dhara005

Two of the emerging technologies in reducing automobile emissions are electric cars and hydrogen fuel cars. Both work by converting chemical energy to electrical energy then to mechanical energy. However, electric cars require charging stations, while hydrogen fuel cars require refilling stations. Which technology is better? Why?

What is the global effect of the stock market on society?

How has the stock market affects the economy of countries around the world?

What type of experimental evidence indicates that light is a wave?

Give an example of a wave characteristics of light that is easily observed outside the laboratory.

Discuss the religious symbolism in The Old mamln and the sea.

Activity 3. Solve the following:

1. What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate ?

2. Calculate the mass of hydrogen formed when 25 grams of aluminum reacts with excess hydrochloric acid.
2Al + 6HCl → Al2Cl6 + 3H2

3. What mass of ZnCl2 can be prepared from the reaction of 3.27 grams of zinc with 3.30 grams of HCl?
Zn +2HCl → ZnCl2 + H2

4. How many milliliters of 0.200 M NH2OH are needed to react with 12.0 mL of 0.550 M FeCl3?
FeCl3 + 3NH4OH Fe(OH)3 + 3NH4Cl

The concentrated sulfuric acid we use in the laboratory is 98.0% H2SO4, by mass. Calculate the molarity and normality of the acidic solution.

The density of the solution is 1.83 g/mL.

14. How many months would it take a spacecraft to make it to Pluto? Use your answer to number 10 and the data table to calculate the answer. Please show your work below. Write a paragraph (3-5 sentences) about your experience with this model. Include critiques of this model. What are its strengths and weaknesses? How could it be improved?

- investigating plate tectonics

• What are some of the major muscles that are engaged in bringing her arms up into the common position she uses when cutting hair?
• There is not much space between the underside of the acromion process and the head of the humerus. What are several tissues located in the space that might get pinched when she holds her arms elevated?

• What are some of the major muscles that are engaged in bringing her arms up into the common position she uses when cutting hair?
• There is not much space between the underside of the acromion process and the head of the humerus. What are several tissues located in the space that might get pinched when she holds her arms elevated?

What are three global effects of world hunger on society and how can we work to reduce or eliminate these catastrophes?

How has World hunger existed in all corners of the globe?

Consider the titration of 80.00 mL of 0.100 M Ba(OH)2 with 0.400 M HCl.

Calculate the pH at the following volumes of the titrant:

  VT  =    0.00  (Initial Stage)

  VT  =  20.00

  VT  =  30.00

  VT  =  40.00 (Equivalence Point Stage)

  VT  =  50.00

  VT  =  80.00

Write 5 statements of fact and opinion. Each statement of fact and opinion should be related in idea.

1. Statement of fact:
Statement of opinion:

2. Statement of fact:
Statement of opinion:

3. Statement of fact:
Statement of opinion:

4. Statement of fact:
Statement of opinion:

5. Statement of fact:
Statement of opinion:

If neon gas travels with an average velocity of 400 m/s at a particular temperature, determine the velocity of butane at the same temperature.

1. How fertilization and embryo development maintain the function of corpus luteum?

The volume of air increases by 5% in its adiabatic expansion. The percentage decrease in its pressure will be

An object is placed 24 cm in front of a concave mirror with a focal length of 6.0 cm. If the

image formed is 4.0 cm long, where is the image formed and how tall is the object?

Do the reactions involved in ozone depletion involve changes in oxidation state of the O atoms?

image formed is 4.0 cm long, where is the image formed and how tall is the object?

1. Benzene to aniline. What catalyst is used?
2. Benzene to 3-nitrobenzenesulfonic acid. What catalyst is used?

3. The device used to carry digital data on analog lines is called as
 a. Modem
 b. Multiplexer
 c. Modulator
 d. Demodulator
 e. None

5. Information travels between components on the mother board through
 a. Flash memory
 b. CMOS
 c. Bays
 d. Buses
 e. Peripherals

6. The 16 bit Microprocessor means that it has
 a. 16 address lines
 b. 16 Buses
 c. 16 Data lines
 d. 16 routes
 e. None

8. The lowest form of Computer language is called
 a. BASIC
 b. FORTRAN
 c. Machine Language
 d. COBOL
 e. None

Which of the following system components is the brain of a computer?

(A) Circuit board

(B) CPU

(C) Memory

(D) Network card

What is the built-in permanent memory in a computer called?

(A) RAM

(B) ROM

(C) CPU

(D) CD-ROM

White Box testing, a software testing technique is sometimes called ______.

(A) Basic path

(B) Graph testing

(C) Data flow

(D) Glass box testing

(E) None of these

When installing a peripheral you also usually need to install a________.

(A) server

(B) port

(C) driver

(D) password

(E) none of these

Windows 95, Windows 98, and Windows NT are known as what?

(A) processors

(B) modems

(C) operating systems

(D) domain names

What are .bas,.doc and .htm example of ?

(A) Extensions

(B) protocols

(C) Database

(D) Domains

1. Father of ‘C’ programming language
 a. Dennis Ritchie
 b. Prof Jhon Kemeny
 c. Thomas Kurtz
 d. Bill Gates

2. COBOL is widely used in applications
 a. Commercial
 b. Scientific
 c. Space
 d. Mathematical
 e. None

Identify and explain Andrew Haywood's (2007) four models of voter behaviour 

4. SMPS stands for
 a. Switched mode power supply
 b. Start mode power supply
 c. Store mode power supply
 d. Single mode power supply
 e. None

7. Best Quality graphics is produced by
 a. Dot Matix
 b. Laser Printer
 c. Inkjet Printer
 d. Plotter
 e. None

9. ________translates and executes program at run time line by line
 a. Compiler
 b. Interpreter
 c. Linker
 d. Loader
 e. None

10. Unwanted repetitious messages, such as unsolicited bulk e-mail is known as
 a. Spam
 b. Trash
 c. Calibri
 d. Courier
 e. None