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How many molecules of water are present in 5g sample?

In order to measure the amount of water molecules, we need to use following equation: n = m / M where n is the amount of water molecules in molesm is the mass in grammesM is the molecular mass of water Water...
Answered by • Chemistry tutor
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How can poetic techniques be used to represent different themes

Setting can be represented through vivid imagery in the language. Repetition, assonance and alliteration can help to increase pace, which can help to create an atmosphere of fear or excitement. Symbols help ...
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Décrivez vos parents.

Mes parents s'appellent Paul et Sophie, ils se connaissent depuis longtemps! Ils habitent chez moi en France dans notre grande maison. Ils sont vraiment gentils et je les aiment beaucoup.
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Answered by Ewan W. • French tutor
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Which of the following was of greater importance in the early growth of Islam: the personal contribution of the Prophet Muhammad, or the politial circumstances of Medina in the early seventh century?

These 10 mark questions are straightforward to answer as long as you use a clear structure: no introduction, one paragraph giving reasons why the first specified factor was the most important, one pargraph d...
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Answered by Thomas L. • History tutor
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A curve C is mapped by the equation ( 1+x)(4-x). The curve intersects the x-axis at x = –1 and x = 4. A region R is bounded by C and the x-axis. Use calculus to find the exact area of R.

First draw the curve. Figure out and write the integration problem. Integral 4 -1 (1+x)(4-x) dx.Expand integral 4 -1 4 + 3x - x 2 dx.= 4 -1 [4x + 3x 2 /2) -x 2 ] = 16 + 30 - 64/3 - (-4 + 3/2 + 1/3)= 125/6
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Answered by Vishesh D. • Maths tutor
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