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could not k be like 3 or something though?

i got the answer. i left myself with the following equation at the end: n = 63k -48 -x (where k is an interger - the stoichiometric ratio in the neutralisation) and just by guess work i figured out if x is nitrogen x = 14 hence n=1 which happened to work with the stoichemetric ratio is there a...

yeah 7.6 g is right

yo. the answer is actually 7.62 kg? actually did something stupid

n (limestone) = \frac{10}{40+12+16+16+16} = \frac{1}{10} n (HCl) = cv = \frac{100}{1000}*2 = 0.2 Now CaCO3 + 2HCl ---> CaCl2 + H2O + CO2 Therefore CaCO3:HCl 1:2 therefore twice as many moles of HCl are needed Hence there are zero moles of HCl left over ??

sorry, that doesn't make a lot of sense to me. i understand the polarity coming from the central electronegative oxygens but why would this dissolve organic (i.e. non polar) liquids

TOMS was replaced by OMI in 2000. haha

Why are esters good solvents?

86.90

sorry, i meant raw 72/84 and raw 100/120

yeah, it seems ridiculous that a 72 in mx1 aligns to the same mark as 100 in mx2 a 72 is mx1 is about 1000 times easier

Any idea what a 70-72 will align to? Also, I know this is the wrong place but any idea what 98-100 in extension 2 will align to? Thanks again ♥

Re: How did y'all find it!! Footy

what happens when eccentricity-> infinity you get two straight lines x=+-a ?

anyone else think there was a mistake in the test? in 5ai i swear they fucked up resolving of vectors they used theta to obtain there result instead of 90 - theta and hence sin would become cos etc i ended up just using theta to get there result but i swear they did it wrong

thanks for responding. literally the easiest paper i have ever done. 100%

https://www.stmarys.nsw.edu.au/library/secured/HSC-TRIALS/The%20Scots%20College%202007/TSC_07_HSC_Ext1_trialandSoln.pdf

any help with the question though haha?

haha yeah so nice. "The Scots College" Found it in this directory: https://www.stmarys.nsw.edu.au/library/secured/HSC-TRIALS/ 2007 MX1 Paper

I keep getting acceleration = 3ms^-2 But the answer says 3/4 ms^-2 Anyone care to help? Thanks ♥