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how many grams of Cu would have to react to produce 89.5 grams of Ag?
question 1
I have a solution of 0.0670 mol of Cu(NO3)2 in 154 mL of water. I then dissolve 0.45 mol of potassium cyanide, KCN, in this solution, and it instantly turns from a pale blue colour to a pronounced dark blue, indicating the formation of the tetracyanocuprate (ll) ion, [Cu (CN)4]2- . The volume of the final solution is 155 mL. Please calculate the concentration of free (uncoordinated) Cu2+ in this solution. Show all your work, including the minor conversions and the ICE table. Write a balanced equation to begin.
Question 2 A Masters student from UNISA wants to undergo a study that wants to explore and account for the popularity of Black Panther among subaltern Black South African women in the predominantly Black township of Soweto. The study is an audience reception analysis and is interpretive in nature. Its assumption is that reality is socially constructed and it can only be known through methods that allow the researcher to view the world from the participants’ perspective (Nieuwenhuis, 2012:55). The study departs from the premise that the social world is not independent of the meanings that members of society use to account and constitute their reality. In this light, what methodology was used for exploring audience readings or interpretations of Black Panther from the context of their everyday lives. Elaborate more on the methodology by giving its advantages and disadvantages. [10 marks]
Using C# and Visual Studio, design and implement a standalone command-line application that fulfils the following requirements: 1.The user shall be able to enter the following values: a. Gross monthly income (before deductions). b. Estimated monthly tax deducted. c. Estimated monthly expenditures in each of the following categories:
Question 1
a) What is the concentration of Ca2+ in a saturated solution of CaF2 in pure water, given that Ksp = 4.0 x10^-11?
Write the chemical equation for this reaction.
b) What is the concentration of Ca2+ in a saturated solution of CaF2 in 0.361 M NaF?
Write the chemical equation. SHow your use of the ICE table.
c) Without doing any calculations, would you expect the solution to be in part b) to be more acidic, basic, or neutral? Explain why it would be acidic, basic, or neutral by writing the chemical equation.
Discuss the following concepts under ‘A world View for teaching Social Sciences in an African context’
1.2.1 Understanding ideology (10)
1.2.2 Considering the ubuntu worldview (10)
Show the relationship between academic History and school History considering
the recent developments in South Africa by drawing attention to the vision
and purpose of History as a school subject.
Include references in your answer.
Consider the chemical reaction 2NH3(g) ⇌ N2(g) + 3H2(g). The equilibrium is to be established in a 1.0 L container at 1,000 K, where Kc = 4.0 × 10–2. Initially, 1,220 moles of NH3(g) are present. Estimate the equilibrium concentration of N2(g).
Identify whether each sentence below is simple, compound or complex.
2. Maizon is going to Blue Hill, but Margaret will stay behind.
3. Sometimes things change, and they can’t change back again.
4. Maizon thinks of Margaret as her best friend in the whole world.
5. While Margraet hoped for better times, Maizon couldn’t care less.
6. Their friendship may end if they don’t stay in touch.
7. Although Ms. Tory held Margaret’s hand, she did not speak.
8. The summer had brought sadness, and Margaret had suffered.
9. This last summer with Maizon is a time of great change for the girls’ friendship.
10. While Margaret will try new things, Maizon will stay home and read.
Identify whether each sentence below is simple, compound or complex.
3. Sometimes things change, and they can’t change back again.
4. Maizon thinks of Margaret as her best friend in the whole world.
5. While Margraet hoped for better times, Maizon couldn’t care less.
6. Their friendship may end if they don’t stay in touch.
7. Although Ms. Tory held Margaret’s hand, she did not speak.
8. The summer had brought sadness, and Margaret had suffered.
9. This last summer with Maizon is a time of great change for the girls’ friendship.
10. While Margaret will try new things, Maizon will stay home and read.
#339914 on Dec 2023