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pH and Kw question: A student dissolves 1.75g of a drain cleaner (based on NaOH) in water and makes the solution up to 100cm3. The student measures the solution pH as 13.60. Determine the percentage of NaOH in the drain cleaner, in terms of mass (g).

[H+] = 10-pH, so [H+] = 10-13.6

LN
Answered by Laura N. Chemistry tutor
7255 Views

Cube roots of 8?

8 traditionally has 1 cube root. 2. This is only the real root. It has 2 more complex roots!How can we see this?Consider a vector on the argand diagram. If we square it. What happens to it's magnitude and...

VJ
3533 Views

Find the gradient at x=1 for the curve y=2x*e^2x

The answer to this question is in two parts. We firstly must find the derivative of the function y=f(x) with respect to x, and then substitute the value of x given in the question to find the gradient at ...

DD
Answered by Dominic D. Maths tutor
4556 Views

Describe the process of atherosclerosis and the effect it has on the properties of the blood vessel

Atherosclerosis occurs when the endothelium of a blood vessel becomes damaged. This may due to various reasons such as high blood pressure or toxins from cigarette smoke. This causes an inflammatory respo...

LT
Answered by Laura T. Biology tutor
2489 Views

What is sonata form, and how can I identify it when analyzing a piece of music?

Sonata form is often found in music of the Classical era, for example in the string quartets or symphonic movements by composers such as Mozart, Haydn, and Beethoven. Sonata form is essentially a three-pa...

KM
Answered by Katrina M. Music tutor
4620 Views

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