Answer:
Explanation:
A mixture of pentadecane and heptadecane can be separated by amides.
The value of
is -3. 
<h2>Procedure - Differentiability</h2><h3 /><h3>Chain rule and derivatives</h3><h3 />
We derive an expression for
by means of chain rule and differentiation rule for a product of functions:
(1)
If we know that
,
,<em> </em>
,<em> </em>
and
, then we have the following expression:




The value of
is -3. 
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<h3>Remark</h3>
The statement is incomplete and full of mistakes. Complete and corrected form is presented below:
<em>The point (-2, 4) lies on the curve in the xy-plane given by the equation </em>
<em>, where </em>
<em> is a differentiable function of </em>
<em> and </em>
<em> is a differentiable function of </em>
<em>. Selected values of </em>
<em>, </em>
<em>, </em>
<em> and </em>
<em> are given below: </em>
<em>, </em>
<em>, </em>
<em>, </em>
<em>. </em>
<em />
<em>What is the value of </em>
<em> at the point </em>
<em>?</em>
Generally, the mindful intercultural interactions require: B. All three of the answers are true.
<h3>What is an
intercultural interaction?</h3>
An intercultural interaction is also referred to as intercultural communication and it can be defined as a field of psychology that is focused on the study of both verbal and non-verbal communications and behaviors exhibited across different cultures and social groups, as well as how interaction (communication) is being affected by culture.
In the field of Psychology, we can infer and logically conclude that the mindful intercultural interactions generally require all of the following:
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Complete Question:
Which of the following do mindful intercultural interactions require?
A. Intention
B. All three of the answers are true
C. Attitude
D. Attention
The pH where you might be able to precipitate as much Cu2 as possible will be any value that is less than 5.85.
<h3>How to illustrate the information?</h3>
The solubility product of salt is defined as the product of molar concentrations of ions in a saturated solution of it.
An ion will be precipitated if the ionic product exceeds the solubility product of the cation. In the case of Cu and Zn, the solubility product is greater for Zinc than Copper.
Also Cu will be precipitated in an acidic medium while Zn is precipitated in an alkaline medium. We have for CuS, K= S2 so S = 2.4495*10-8. For ZnS, S = 0.1414. So the lower the pH higher will be the amount of CuS precipitated.
If we are starting with 0.075M CuS and ZnS solution it will have 0.075 moles each of Cu2+, Zn2+, and S2. Since the anion concentration can be equated to POH, POH for Cus and Zns are 14.096 and 5.85.
The maximum precipitation will take place is any value which is less than 5.85.
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