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Calculate the value of 2^(–3) as a fraction in its simplest form.

To calculate the value of 2^-3first we know that a negative exponent is equivalent to the inverse of the same number with a positive exponent.

Therefore 2^-3= 1/2

Answered by Joseff S. • Maths tutor

181765 Views

Calculate the largest share when £400 is shared in the ratio 1 : 2 : 5.

To calculate the largest share, first we need to find out how much each part that makes up a share is worth.

To find out how much the smallest part is (i.e 1 part), we divide the value £4...

Answered by Joseff S. • Maths tutor

23933 Views

Explain why average bond enthalpies can be used for cyclohexane but not for benzene

Benzene has a resonance structure while cyclohexane consists of only single bonds of the same length. Benzene's resonance structure means it has intermediate bond lengths and strengths. This means aver...

Answered by Chloe M. • Chemistry tutor

3679 Views

Calculate the pH of a 4.00 x 10^-2 mol dm^-3 solution of Ba(OH)2

The easiest way to answer this question is by using the equation pH + pOH = 14.

Firstly, we need to work out the number of moles of OH^- in the solution. As the formula for Ba(...

Answered by Chloe M. • Chemistry tutor

12836 Views

In a formal situation, how do I introduce myself in spanish?

In formal contexts, such as job interviews or academic presentations, you shouldn't use slang or coloquial phrases, but a polite structure, such as: "Mi nombre es..." instead of "Me llam...

Answered by RENE R. • Spanish tutor

2864 Views