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vlabodo [156]
3 years ago
14

In atomic mass units, what is the average atomic mass of the atoms that make up boron (B)?

Chemistry
1 answer:
Annette [7]3 years ago
5 0
Atomic mass is the decimal number that is on the periodic table...

Boron's atomic mass is 10.81
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Ppredict the identity of the precipitate in the below reaction:<br><br> BaCl2(aq) + K2SO4(aq) →
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Answer:  The precipitate formed is BaSO_4

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid or precipitated form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

K_2SO_4(aq)+BaCl_2(aq)\rightarrow BaSO_4(s)+2KCl(aq)

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2 years ago
How many moles of nitrous oxide gas (N2O) is contained in 20.0 L balloon at a pressure of 1.09 atm and a temperature of 298K? Ro
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There are 0,89 moles of nitrous oxide gas  in the balloon.

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2 years ago
1. What is the electron configuration of bromine atom?
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