0.21.. = 0.2moles (1sf)

In chemistry, its significant figures, so u look at the question and the data given, and pick out the data that U HAVE USED (in this case the 5 grams of magnesium), how many significant figures is 5? Its 1 sig fig, so ur answer should be in 1 sig fig so n = 0 (1sf) lol this is a bad question...