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Bromine has an atomic number of 35 but has two stable isotopes- bromine-79 and bromine-81. Given that 51% of bromine atoms are bromine-79 and 49% are bromine-81%, work out the relative atomic mass of bromine to the nearest whole number.

What is an isotope? (To ensure the students basic understanding on isotopes) Isotopes are different atomic forms of the same element, which have same number of protons but different numbe...

MS
Answered by Mehek S. Chemistry tutor
21150 Views

Can you explain the different ways heat can travel?

Heat can travel through 3 different processes: conduction, convection and radiation. Conduction is caused by atoms bumping into each other, transferring energy and therefore heat. An example of this would...

JG
Answered by Jake G. Physics tutor
3714 Views

Explain why 17th century Puritans were opposed to the theatre.

The conservative sect of Protestantism disliked theatres because they were seen as immoral places harbouring anti-Puritan ideas and groups. This immorality was manifested in criminal groups often found in...

PH
Answered by Phoebe H. History tutor
17199 Views

¿Ser o Estar? When to use ‘SER’ and when to use ‘ESTAR’ in Spanish?

Both ‘SER’ and ‘ESTAR’ are equivalent to the English to be. However, in Spanish, they have very different meanings and usages. In general, ‘SER’ is used to describe perma...

CS
Answered by CHARLOTTE S. Spanish tutor
2128 Views

Describe to me the pupillary light reflex, and how the differences in light intensity cause this change.

Pupils can either dilate or constrict in response to changes in light intensity.

In very bright light - the eyes constrict - as a protective mechanism
In very dull light/dark conditions - ...

AM
Answered by Aaminah M. Biology tutor
5199 Views

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