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Chemistry
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Why is an alloy harder than a pure metal?

The atoms in an alloy are of different sizes so the layers are distorted and therefore, due to a lack of proper layers harder from them to slide over each other.

AC
Answered by Anjalee C. Chemistry tutor
8260 Views

Explain why graphite conducts electricity

Carbon is the atom that makes up graphite. Carbon is in group 4 of the periodic table, this means that Carbon has 4 electrons in its outer shell. In graphite each Carbon atom forms three covalent bonds, t...

FD
Answered by Fiona D. Chemistry tutor
6845 Views

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 successfu...

SM
9890 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 difficu...

ES
Answered by Ekaahh S. Chemistry tutor
13154 Views

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 th...

ST
Answered by Sara T. Chemistry tutor
5844 Views

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