4 years ago

if atoms of lithium and sodium easily give up a single electron which other elements also have this property

1 answer:

6 0

Basically all of the elements found in Group I of the periodic table also have this property. The ability to easily give up a single valence electron.

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Read 2 more answers

How many moles of glucose are in 19.1g of glucose?

Crank

Answer:

0.106 mol (3s.f.)

Explanation:

To find the number of moles, divide the mass of glucose (in grams) by its Mr. Glucose has a chemical formula of C6H12O6. To find the Mr, add all the Ar of all the atoms in C6H12O6.

Ar of C= 12, Ar of H= 1, Mr of O= 16

These Ar values can be found on the periodic table.

Mr of glucose= 6(12)+ 12(1) + 6(16)= 180

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= mass ÷ mr

= 19.1 ÷ 180

= 0.106 mol (3 s.f.)

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