Name two elements that you would expect to have properties very much like those of calcium

1 answer:

3 0

Atoms in the same group (column) of the periodic table have similar properties. This is because all elements in the same group have the same amount of valence (outer) electrons.

So, any element directly above or below Calcium on the periodic table would have similar properties.

These would be Magnesium, Barium, Strontium, Radium, and Beryllium.

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How many moles of KOH are required to produce 4.79 g K3PO4 according to the following reaction? 3KOH + H3PO4 -----> K3PO4 + 3

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0.677 moles

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Take the atomic mass of K = 39.1, O =16.0, P = 31.0

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= 0.02256 mol

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If you don't find exactly 0.677 moles as one of the options, go for the closest one. A very slight error may occur because of taking different significant figures of atomic masses when calculating.

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