Search results

I've posted two unanswered questions here.

I've got Skrzynecki for belonging. I've learnt 3 poems well, and two related texts well. I know about 2 quotes for each of the other poems.

Thanks :) I meant limestone not sandstone!

For my question (Shipwrecks if any of you do it): i) Name of method for removing salt from an artifact recovered from a wreck (1 mark) ii) Explain, with reference to two examples, chemical procedures used to clean and preserve artifacts from wrecks (5 marks) For those who don't do...

Acid rain is mostly formed from the acidic oxides SO2 and NO2. SO2 is formed naturally from volcanic eruptions and is formed industrially during the combustion of many fossil fuels. Sulfur dioxide reacts with water to form sulfurous acid, which reacts with oxygen to form sulfuric acid SO2g +...

I've learnt 3 poems well, and two related texts well. I know about 2 quotes for each of the other poems, and I vaguely know another related text.

Thanks for the feedback :)

When cleaning the spill of an unknown liquid (either acidic or basic), it is important to carefully chose a suitable chemical in order to minimise any damage. One such chemical that may be used is Sodium Hydrogen Carbonate (NaHCO3). This chemical is particularly useful in cleaning spills of...

The more I read this thread, the more I realise how little I know :frown2:

Isn't it qualitative because different people will see it at different lengths. It requires the human eye to determine how deep it should go. To me that sounds like a quality. You may be right though.

So all I need to do is change mine to Br2 (aq) ? or is it a different molecule?

As QZP said, the Secchi disc is a qualitative test. A quantitative test would be (I think - could someone please confirm), evaporating the water and weighing the solid remains.

In a darkened lab (absence of UV light), a test tube is filled with 5ml of cyclohexane and a second test tube is filled with 5ml of cyclohexene. 3 drops of (brown) bromine water is added to each tube. A stopper is placed on top, and the test tubes are both shaken. The test tube containing...

No questions? I'll get the ball rolling again. Describe both a quantitative and a qualitative test for either hardness or turbidity of water (4 marks)

Is that even in the syllabus?

Describe how atomic absorption spectroscopy is used to detect concentrations of metal ions in solution. (4 marks)

30mol H2 produced. therefore 6xeq2 and 4xeq1 No mol CO= 6(12) + 4(7) = 100mol Is this right?

Thank you very much! For my question: Examine the impact of fiscal policy on Australia's level of national savings (4marks)

As far as I'm aware, if you do extension one maths, 1 unit will count of 3u and 2 units will count of 2u. If you do extension two maths, 2 units will count of 3u and 2 units will count as 4u

1: Inflation decreases the potential for deflation (prices lowering), which acts as a constraint for economic growth. 2: Inflation often leads to increased wages, which may push individuals into a higher tax bracket, resulting in more government revenue by the process of fiscal drag/bracket...