Answer:
Explanation:
When NaOH is added to a solution of Mg(NO3)2 , a precipitate forms which will be Mg(OH)2 . When temperature of the solution is raised , Mg(OH)2 gets dissolved.
According to Le Chatelier principle , reaction tends to proceed towards the balance point when , the effect of external change in temperature or pressure etc is reduced.
Addition of heat , promotes dissolution. It is possible only when the process of dissolution is endothermic. Additional dissolution on heating helps in reducing the temperature because , process of dissolution is endothermic.
Dissolution of Mg(OH)₂ is endothermic.
Answer:
General Formulas and Concepts:
<u>Algebra I</u>
Terms/Coefficients
Functions
<u>Calculus</u>
Limits
Limit Rule [Variable Direct Substitution]:
Differentiation
- Derivatives
- Derivative Notation
- Definition of a Derivative:
Explanation:
<u>Step 1: Define</u>
<em>Identify</em>
<u>Step 2: Differentiate</u>
- Substitute in function [Definition of a Derivative]:
- Expand:
- Combine like terms:
- Factor:
- Simplify:
- Evaluate limit [Limit Rule - Variable Direct Substitution]:
- Simplify:
Topic: AP Calculus AB/BC (Calculus I/I + II)
Unit: Differentiation
Answer:
48.00 microamps
Explanation:
The base voltage is limited by the zener to 5.5 V. If we assume the B-E voltage drop is 0.7 V, then the voltage across RE is 5.5-0.7 = 4.8 volts. That means the emitter current is 4.8/2.0k = 2.4 mA.
The base current is that amount divided by (1+β), so is 2.4 mA/(1+49) = 48 μA.
Answer:
You can adjust the stroke width as small as you like. Then expand the stroke. Apply Layer > Expand Stroke. It makes the curve a filled area which looks the same as the curve.
Explanation:
Answer:
a) , b) , c) , d) , e)
Explanation:
a) The coefficient of performance of the reversible refrigeration cycle is:
The temperature of the hot reservoir is:
b) The coefficient of performance is:
c) The temperature of the hot reservoir can be determined with the help of the following relation:
d) The coefficient of performance is:
e) The temperature of the cold reservoir is: