The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
<h3>What is heat?</h3>
Heat is the transportation of energy to or from a thermodynamic system.
By the formula of heat

Where n = moles
Delta Hrxn is molar heat
q = heat
Putting the values in the equation

Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
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Answer:there is a vgraph so where it says 4 at the bottom then go under to -2 then ur done.
Explanation:
Neurofeedback involves trying to change brain wave activity.
<h3>Brain wave</h3>
The human brain is an intricate organ that baffles many scientists today. One design feature of the human brain is its ability to send signals in the form of brain waves when the mind is ar work or in a state of rest. These brain wave activity are braodly categorized into four types, namely;
- beta waves
- alpha waves
- theta waves
- delta waves
Neurofeedback thus occurs when an attempt is made to change from one of the above brain wave types to another.
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Answer:
The sum of the complex numbers is
.
Explanation:
Let be
and
, the sum of the complex number can be found by algebraic means. That is:
1)
,
Given.
2)
Definition of addition.
3)
Commutative and associative properties.
4)
Definition of addition/Distributive property.
5)
Definition of addition/Commutative property/Result.
The sum of the complex numbers is
.