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8_murik_8 [283]
3 years ago
9

An element's atomic number is 45. how many electrons would an atom of this element have?

Chemistry
1 answer:
Umnica [9.8K]3 years ago
8 0
The atomic number shows the number of protons and the number of protons is equal to the number of electrons. Therefore there are 45 electrons present.
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Answer:

4.37 g of barium sulphate

Explanation:

The reaction equation is;

3BaCl2(aq) + Fe2(SO4)3(aq) ---->3 BaSO4(s) + 2FeCl3(aq)

From the question, the number of moles of both barium chloride and FeSO4 = 125/1000 L × 0.150 M = 0.01875 moles

To find the limiting reactant;

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0.01875 moles of barium chloride yields 3 × 0.01875 moles/3 = 0.01875 moles of barium sulphate

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