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Calculate the relative molecular mass of CaCO3. (relative atomic mass (Ar): C= 12, Ca= 40, O= 16)

Number of atoms
Ca x1 => 40x 1= 40
C x 1 => 12x1 = 12
O x 3= 16 x 3= 48CaCO3
RMM= 40 + 12 + 48= 100

RM
Answered by Roxanne M. Chemistry tutor
29009 Views

How do you form the passé composée?

The past tense known as the passé composée in French is composed of three parts. The subject (je), the auxiliary verb (a conjugated form of with avoid or être) and finally the past participle (mangé).Avoi...

KD
Answered by Katharine D. French tutor
2733 Views

How do I analyse an unseen poem?

The first thing to do when analysing an unseen poem is to read it through twice. The first time you read is to gain your first impressions and understanding of the poem, and the second time is to start no...

EK
4377 Views

How can we really know what the past was like?

Historians can never truly know what the past was like. This is why historians have different interpretations of the past and how it occurred. Having said this, historians can still form a detailed and co...

AR
Answered by Angus R. History tutor
3546 Views

Factorise x^2+5X+6

(x+3)(x+2)To check this, use the 'FOIL' (first, outside, inside, last) method to ensure the answer is correct.x^2+2x+3x+6x^2+5x+6

DB
Answered by Darius B. Maths tutor
1868 Views

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