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What is a rate of reaction? How can we calculate the rate of reaction?

Rate of reaction is a change in concentration of a reactant or product, per unit time, measured in dm 3 s-1. You can calculate the rate of reaction from the graph- plot the graph of concantration of reactant...
LB
Answered by Laura B. • Chemistry tutor
4783 Views

What is the equation of the curve that has gradient dy/dx=(4x-5) and passes through the point (3,7)?

To answer this question, we must use our knowledge of integration and differentiation. First, we look at the information given to us. We have been told that the gradient of the curve is given by dy/dx=(4x-5)...
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Answered by Samradnyee K. • Maths tutor
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Define the terms atomic number and mass number

The atomic number, Z, is the number of protons in the nucleus. The mass number ,A, is the total number of protons and neutrons in the atom.
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Answered by Laura B. • Chemistry tutor
8963 Views

Solve the following simultaneous equations to find the values of x and y: 3y - 7x = 15 & 2y = 4x + 12

Equation one: 3y - 7x = 15 - Double it and re arrange 3y - 7x = 15 goes to 3y = 7x + 15 goes to 6y = 14x + 30 we name this equation 3 Equation two: 2y = 4x +12 - Triple it. so..6y = 12x + 36 we name this equ...
IP
Answered by Imogen P. • Maths tutor
4669 Views

How do I approach an unseen poem?

Start with looking at the form of the poem: things like the number of stanzas, how many lines they are composed of, and how they are arranged, as well as the overall length. Do not just state the arrangement...
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Answered by Iwan E. • English tutor
2090 Views