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A student reacts 50.0cm^3 of 2.00mol dm^-3 HCl with 25.0cm^3 NaOH. What is the concentration of NaOH?

n(HCl) = 0.05 dm^3 x 2 mol dm^-3 = 0.1 mol Ratio HCl : NaOH = 1 : 1 = 0.1 mol : 0.1 mol c(NaOH) = 0.1 mol / 0.025 dm^3 = 0.4 mol dm^-3
SW
Answered by Sam W. • Chemistry tutor
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Given that y = ((4x+3)^5)(sin2x), find dy/dx

First of all, we have to use the product rule, since two things are multiplied together. The product rule states that d/dx (u*v) = vu' + uv' Let u = (4x+3) 5 v = sin(2x) Now, to find u' and v' we have to fin...
JN
Answered by Juozas N. • Maths tutor
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‘Women struggle to find an identity in a world dominated by men’. By comparing The Great Gatsby with Sister Carrie, discuss how far you agree with this view. (30 Marks)

In America during the late nineteenth and early twentieth centuries, women had a very restricted role within society. Their lack of access to education limited their capability to interact with society in a ...
SO
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Compare the significance of isolation in two texts you have studied

As a result of being isolated, both Brick, from Cat on a Hot Tin Roof, and Frank, from Revolutionary Road, are profoundly damaged individuals, subsequently leading to self-hate and the misuse of their wives,...
LD
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Explain the passive transport mechanisms across a cell membrane, differentiating between simple diffusion and facilitated diffusion.

Substances move down a concentration gradient in passive transport, meaning that no energy input (ATP) is required. Hydrophilic molecules will pass down the membrane using facilitated diffusion, as they cann...
RP
Answered by Rares P. • Biology tutor
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