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Explain, in terms of particles, why the rate decreases during the reaction between magnesium and hydrochloric acid.

There are 2 ideas that need to be included here :The concentration of acid decreases over time So collisions are less frequentAs the reaction proceeds more and more molecules would have collided successfully...
SM
11887 Views

Explain why pure metals can be bent and shaped, whereas alloys cannot?

In pure metals the atoms are all the same size , hence the layers of atoms can slider over each other. However, in an alloy the different size atoms distory the layers in the structure hence it is difficult ...
ES
Answered by Ekaahh S. • Chemistry tutor
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The composition by mass of a compound is: C=36.4%, H=6% and F=57.6%. Calculate the empirical formula. If the RFM is 66, what is the molecular formula?

Calculate the moles of each of the 3 elements (to get C=3.03, H=6, F=3.03). Divide these by the smallest mol calculated to get the ratio of the elements. This will get C:H:F as 1:1.978:1 = 1:2:1 and so the e...
ST
Answered by Sara T. • Chemistry tutor
6625 Views

Why do melting points decrease down group I?

As we go down group I, the ions have larger shells and the distance between the bonding electrons and positive nucleus decreases. This decreases the overall attraction forces between the two in metal lattices.
CW
Answered by Chloe W. • Chemistry tutor
4387 Views

Explain how a coordinate bond forms

A coordinate bond is a bond formed through the donation of a lone pair of electrons from an atom bonding to another atom which has an empty orbital.The lone pair from one atom is donated to the empty orbital...
TM
Answered by T M. • Chemistry tutor
6593 Views