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What is an isotope?

Isotopes of an element exist when the atoms of an element have different numbers of neutrons, or in other words the same atomic number but a different mass number.

Answered by Matthew T. • Physics tutor

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What is the difference between speed and velocity?

Speed is how fast an object is moving, whereas velocity is an objects speed in a given direction.

Answered by Matthew T. • Physics tutor

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Find dy/dx for y=5x^3-2x^2+7x-15

Step 1: To differentiate an equation there is a simple rule to follow. For y=axⁿ dy/dx=anx^n-1. so for an example y=x³, dy/dx=3x^2.Therefore we just apply thi...

Answered by Matthew T. • Maths tutor

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Solve the equation ((2x+3)/(x-4))-((2x-8)/(2x+1))=1

Step 1: Multiply everything by x-4 to give

(2x+3) - ((2x-8)(x-4)/2x+1)=(x-4)

Step2: Multiply everything by 2x+1 to give

(2x+3)(2x+1)-(2x-8)(x-4)=(x-4)(2x+1)

Answered by Matthew T. • Maths tutor

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Why doesn't the concentration of products or reactants change when a reaction is at dynamic equilibrium?

At dynamic equilibrium in a closed system (for example, in the Haber process to make ammonia), both the forward and backward reactions continue to occur. However, both reactions happen at the same rate...

Answered by Rose A. • Chemistry tutor

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