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Relationship between moles and Avogadro's constant

Moles equation is moles= mass/RFM Avogadro's constant is 6.x 10 23 . 1 mole means 6x 10 23 atoms/molecules. e.g. 2 mole of Cu weighs 128g. What is the weight of 1 Cu atom? 2 moles is 2x 6x10 23 atoms = 1.2x1...
JJ
Answered by Joshny J. • Chemistry tutor
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Integrate the following expression with respect to x by parts: (2*x)*sin(x)

The integration by parts formula: S:u dv/dx = u v - S:v*du/dx, where S: means "Integral of with respect to x" Let 2*x be u and sin(x) be dv/dx So du/dx =2 and v= -cos(x) So S:(2 x) sin(x) = (2 x) (...
DP
Answered by David P. • Maths tutor
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Translate the following phrases from English to French, and then convert them from the active voice to the passive voice. The cat eats the mouse. The car hit the old man on the road. The storm destroyed many buildings overnight.

The cat eats the mouse -> Le chat mange la souris -> La souris est mangée par le chat. The car hit the old man on the road -> La voiture a frappé le vieil homme sur la route -> Le vieil homme sur...
DP
Answered by David P. • French tutor
2312 Views

Quels sont les problèmes qui nous touchent de nos jours?

I will be looking for a certain level of French i.e how they conjugate tenses (Il faut que nous sachions), what person they use (je,tu, il, nous, vous, ils). They will need to have a good understanding of vo...
CM
Answered by Ciara M. • French tutor
2767 Views

When I integrate by parts how do I know which part of the equation is u and v'?

To determine which function is your u value in the by parts equation, you can use the acronym LATE to find the order of precedence for this value. LATE stands for: Logarithmic functions Arithmetric functions...
BA
Answered by Ben A. • Maths tutor
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