Which of the following are redox reactions ? Explain your answer on the basis of changes in oxidation number.

1. CuSO₄ + 2NaOH → Cu(OH) ₂ + Na ₂SO₄

2. 2Al + 3MgSO₄ → 3Mg + Al ₂(SO₄)₃

3. 2(NH₄)₃PO₄ + 3Ba(NO₃)₂ → Ba ₃(PO₄)₂ + 6NH₄NO₃

4. 2HNO₃ + 3H₃AsO₃ → 2NO + 3H ₃AsO₄ + H₂O

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For the following reaction, 4.57 g of silver nitrate are mixed with excess copper. The reaction yields 2.29 gram of copper(II) nitrate What is the percent yield for this reaction?

Formula: % yield = (Actual yield/theoretical yield) x 100

2 AgNO₃(aq) + Cu(s) à Cu(NO₃)₂ (aq) + 2 Ag(s)

How might RBC production be altered to compensate for changes to hemoglobin that result in an abnormally high affinity for O2?

• Explain the reasons for changes in beta and explain if one should be more concerned with a negative versus positive factor. Be sure to reference volatility.
• Please provide an example of negative Beta.

Design changes are identified to be one of the major causes of project delays and cost overruns. As a construction project manager, what would you do to avoid or minimize the impact of this problem?

Explain the logic of the monetary neutrality and why changes in the quantity of money only affect nominal variables and not real variables. Do you agree that monetary neutrality approximates the behavior of the economy in the long run? Why or why not?

must be at least 250 words

Explain the logic of the monetary neutrality and why changes in the quantity of money only affect nominal variables and not real variables. Do you agree that monetary neutrality approximates the behavior of the economy in the long run? Why or why not?

MUST BE AT LEAST 250 WORD RESPONSE / DO NOT RESPOND AND OR ANSWER IF NOT AT LEAST 250 WORDS!!!!!

How do costs vary in response to changes in the quantity of a variable input? In your own words. 250 words

Explain the potential ambiguity in the effect of exchange rate changes on the balance of trade. How does the Marshall-Lerner condition clarify the nature of this ambiguity? [ 25 marks]

Explain the changes observed in the risk of investments when an investor increases the number of stocks in his or her portfolio.

What are the changes in the economic and social life after the covid 19 outbreak?