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Chemistry
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Describe what the Activation Energy for a reaction is.

The activation energy is the minimum amount of energy that particles need to collide with for the reaction to occur.

AR
Answered by Adi R. Chemistry tutor
1925 Views

Can you describe ionic bonding and structure of ionic compounds to me?

Ionic bonding involves ionic bonds forming between a metal and a non- metal (show where metals and non- metals lie on the periodic table) and electrons are transferred. The structure of this ionic compoun...

DJ
Answered by Deevani J. Chemistry tutor
3985 Views

Define the term empirical formula. Determine the molecular formula of a compound with the empirical formula C2H4O and a relative molecular mass of 176.0

Empirical formula is the simplest whole number ratio of atoms of each element in a compound. With the empirical formula and relative molecular mass, we can determine the actual molecular formula of a comp...

Answered by Chemistry tutor
6349 Views

Describe and explain how changes in the earth atmosphere, from the Precambrian Era (where the earth as occupied by volcanoes), have changed to form the surface of the Earth today and its atmosphere.

The Earth's atmospheric oxygen increased because plants and algae developed and used carbon dioxide for photosynthesis. This led to a decrease in atmospheric carbon dioxide levels. The origins of the ocea...

SD
Answered by Simran D. Chemistry tutor
4538 Views

Explain, in terms of its structure and bonding, why magnesium oxide has a very high melting point (4).

Magnesium oxide has a giant 3D lattice structure formed by strong electrostatic forces of attraction between the positively charged magnesium ions and the negatively charged oxygen ions. These ionic bonds...

LH
Answered by Luke H. Chemistry tutor
23781 Views

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