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Chemistry
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The pH of pure water can vary depending on the temperature it is held at. Does that mean pure water can be acidic or alkaline?

Interestingly, pure water will always be neutral, regardless of pH. To understand why, we have to properly look at what pH means. pH is a measure of the number of free H+ ions in a solution or liquid. The...

Answered by Sebastian N. Chemistry tutor
9599 Views

Draw a dot and cross diagram to show the bond present in Sodium Chloride (NaCl). State what type of bonding this is and the type of structure this compound forms.

[draw diagram on the whiteboard]Atoms are most stable when they have the maximum amount of electrons in their outer shell (usually 8)Na is a metal in Group I of the periodic table so it has 1 electron in ...

Answered by Philip B. Chemistry tutor
6675 Views

What does a reaction between acid and base give?

Acid + Base = Salt + Water

Answered by Sophia P. Chemistry tutor
1790 Views

What are isotopes?

Isotopes are a variant of a particular chemical element in the Periodic Table. They have the same atomic number, therefore the same number of protons and electrons. However they have a different number of...

Answered by Priya A. Chemistry tutor
3464 Views

Anhydrous magnesium chloride, MgCl2, can absorb water to form the hydrated salt MgCl2.4H2O. Suggest one reason why the enthalpy change for this reaction cannot be determined directly by calorimetry.

Not possible to prevent some dissolving/ It is soluble / dissolves / other hydrates may form / difficulty to measure temperature change of a solid.

Answered by Alex H. Chemistry tutor
11072 Views

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