A mole of air is sampled from the atmosphere when the atmospheric pressure is 765 mm Hg, the

temperature is 25 C, and relative humidity is 75%. The sample of air is placed inside a closed container

and heated to 135 C and then compressed to 2 atm. What are the relative humidity, the humidity, and the mole fraction of water in the compressed air?

1)What is energy? Is it conserved, and how is this conservation different than momentum?

2) What is the difference between a closed system and an isolated system?

3) What is the difference between elastic, inelastic, totally inelastic, and super-elastic collision?

4) What is Mazur's notation for relative velocity and what is relative velocity anyway?

1. What is a CpG island, and how is it relevant to this topic?
2. List three distinct places/steps in gene expression that gene regulation can occur in eukaryotes (possibilities).

3 Define “chromatin remodeling’, “open chromatin” and “closed chromatin"

4.What is the SWI/SNF complex and what does it do?

Ill Rate High

true or false

1. IMPLICIT COSTS DO NOT REQUIRE CASH OUTLAYS BUT ARE OVERHEAD EXPENSES.

2. THE LONG RUN PHILLIPS CURVE IS A VERTICAL LINE CURVE AND IS INDEPENDENT OF INFLATION.

3. INTERNATIONAL TRADE= OPEN SYSTEM = GLOBALIZATION = GLOBAL MANAGEMENT

4. PROTECTIONISM = CLOSED SYSTEM = AUTARKY

5. BUDGET SURPLUS= TAX REVENUES > G AND CONTRIBUTES TO ECONOMIC GROWTH.

Which of the following is not an example of a chemical hazard?

toxic by-products, such as vapors and fumes, caused by mixing incompatible materials

skin irritation, disfiguring burns, eye injury or blindness caused by corrosive products

pressure build up in a closed system has the potential for explosion/implosion

1. Why should a lungfish be able to meet nearly all its carbon dioxide exchange through the skin while it must use its lungs to handle oxygen exchange?

2. Give an example of (a) a peristaltic heart, (b) a chamber heart, (c) an open circulatory system, and (d) a closed circulatory system.

Select all the statements that are true during the filling phase of the cardiac cycle.

Isovolumetric contraction

Ventricular Systole

Atria pressure is greater than ventricular pressure

Ventricular pressure is greater than aortic pressure

Ventricles are contracting

The AV valves are open

All valves are closed

Ventricular Diastole

Aortic Valve is open

The S&P 500 stock price closed at $98, $103, $107, $102, $111 over five successive weeks. What is the weekly standard deviation of the stock price? What is the weekly standard deviation of the returns assuming no dividend were paid?

the right answer are $4.97, 5.71%

please show me the steps.

If hydrogen sulfide concentrations are greater than 0.15 mg S/L, it is harmful to fish health, calculate the minimum safe pH, if the total sulfide concentration is determined to be 20 micrometers. Assume this is a closed system and there is no H₂S transfer with the atmosphere. pKa₁= 7, pKa₂= 12 for H₂S. Molar mass for sulfur is 32g/mol