1.Historians divide Colonial America into three distinct regions. Compare and contrast these three different areas and discuss why each region developed in a unique way.
2. Compare and contrast the society that developed in Colonial America with European society at this same time. What historical factors might explain the differences between the two societies?
3. indentured servant
In: Chemistry
1. In each of A-C, below, indicate whether:
a) the statement is possible under the laws of thermodynamics; b) the statement violates the First Law; c) the statement violates the Second Law. In the case of a Second Law violation, circle the name of the scientist whose version of the second law is most simply and obviously broken. In each case there is a best name, but feel free to explain your choice. (Adapted from Bill Reinhardt.)
A. A novel and reversible heat engine absorbs 10 kJ of energy from a high temperature bath, performs 8 kJ of work on the surroundings, and exhausts 5 kJ of heat into a low temperature heat bath.
a. possible
b. violates First Law
c. violates Second Law: Kelvin Clausius Boltzmann
B. One night you wake up to discover that all the air in your room has gone under your bed. Note that this happens with no change in energy or temperature.
a. possible
b. violates First Law
c. violates Second Law: Kelvin Clausius Boltzmann
C. A novel & reversible heat engine absorbs 10 kJ of energy from a low temperature reservoir, performs 8 kJ of work on the surroundings, and exhausts 2 kJ of energy into a high temperature bath.
a. possible
b. violates First Law
c. violates Second Law: Kelvin Clausius Boltzmann
In: Chemistry
what is the solute solvent interactions of NaBr in water
HCl in acentonitrile &
CF4 in hexane
In: Chemistry
A solution made by dissolving aspirin, C9H8O4, in chloroform, CH3Cl had a boiling point of 61.84°C. What is the freezing point depression of this solution? Given the following information for the solvent: the boiling point and freezing points are 61.20°C and -63.50°C, respectively. Kb = 3.630 °C/m and Kf = 4.680°C/m .
In: Chemistry
What are the consequences of deficiencies of the acyl-CoA dehydrogenase enzyme? Discuss the normal role of the enzyme, and how reduced activity impacts fatty acid metabolism. What metabolites used for fuel do you expect to be higher in the blood? What metabolites used for fuel do you expect to be much lower in the blood? How do the excess or lack of these metabolites influence the function of the organs that deal with these metabolites?
In: Chemistry
Suppose that 24 g of each of the following substances is initially at 29.0 ∘C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
silver
gold
aluminum
water
In: Chemistry
Why are positive ions analyzed in Mass Spectroscopy? Is it theoretically possible to analyze negative ions? Give an example, when it is desirable to monitor negative ions.
In: Chemistry
What is the difference between electron multiplier and photoelectron multiplier? How does the pressure in Mass Spectrometry affect the response of photoelectron multiplier? How could photoelectron multiplier be used in Mass Spectrometry?
In: Chemistry
One way to remove magnesium (Mg2+) from water is to precipitate it with a strong base such as sodium hydroxide (NaOH). Assuming the following unbalanced reaction describes the process. (a) Calculate the concentration of NaOH (in mg/L) needed to completely remove 20 mg/L of Mg2+.
(b) Calculate the mass (in lb) of solid Mg(OH)2 that will be produced (and must be disposed of) if this reaction is performed in 250,000 gallons of water.
MgSO4 + NaOH = Mg(OH)2¯ + Na2SO4
In: Chemistry
Calculate the pH of a 0.105 mol/L solution of carbonic acid. Answer is 3.668. How do I show my work for this question
In: Chemistry
Predict the ΔHrxn for the following reaction: Rb(g) + Na+(g) → Rb+(g) + Na(g)
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| ΔHrxn > 0 because the IE1 for Na+ is less than the IE1 for Rb+ |
In: Chemistry
If you were given a 1000 mg/L stock solution of your metal and a 100 mM solution of Na2EDTA, how much of each solution would you need to make a 25 mL 1mM mixed solution of these two chemicals, where both the metal and EDTA have the same concentration? Describe how you will prepare this solution in addition to your calculation.
In: Chemistry
Determine the percent ionization of a 0.014 M solution of hypochlorous acid, HClO. The Ka for the acid is 3.5x10^–8.
A) 3.5x10 ^–6 %
B) 4.9x10^–9 %
C) 7.0 x 10^–3 %
D) 5.0 x10^–2 %
E) 1.58x 10^–1 %
In: Chemistry
Explain why the preparation of nylon-6,10 occurs under milder conditions when decanedioyl dicholride is used instead of decanedioic acid
In: Chemistry