Recent content by ASidd

But what happens in liquid chromatography? Are the molecules being analyzed not liquids?

I am researching mass spectrometry for my school assignment and I seem to be getting contradictory answers. Some websites say that the sample used in mass spectrometry is definitely vaporized before use but other websites state that it can work on liquids e.g. in liquid chromatography/ mass...

Homework Statement (9x-8)/ 2(sqrt(3x-4)) Homework Equations Vu'-Uv'/v^2 i.e. quotient rule The Attempt at a Solution I get V=2(sqrt(3x-4) u=9x-8 V'=3((3x-4)^-1.5) u'=9 When I put this into the equation and solve I get 9x-8(sqrt(3x-4))/6x-8 But the answer...

No I used phenolphthalein indicator. I thought in titration's it's kind of expected that an indicator will be used;hence didn't mention it in my previous post.

It's just a simple titration. Measure 25 mL of NaOH solution (with unknown concentration) using a pipette and titrate it using 0.05M oxalic acid.

I am doing titration of NaOH with oxalic acid at school and none of my results are close together at all. I got 1. 26.6 mL 2. 27 mL (although I want to discount this since I wasn't very careful with this) 3. 25.5 mL 4. 26 mL 5. 25.3 mL (For this titration I realized that there was some...

This is what we have to do for our chem prac 1) Dissolve 2g of NaOH in 500 mL of water to make a solution 2) Since NaOH cannot be used directly as standard solution titrate it with a standard oxalic acid solution 3) Calculate concentration of NaOH 4) Now use this standardised solution of...

Homework Statement My physics teacher today said that the Earth exerts the same amount of gravitational pull on sun;as the sun exerts on the earth. Is this really true? Homework Equations There is no equation. The Attempt at a Solution I am very confused with this. How can the...

Okay this maybe a silly question but I had to ask. In school we are making standard solution to perform a titration. To do this we measured in grams a sample of oxalic acid and mixed in water and then made the solution up to mark in a volumetric flask. When I did my titration; as I was...

Okay thanks. Also do all non-metallic oxides have to be polar molecules in order to form an acid within water?

I was also wondering when sulfur trioxide dissolves in water why does only one of the oxygen atoms in sulfur trioxide attaches to a hydrogen atom? why not the other 2

So h+ so4-==> h+ + so4-2?

Homework Statement I understand how metallic oxide dissolve in water to produce OH- ion due to high electronegativity of oxygen. But I am having trouble understanding how non-metallic oxide dissolve in water to form acid? For Homework I have to explain the reaction of Sulfur trioxide in water...

Homework Statement A positive charge is moving straight ahead in a magnetic field going out of page. What is the direction of force on the positively charged particle? The Attempt at a Solution I know that you use the right hand rule where fingers show direction of force. But I'm...

What I'm trying to ask is how does turning a coil create electricity? I know how the coil turns but how does the turning go on to give electricity in a generator?