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ASHA 777 [7]
3 years ago
12

Complete and balance the precipitation reactions. Include physical states. Refer to the solubility rules as necessary. precipita

tion reaction: Ba(NO3)2(aq)+CuSO4(aq)⟶BaSO4+CU(NO3)2 Ba ( NO 3 ) 2 ( aq ) + CuSO 4 ( aq ) ⟶ BaSO 4 + CU ( NO 3 ) 2 precipitation reaction: K3PO4(aq)+MgCl2(aq)⟶6KCl(aq)+Mg3(PO4)2(s) K 3 PO 4 ( aq ) + MgCl 2 ( aq ) ⟶ 6 KCl ( aq ) + Mg 3 ( PO 4 ) 2 ( s )
Chemistry
1 answer:
Darya [45]3 years ago
4 0
<h3>Answer:</h3>

Ba(NO₃)₂(aq) + CuSO₄(aq) ⟶ BaSO₄(s) + CU(NO₃)₂(aq)

2K₃PO₄(aq) + 3MgCl₂(aq) ⟶ 6KCl(aq) + Mg₃(PO₄)₂(s)

<h3>Explanation:</h3>
  • Precipitation reactions are types of reactions that involve a reaction between soluble salts to form an insoluble salt or a precipitate and a soluble salt.
  • The equations given in the question are examples of precipitation reactions that lead to the formation of precipitates BaSO₄ and Mg₃(PO₄)₂
  • The balanced equations are;

Ba(NO₃)₂(aq) + CuSO₄(aq) ⟶ BaSO₄(s) + CU(NO₃)₂(aq)

2K₃PO₄(aq) + 3MgCl₂(aq) ⟶ 6KCl(aq) + Mg₃(PO₄)₂(s)

  • Based on solubility rules, all sulfates are soluble except CaSO₄, BaSO₄, PbSO₄ and silver sulfate. Therefore, BaSO₄ is a precipitate and will have a solid-state.
  • All phosphates are insoluble except those of ammonium, potassium, and sodium. Therefore, Mg₃(PO₄)₂ is a precipitate and will have a soluble state.

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3 years ago
How many moles of carbon atoms is 7.72 x 10 ^24 atoms of carbon? Round to 2 decimal places
soldier1979 [14.2K]

Answer:

<h2>12.82 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

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L is the Avogadro's constant which is

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From the question we have

n =  \frac{7.72  \times {10}^{24} }{6.02 \times  {10}^{23} }  \\  = 12.8 239

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Hope this helps you

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