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Dmitry [639]
2 years ago
8

Predict the products and then balance the equation

Chemistry
2 answers:
Aneli [31]2 years ago
4 0

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here's the balanced equation for given Double displacement reaction ~

\sf Pb(NO_3)_2 +2 \:  KI = PbI_2  +2 \:  KNO_3

The products fored are : Lead Iodide ( PbI2 ) and Potassium Nitrate ( KNO3 )

IceJOKER [234]2 years ago
4 0

\\ \rm\Rrightarrow Pb(NO_3)_2+2KI\longrightarrow  2KNO_3+PbI_2

On both sides

  • Pb=1
  • NO_3=2
  • K=2
  • I=2
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andrew-mc [135]

Answer:

c) 9.03 x 10^23

Explanation:

find the molar mass of Al

Al is 27.0 grams

Then use that, to find the number of moles in Aluminum.

Then use Avogadro's number which is 6.02 * 10^23

After that, write all of that down with dimensional analysis.

40.5 g * 1 mol/ 27.0 g of Al  * 6.02 x 10^23 / 1mol

As your final answer, you will get 9.03 * 10^23 atoms with sig figs.

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4 0
4 years ago
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Vera_Pavlovna [14]

The number of moles of gas present are 0.0054

<u>Explanation:</u>

Given-

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We know,

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R = 0.082 L.atm.K⁻¹.mol⁻¹

n = PV/RT

n = (3.81)(0.044)/(0.082)(373)

n = 0.0054 moles

Therefore, number of moles of gas present are 0.0054

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