Calcium is a chemical element that has an atomic number of 20. The atomic number of element just means how many protons are in the core of the particular element.
A picture of the element of calcium is attached with its atomic number.
Which of the following has almost no mass?
1 answer:
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here we have to choose the limiting reactant in the given unbalanced reaction.
The 5.6 moles of aluminum will be the limiting reactant in this reaction.
The reagent or reactant which is totally consume in a reaction is called the limiting reagent or reactant.
The unbalanced reaction is Al + H₂O → Al₂O₃ + H₂
On balancing 2Al + 3H₂O = Al₂O₃ + 3H₂
As we can see that 2 moles of aluminium (Al) reacts with 3 moles of water (H₂O). Thus 5.6 moles of Al reacts with×5.6 = 3.733 moles of water.
Henceforth the 5.6 moles aluminum will be the limiting reactant as it is totally consume, but only 3.733 moles of water is reacting and the rest 6.2 - 3.733 = 2.467 moles of water will remain excess in this reaction.
Thus the aluminum will be the limiting reactant.
Answer: will have a greater partial charge.
Explanation:
A polar covalent bond is defined as the bond which is formed when there is a low difference of electronegativities between the atoms, thus resulting in charge difference. Example:
Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms and thus there is no charge difference. Example:
Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal. The electronegative difference between the elements is high. The charges on cation and anion neutralise each other. Example:
Thus as will have greater partial charge.