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Can someone help me with this please, I don't have any solutions

Can you guys help me with this? Write down the reaction between sodium and sulfuric acid. The solution is then evaporated with a bunsen burner. He then weighs the salt left behind. Calculate expected mass of salt if reaction was complete. 2Na(s) + H2SO4 (aq) -> Na2SO4(aq) + H2(g) n(Na) = 4...

Oh, yeah I was a little confused with the 500mL and didn't know whether to use concentration formula or not. Thanks btw

Can anyone help me with this? How many moles of aluminium ions and sulfate ions are there when 34.2g of aluminium sulfate is dissolved in 500mL of water?

Re: Tony Abott Greatest prime minister we ever had, even better than John Howard

Just wondering, this teacher keeps telling me that you should absolutely get 100% in mechanics because it is a "bs topic" as he so eloquently puts it. Do you guys find this topic easy? Because I'm have so much troubles, and its actually making me feel terrible at myself. Is there any advice you...

20. The mass of this gaseous compound filled a 1.35L flask to a pressure of 100kPa at 298K was 3.31g. Calculate the molecular weight of the compound. n = 1.35 / 24.79 = 0.054 moles n = m/M M= 3.31g /0.054 M= 61.3g

19 (last question): A mixture of 100mL carbon dioxide (CO) and 100mL oxygen is sparked to cause reaction (to form carbon dioxide). 2CO(g) + O2(g) - 2.CO2 (g) Calculate the change in volume resulting from the reaction. (All volumes are measured at constant temperature and pressure). n(O2) =...

I'm doing a practice exam and I'm unsure of my solutions, would anyone care to provide their solutions? 16. A student analysed a sample of Bondi beach sand and found it contained 5.2%, 11.3% sodium chloride with the balance being silicon dioxide. Calculate the mass of silicon dioxide in a 135g...

Is prelim exam week -_-

Next week -_-

1. The cubic equation x^3 + ax^2 + bx + c = 0 has roots -(alpha), alpha, 1/alpha (i) Show that ac = -1 (ii) Show that b + c^2 = 0

Can you take me through your thought process? What made you think to do all of that?

1. Express tan(A+B) in terms of tanA and tanB 2. Hence show if A, B and C are the vertex angles of a triangle then tan A + tan B + tan C = tanA x tanB x tanC

Nah listen, watch Breaking Bad. It's definitely great, filled with plot twists lmao. Suits is very good too actually, one I'm watching right now is OITNB

Anyone can help?

Can anyone do this question (it's a last question in the exam). Question: Answer: I'd be grateful if anyone can help me, I think I can find what C1 is but having troubles finding C2

Oh can you also help me with this exam question? There's no solutions, and I have to check to make sure if someone has got the same as I did (16) A student completely reacted some solid iron (II) sulfide in 200mL of 0.5M hydrochloric acid, forming iron (II) chloride in solution and collecting...

Does helium atom have the same electronic configuration as hydrogen atom??

Question is: Aluminium oxide can decomposed by electrolysis. If 5kg of aluminium oxide yields 2.65kg of aluminium on electrolysis. Calculate the percentage composition of aluminium oxide.