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titration calculation: 35cm3 of Hydrochloric Acid reacts with 27.5cm3, 0.3mol/dm3 NaOH. What is the Concentration of the Hydrochloric Acid?

  1. Write out what you know:

    HCL - VOL: 35 --- CONC: (x) --- MOL: (x)
    NaOH - VOL: 27.5 --- CONC: 0.3 --- MOL: (x)

  2. Realise what you can work out - Mol of NaOH in ...
GK
Answered by Ghazn K. Chemistry tutor
4980 Views

menstrual cycle and contraceptive pills

 FSH 

it causes an egg to mature in an ovaryit stimulates the ovaries to release the hormone oestrogen.

Oestrogen

it stops FSH being produced - so that only one egg matures in a cycle...

GK
Answered by Ghazn K. Biology tutor
3484 Views

How do I tackle an unseen poem in an exam?

The idea of an unseen poem can be very intimidating, especially when there is a time limit. To analyse an unseen poem begin by reading the poem in order to get a general understanding of the text, and sta...

PR
11786 Views

Find an equation of the straight line that is perpendicular to the straight line x + 3y = 7 and that passes through the point (4,9).

y = 3x - 3

VP
Answered by Vikesh P. Maths tutor
3500 Views

solve: x^2= 4(x-3)^2

x^2= 4(x^2 - 6x + 9)

x^2= 4x^2- 24x + 36

3x^2 - 24x + 36= 0

(x-2)(x-6)=0

x= 2 or x=6

GK
Answered by Ghazn K. Maths tutor
3442 Views

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