Search results

this is a qu in some sheet a soln was known to contain either sodium carbonate or sodium chloride. samples of the soln gave bubbles of gas with HNO3 but no ppt with AgNO3. which of the anoins is present? Well, its obviously carbonate ions right? but i dnt get how it does not form a ppt with...

Hi, can someone please help me with this question. Firstly, I don't know where to start. And secondly, I'm not sure if I even labelled it right. xD The answer is 3091m³

I can't seem to get any of the answers. ΔH/m x M = 2021 Given m = 0.06 and M = 74.12. Find ΔH then sub it in the formula? ΔH= -mcΔt Am i supposed to do this or not. I keep getting 21 >.< Can someone please show me the proper way how to solve it.

A projectile is launched with a velocity of 200m/s at an angle of 45° to the horizontal. Calculate: a. the maximum height reached: v²= u² + 2aΔy 0 = 200² + 2(-9.8).Δy -200² = -19.6Δy Δy = 2040.8m Δy = 2040.8/2 Δy = 1020 m b. the time of flight: ...

A monic cubic polynomial when divided by (x²+4) leaves a remainder of (x+8) and when divided by x leaves a remainder of -4. Find the polynomial in the form ax³+bx²+cx+d.

The complex number z=x+iy, x and y real, is such that | z-i | = Im (z) Find the locus of the point representing z. Answer is y=1/2.(x^2+1)

Hey guys, can anyone help me with these tricky questions.

Is 'cumulative listing' a technique? Or is there another word for it?

Explain why a calorimeter is needed to accurately measure the molar heat of solution.

Two signals X and Y are transmitted simultaneously to a receiver 50 Km away. Signal X is modulated visible light and is transmitted by optical fibre. Signal Y is modulated Infrared Radiation and is transmitted in air. The refractive index of optical fibres glass is 1.5 and air is 1.003. Both...

For an english assignment I have to compose a soliloquy that conveys a particular character's perspective on power in the text, and including language technqiues. I chose to do Emilia after witnessing Othello’s anger with Desdemona when she cannot produce the handkerchief he had given her. She...

What would you include in your final paragraphy in an essay? Any useful tips?

Landscape Essay I am in year 11 and currently doing "Landscapes" as an area of study in English Advance. The question is: Choose two poems from your prescribed text and two related texts. How have these texts helped you to understand the inter-relationship between people and...