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mote1985 [20]
3 years ago
7

Please make the following calculation and round your

Chemistry
1 answer:
lapo4ka [179]3 years ago
3 0

Answer:

343

Explanation:

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3 Cu + 8HNO3 g 3 Cu(NO3)2 + 2 NO + 4 H2O
Ksivusya [100]

Considering the reaction stoichiometry, the amount of moles of NO that is produced when 27 moles of HNO₃ react is 6.75 moles.

<h3 /><h3>Reaction stoichiometry</h3>

The balanced reaction is:

3 Cu + 8 HNO₃ → 3 Cu(NO₃)₂ + 2 NO + 4 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:  

  • Cu: 3 moles
  • HNO₃: 8 moles
  • Cu(NO₃)₂: 3 moles
  • NO: 2 moles
  • H₂O: 4 moles

<h3>Amount of moles of NO produced</h3>

It is possible to determine the the amount of moles of NO produced by a rule of three: if by stoichiometry 8 moles of HNO₃ produce 2 moles of NO, if 27 moles of HNO₃ react how many moles of NO will be formed?

amount of moles of NO=\frac{27 moles of HNO_{3} x 2 moles of NO}{8 moles of HNO_{3}}

<u><em>amount of moles of NO= 6.75 moles</em></u>

In summary, the amount of moles of NO that is produced when 27 moles of HNO₃ react is 6.75 moles.

Learn more about reaction stoichiometry:

<u>brainly.com/question/11999193</u>

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<u>brainly.com/question/9926203?referrer=searchResults</u>

<u>brainly.com/question/6061451?referrer=searchResults</u>

4 0
3 years ago
If 155 J of heat energy is applied to a block of silver weighing 27.9 g, by how many degrees will the temperature of the silver
Brilliant_brown [7]

Answer:

The temperature of silver increase by 23.15 °C.

Explanation:

Given data:

Heat added = 155 j

Mass of silver = 27.9 g

How many degree temperature increase = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Specific heat capacity of silver is = 0.240 j/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values in formula.

155 j = 27.9 g × 0.240 j/g.°C  × ΔT

155 j = 6.696  j/°C  × ΔT

ΔT  = 155 j /6.696  j/°C

ΔT  = 23.15 °C

3 0
3 years ago
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