HCN Is a weak acid that dissociates in water. Which statement is completely true?

a) HCN is the Bronsted-Lowry base in this problem

b) HCN is a conjugate acid in this problem

c) with a Ka value, HCN is a strong acid

d) CN^-1 ion is its conjugte base

e)HCN solutions have a pH value near 11

In the July 2017 FOMC meeting, governors and voting presidents of the Federal Reserve System agreed not to increase the federal funds rate target, but somewhat let the markets know that there could be a rise in the near future. How do you think that financial managers will react to this news? Which instruments can they use to hedge against a change in interest rates?

Working in teams of five, think of a product or service your friends want but cannot get on or near campus. You might ask your friends at other schools what’s available there. What kind of product would fill that need? Discuss your results in class and how you might go about marketing that new product or service.

1. Background information regarding what skin pigmentation is and/or why humans have skin pigmentation
2. Why dark pigmentation is an adaptation to the selective pressure(s) found near the equator
3. Why light pigmentation is an adaptation to the selective pressure(s) found at higher latitudes

Please give a thorough and detailed answer to these three questions, thank you.

The interest rate policy followed by the Central Bank of major world economies (USA, UK, Japan, Europe) are near zero or negative. Discuss the implication this low-interest rate policy for any one type of financial institution (banks, savings, and loans, insurance companies, pension funds, mutual funds, etc.) and examine its possible impact.

Examples of a research topic framed as a central question:

• What is environmental justice and why is it important?
• Do states with sustainable energy tax credits result in more consumers purchasing an electric vehicle or solar panels than those without?
• What are the economic, environmental, and health costs caused by toxic waste sites located near residential areas?

The coronavirus intervened Australia in early 2020.

On 12 May, the Morrison government issued an unprecedented progress report on the delayed budget, outlining the coronavirus pounding to the national economy and the huge outlay to deal with the pandemic.

What were the main issues presented? How do you think they would affect the economy, social and employment situation in the near future?

Fourier's theorem, which essentially states that a real-time function, such as the pressure changes occurring near the surface of the eardrum, can be converted into a spectral representation of the sound. In other words, a sound can be described in either the temporal domain or the frequency domain. Briefly discuss the importance of Fourier's theorem in relation to the physical aspects of sound and to the hearing sciences in general.

Use the following graphs to answer the next question.

In the graphs, the numbers in parentheses near the AD₁, AD₂, and AD₃ labels indicate the level of investment spending associated with each curve, respectively. All numbers are in billions of dollars. The interest rate and the level of investment spending in the economy are at point C on the investment demand curve. To achieve the long-run goal of a noninflationary, full-employment output of Q_f in the economy, the Fed should try to _____.

a. increase aggregate demand by increasing the interest rate

b. increase aggregate demand by decreasing the interest rate

c. make no change in the interest rate

Use the following graphs to answer the next question.​

In the graphs, the numbers in parentheses near the AD₁, AD₂, and AD₃ labels indicate the levels of investment spending associated with each curve. All figures are in billions. What is the desired level of investment spending in this economy if the goal is to achieve a noninflationary, full-employment level of real GDP?​

a. $50 billion

b. $100 billion

c. $225 billion

In forming a chelate with a metal ion, a mixture of free EDTA (abbreviated Y4−) and metal chelate (abbreviated MYn−4) can buffer the free metal ion concentration at values near the dissociation constant of the metal chelate, just as a weak acid and a salt can buffer the hydrogen ion concentration at values near the acid dissociation constant.

The equilibrium

Mn++Y4−−⇀↽−MYn−4

is governed by the equation

K′f=αY4−*Kf=[MYn−4]/[Mn+][EDTA]

here Kf is the association constant of the metal and Y4−, αY4− is the fraction of EDTA in the form Y4−, and [EDTA] is the total concentration of free (unbound) EDTA. K′f is the conditional formation constant.

How many grams of Na2EDTA⋅2H2O (FM 372.23 g/mol) should be added to 1.55 g of Sr(NO3)2⋅4H2O (FM 283.69 g/mol) in a 500. mL volumetric flask to give a buffer with pSr2+=8.00 at pH 10.00? logKf for Sr−EDTA is 8.72 and αY4− at pH 10.00 is 0.30.