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Chemistry
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Explain why the atomic radii of the elements decrease across Period 3 from sodium to chlorine

As you go across the period from sodium to chlorine, the number of protons in the nucleus increase.As protons are positively charged, they attract the outer electrons; as the number of protons increase, t...

EC
Answered by Eve C. Chemistry tutor
4276 Views

A compound is found to contain 37.21% carbon, 7.75% hydrogen and 55.04% chlorine. What is it's empirical formula?

Carbon: 37.21/12= 3.1Hydrogen:7.75/1=7.75Chlorine: 55.04/35.5=1.55Ratio:c:H:Cl3.1:7.75:1.552:5:1Therefore empirical formula= C2 H5Cl

LP
Answered by Lucy P. Chemistry tutor
7112 Views

How do you determine the shape and bond angle of an ammonia molecule?

Firstly, how many electrons does nitrogen have in its outer shell?... Nitrogen is in group 5, so 5.How many more electrons does nitrogen need to give it a full outer shell?... 8 electrons provide a full o...

Answered by Chemistry tutor
4393 Views

What is the Haber process? What are the optimal conditions for the reaction and why are they not used in practice?

The Haber process is a reaction of burning Nitrogen and Hydrogen to make NH3.The formula is 2N2 + 3H2 - 2 NH3. The reaction is reversible.The forward reaction is exothermic so when the temperature is incr...

IM
Answered by Iona M. Chemistry tutor
3665 Views

Describe three possible structures of the allotropes of carbon

1.Graphite is made up of multiple flat layers of carbon, where the layers are not covalently bonded together. Three covalent bonds hold the atoms in each layer together, forming a repeating hexagonal ring...

JC
Answered by James C. Chemistry tutor
2627 Views

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