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What are the components of an atom and what are their properties?

An atoms is composed of a central NUCLEUS, with ELECTRONS occupying shells, moving around the nucleus.

The nucleus is composed of PROTONS and NEUTRONS.

The PROTON...

Answered by Axel R. • Chemistry tutor

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z = 3x + 5y, if x = 7 and z = 41, what is 2y?

z = 3x + 5y 41 = 3(7) +5y 41= 21 + 5y 20 = 5y 4 = y y = 4 2y = 8

Answered by Hannah A. • Maths tutor

4124 Views

How would you correctly carry out a flame test, and what colour would potassium yield, and what colour would lithium yield?

Answer First a wire loop is cleaned with diluted hydrochloric acid, which is then dipped into the sample metal or solution. This is then held over an open flame and the colour emitted is ...

Answered by Charlotte K. • Chemistry tutor

8806 Views

How can I solve quadratic equations by completing the square?

When we have a quadratic (ax²+ bx + c = 0) we can "complete the square" to solve for x. For example x²+ 8x + 7 = 0. First look at the x²+ 8x, in particular th...

Answered by Thomas B. • Maths tutor

3750 Views

Explain the pull factors of counter-urbanisation.

Counter-urbanisation is the movement from city to rural area (centrifugal movement). Firstly, it is quieter in suburban/rural areas with less traffic, congestion and higher living standards. This is espec...

Answered by Svenja S. • Geography tutor

11763 Views