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What is the Avogadro constant and what are moles?

The Avogrados constant the number of atoms in a mole. This is 6.02 x10^23. The number of moles are calculated through diving the mass (g) by the relative molecular mass of an element.
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Answered by Devina T. • Chemistry tutor
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How do you add fractions? And how do you multiply fractions?

Addition of fractions involve the finding of a common denominator. This would aid the addition. The multiplication of fractions can be made much easier through finding if they can be made smaller through bas...
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Answered by Devina T. • Maths tutor
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What is osmosis?

This involves water molecules which are transported from an area of high concentration to a low concentration. This transportation is termed diffusion. This would occur through a partially permeable membrane.
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Answered by Devina T. • Biology tutor
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The line L has equation y=5-2x. Find an equation of the line perpendicular to L, which passes through the point P (3,-1).

The gradient of the line L is -2 so the gradient of the line perpendicular to L will be the negative reciprocal of -2 which is 1/2.The equation of the line perpendicular to L will be y=mx+c where m is the gr...
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Answered by Katie N. • Maths tutor
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Choisissez la bonne conjugasion da la phrase suivante;

Bien qu'elle soit certaine de les avoir faits, le professeur ne croit pas que Sophie; a fait ses devoirs fait ses devoirs ait fait ses devoirs
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Answered by Glen O. • French tutor
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