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An atom of an element has the electronic structure 2,8,8,2. What is its atomic number?

20 2+8+8+2= 20
MF
Answered by Molly F. • Chemistry tutor
4653 Views

In the production of anhydrous copper sulphate (a reversible reaction), the forward reaction is an endothermic reaction. Explain the effect of increasing the temperature on the production of anhydrous copper sulphate.

By increasing the temperature, the reactant particles gain more energy. This has a two-fold effect. Firstly, the reactant particles gain more kinetic energy, therefore they start to travel faster, resulting ...
JN
Answered by Jaime N. • Chemistry tutor
3214 Views

Why does increasing temperature increase the rate of reaction?

Increasing temperature increases the rate of reaction for 2 reasons: the first (minor) reason is that particles have more kinetic energy with increasing temperature, so there are more collisions between reac...
SP
Answered by Sneha P. • Chemistry tutor
17063 Views

How do I calculate bond enthalpy from a chemical reaction?

Example Q: See the reaction: CH 4 + Br 2 --> CH 3 Br + HBr, with bond energies as follows (in kJ/mol) :C-H = 412, Br-Br = 193,C-Br = x,H-Br = 366Overall energy = –51. Calculate x (bond energy of C-Br bond...
DE
Answered by Darcy E. • Chemistry tutor
5293 Views

An isotope of Nitrogen has an atomic number of 7 and a mass number of 15. How many protons, neutrons and electrons will each atom have?does

Protons = 7Neutrons = 8Electrons = 7This N-15 isotope has an atomic number of 7 - this is equivalent to the number of protons.The atom is not charged and so will have the same number of electrons as protonsT...
EB
Answered by Eva B. • Chemistry tutor
17417 Views