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Oh right, they're Isotopes. My bad. But does the superscript of 2 apply to just the Hydrogen? So that Heavy water would mean there's 2 of the same Hydrogen Isotopes mixed with regular Oxygen?

I meant just normal 2H2O (without superscript). There wouldn't be a difference from that and H2O would there? Also, what does the superscript for 2H2O mean (heavy water)?

So if we were hypothetically trying to "create" water by using H2 + O ---> H2O, would we be at risk of getting injured due to Oxygen being very reactive and unstable? Also, is there a difference between 2H2O and H2O (property wise)?

Ok, so in a nutshell; Oxygen doesn't necessarily have to be Diatomic in Chemical reactions even though they're found to be Diatomic in nature. Sometimes in a Chemical reaction it can be in a monoatomic form?

I get it now thanks. Also say we were trying to "create" water. Would we do H2 + O ---> H2O or would we do 2H2 + O2 ---> 2H2O? Since Oxygen is a Diatomic gas, wouldn't the second option make sense? You mentioned electronegativity, I understand that part; but don't get how in "nature" if Oxygen...

Oh sorry, I meant 2H2O.

But then how come the monoatomic/diatomic gas come into play? If Oxygen is found diatomic in nature, why is the formula H2 + O instead of H2 + O2? Oh and the heavy water thing came up was when I searched up 2H2O on Google and the Wikipedia page for "Heavy Water" was the first thing that came up.

Ahh I got it now, thank you!

So we all know that if we dropped a feather and a bowling ball from the same height, the bowling ball would land much quicker since the feather has a larger surface area and the air molecules make it "float" more (that's what I learnt from my Science teacher, so correct me if that's wrong). Now...

So since Oxygen is a Diatomic gas, how come the Chemical Equation to obtain H2O is H2 + O ---> H2O? Why isn't it H2 + O2 ---> H2O? I understand that the second equation is unbalanced and the product would be 2H2O, but that product isn't normal water anymore; it's something called "Heavy water"...

Right, will we learn more about why elements are at their current state in room temperature in Year 11/12?

Thanks. Do you know why Mercury is a liquid at room temperature though, or why it's not classified in the Noble Gases section (ik it's a liquid, but it has a stable valence shell)?

So does that mean Mercury's intermolecular forces are quite weak since it's a liquid at room temperature? Thanks, I understand now. Why does Oxygen have to be the fuel in a fire? How come it's not Nitrogen or another gas (Nitrogen is far more reactive)? Could you explain how thermal...

How does the unstable valence shell determine the Boiling/Melting point (this is more based on bonds), electrical conductivity and properties for an Element? For example, Hydrogen is highly flammable. But people say it's due to the unstable valence shell. How does the unstable valence shell...

I understand that Mercury has a full outer 6s shell, meaning it doesn't want to share Electrons. Firstly, why isn't it a Noble gas then? Aren't noble gases the most stable elements (Ik that Mercury isn't a gas at room temp, but still). Secondly, I tried searching up why Mercury is a...

There are these: https://mrtelco.com/blog/top-9-nbn-compatible-modem-routers-under-100 There's also this: https://www.jbhifi.com.au/computers-tablets/networking/netgear/netgear-d6200-802-11ac-wifi-modem-router/417655/ which lasts for a year or so, but works decently, pretty expensive though for...

Thanks for your help. Do you know why (h,k) is the Point of Inflection for Cubics though?

Thanks for the link, think I've got it now. I then found a similar solution to the Circle problem in a MX1 book which helped as well. Do you know any websites explaining for as to why (h,k) is the POI for Cubics?

So when it's the centre, we imagine it being (0,0)? Why/how is it that (h,k) determine the centre in a circle?

As the title states, why is (h,k) the POI (Point of Inflection) and Centre in Cubics and Circles? I understand why they're there for Parabolas (have to find the maximum/minimum value), but what's the reasoning behind Circles and Cubics? For a Cubic in y = a(x-h)^3 +k form, there are no maximum...