MYTUTOR SUBJECT ANSWERS

1967 views

A metal oxide has a relative formula mass (Mr ) of 81. The formula of this metal oxide is MO. Given that the relative atomic mass (Ar ) of oxygen is 16, what is the metal in the metal oxide?

The formula of the metal oxide is MO, which means there is only one oxygen atom bonded to the metal. The Mr of a compound is the sum of Ar of the elements that make up the compound. So, from this we can construct a equation.

Mr of MO = Ar of oxygen + Ar of metal

81 = 16 + Ar of metal

We can then rearrange the equation to give the Ar of the metal.

Ar of metal = 81 - 16

Ar of metal = 65

By looking at a periodic table we can see that the metal that has an Ar of 65 is Zinc. 

Jack T. GCSE Chemistry tutor, A Level Chemistry tutor

2 years ago

Answered by Jack, a GCSE Chemistry tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

210 SUBJECT SPECIALISTS

£36 /hr

Lorenzo C.

Degree: Biomedical Sciences with Honours in Infectious Diseases (Bachelors) - Edinburgh University

Subjects offered: Chemistry, Physics+ 1 more

Chemistry
Physics
Biology

“Hey! I'm Lorenzo and I study Biomedical Sciences with an honours in Infectious Diseases at the University of Edinburgh. I'd be happy to help you with Biology, Chemistry and Physics at GCSE or at A-Level.  I have previous experience tu...”

£24 /hr

Sarah T.

Degree: PGCE (Masters) - Durham University

Subjects offered: Chemistry, Psychology+ 1 more

Chemistry
Psychology
Maths

“About me: In 2015 I graduated from Durham University. Whilst there I had the most amazing time studying Psychology, Chemistry and Education. Science has always interested me and I find it fascinating how we can use scientific methods ...”

£18 /hr

Mahreen B.

Degree: Medicine MBBS (Other) - University College London University

Subjects offered: Chemistry, Maths+ 3 more

Chemistry
Maths
Human Biology
English Literature

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok