Acid/Base Equilibrium - Weak Acids/Bases

1. Estimate the initial [HClO] in an aqueous solution in which the [OCl^-] is 0.0000114 M at equilibrium (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration).

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

^{_________________ M}

3. Calculate the molar concentration of H⁺ ion of a 1.31×10^-2 M solution of the weak acid HClO (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration). Round your answer to 3 significant digits.

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

he following costs result from the production and sale of 4,900 drum sets manufactured by Tight Drums Company for the year ended December 31, 2017. The drum sets sell for $340 each. The company has a 35% income tax rate.

Required:

1. Prepare a contribution margin income statement for the company.
2. Compute its contribution margin per unit and its contribution margin ratio.

How many grams of dry NH4Cl need to be added to 2.20 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.50? Kb for ammonia is 1.8×10−5.

Question 2 (1 point)

Saved

Your aunt tells you that she will give you $100 today. However, if you are willing to wait, she will give you $105 in one year. You are convinced your aunt will follow through, so there is no risk in waiting. In this case,

Question 2 options:

Question 8 (1 point)

Your friend needs a loan now and is willing to pay you back $150 in 1 year and another $150 in 2 years. (i.e. you will receive both payments) How much are you willing to lend your friend now if you want an interest rate of 6%?

Question 8 options:

Calculate ? H for the reaction: C4H4(g) + 2 H2(g) — > C4H8(g) ? H = ?

Given,

C4H4(g) + 5 O2(g) — > 4 CO2(g) + 2 H2O(l) DH = -2341 kJ

C4H8(g) + 6 O2(g) — > 4 CO2(g) + 4 H2O(l) DH = -2755 kJ

H2(g) + ½ O2(g) — > H2O(l) DH = -286 kJ

JAVA - Write a program that prompts the user (at the command line) for 4 positive integers, then draws a pie chart in a window. Convert the numbers to percentages of the numbers’ total sum; color each segment differently; use Arc2D. No text fields (other than the window title) are required. Provide a driver in a separate source file to test your class.

Please use the following:

java.lang.Object

java.awt.Graphics

java.awt.Graphics2D

Take note of the following:

setPaint

setStroke

fill

// imports

public class PieChartPanel extends JPanel {

// attributes

// constructor

public void paintComponent(Graphics g) {

super.paintComponent (g);

Graphics2D g2d = ( Graphics2D ) g;

...

}

There should be a paintComponent method that calls its parent

Computer Science Multiple Choice: Please complete all 5 questions in exchange for an immediate upvote. Incomplete answers will be downvoted so please move on if they aren't worth your time. Thank you!

1. A node that is the root of a balanced tree is called a(n) _____ node.
   1. balanced
   2. master
   3. search
   4. AVL
2. When there is an addition to a node’s right subtree that creates an unbalanced search tree, you can correct it with a(n)
   1. left rotation
   2. right rotation
   3. reheap
   4. sift up
3. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the left subtree of node N, the unbalanced node’s left child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation
4. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the right subtree of node N, the unbalanced node’s left child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation
5. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the left subtree of node N, the unbalanced node’s right child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation

Note: The built-in character analysis functions (isdigit(), islower(),
etc.) may not be used.

Exercise 6.1 Write to an output file
Open an output file (stream) and write your identifying information to the
associated output file using a function. Put your standard output informa-
tion in a function named ShowHeader(). The file stream must be passed by
reference to the function. To do this, an & (ampersand) is used between the
data type (ofstream) and the name of the argument (I like to use fOut for
output file stream objects and fIn for input file stream object names).

Exercise 6.2 Read from an input file
Read/Process an input file a character at a time. Open an input file (stream)
and read a single character on each pass through a loop (a while() loop is
probably easiest) until the end of file is reached. After reading the character,
write it to the output file created earlier. The output should contain the
same characters as the input file.

Exercise 6.3 Character Analysis
Suggestion: Develop the remainder of this program in piecewise manner–
specifically, add one character analysis operation at a time, before adding
the next.
Analyze the characters in a file using functions to display their charac-
teristics, e.g., lower case, digit etc. The logic for analysis will be inside the
loop above.
Specifically, test if the character:
• is a letter.
• test if it is lower case or upper case.
• if the character is a letter, test if it is a vowel or consonant.
• is a digit.
• if the character is a digit, test if the value is odd or even.
• is a punctuation character.
• is a logical operator symbol.
Write a short function for most operations in the list above. If a character
is a letter, then it is either upper or lower case, so we only need to write one
function to test the case of the character. Do not use the built-in functions.

Note: there are no I/O (input/output) operations in the functions, only a
single character is examined.

Astronauts often see flashes when they are in space. How often these particles make their ways down to the Earth and hit us? What's the chance they hit our eyes and see flashes?

A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=177.9nm.

Part A:

What is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

Part B:

What is the atom's final speed if it now emits an identical photon in a direction that is opposite to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

==

Match the vocabulary word to its definition.

Question 4 options:

Put the following in the order they occur in making urine

Question 3 options:

Describe a simple SIMD architecture for “Image processing” application.

Hi

I have an assignment that has this question basis on network protocols (multiple access protocols):

Q1 ) Explain why collision is an issue in random access protocols but not in channelization protocols?

I need an explanision for that question

Revenues generated by a new fad product are forecast as follows: Year Revenues 1 $50,000 2 35,000 3 30,000 4 20,000 Thereafter 0 Expenses are expected to be 40% of revenues, and working capital required in each year is expected to be 20% of revenues in the following year. The product requires an immediate investment of $60,000 in plant and equipment. a. What is the initial investment in the product? Remember working capital. b. If the plant and equipment are depreciated over 4 years to a salvage value of zero using straight-line depreciation, and the firm’s tax rate is 20%, what are the project cash flows in each year? Assume the plant and equipment are worthless at the end of 4 years. (Do not round intermediate calculations.) c. If the opportunity cost of capital is 10%, what is the project's NPV? (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) d. What is project IRR? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

Discuss in what areas of your organization, or an organization you are familiar with, should conduct association analysis. With what data objects should the organization attempt to discover relationships to other data objects. What would be the business benefits of uncovering these relationships?