1. A student attempts to identify an unknown compound by the method used in this experiment. She finds that when she heated a sample weighing 0.4862 g the mass barely changed, dropping to 0.4855 g. When the product was converted to a chloride, the mass went up, to 0.5247 g.

a. Is the sample a carbonate? NO

b. What are the two compounds that might be in the unknown? KHCO3 and NaHCO3

c. Write the chemical equation for the overall reaction that would occur when the original compound was converted to a chloride. If the compound is a hydrogen carbonate, use the sum of Reactions 1 and 2. If the sample is a carbonate, use Reaction 2. Write the equation for a sodium salt and then for a potassium salt.

d. How many moles of the chloride salt would be produced from one mole of original compound? _____

e. How many grams of the chloride salt would be produced from one molar mass of original compound? Molar masses: NaHCO3 84.008 g Na2CO3 105.99 g NaCl 58.44 g KHCO3 100.118 g K2CO3 138.21 g KCl 74.55 g

If a sodium salt, ____________ g original compound → ____________ g chloride I

f a potassium salt, ____________ g original compound → ____________ g chloride

f. What is the theoretical value of Q, if she has an Na salt? ____________ if she has a K salt? ____________

g. What was the observed value of Q? ____________

h. Which compound did she have as an unknown?

I have bolded my own answers. I need help with the rest, please show work!

A factorial experiment was designed to test for any significant differences in the time needed to perform English to foreign language translations with two computerized language translators. Because the type of language translated was also considered a significant factor, translations were made with both systems for three different languages: Spanish, French, and German. Use the following data for translation time in hours.

Test for any significant differences due to language translator system (Factor A), type of language (Factor B), and interaction. Use a= .05.

Complete the following ANOVA table (to 2 decimals, if necessary). Round your p-value to 4 decimal places.

Data Structures Homework – Singly Linked Lists

Create a singly linked that represents a school. The school has multiple classes. Each class has a different number of students.

class student

{

Long ID;

string Name;

string Address;

float grades[3];

student *below;

};

class Node // the node represents a class in school

{

int ID;

int NoOfStudents;

int NoOfQuizes;

student *t;// a linked list of students is allocated dynamically

Node *Next;

};

class school {

string Name;

Node *Head;

int n;//number of classes in school

};

First, you need to implement the following constructors and destructors:

1- School constructor: Creates an empty school. It takes the school name as a parameter and sets the number of classes to zero.

2- Class (Node) constructor: Sets the class ID, sets the number of students to zero, the NoOfQuizes to zero and the pointers to NULL.

3- Student constructor: Sets the student’s ID, Name and address which are passed as parameters once a student is created.

4- Student destructor: contains the cout statement: ”student destructor is called”

5- Class (Node) destructor: deletes all students in class.

6- School destructor: deletes all the classes in the school.

In your main function create an empty school by entering the name of the school from keyboard (this calls the school constructor), then display the following menu to the user and perform tasks accordingly.

In addition to constructors and destructors, you need to define a function to perform each of the following tasks.

Your program must keep on displaying this list until the user chooses Exit (12).

1. Create a class: This function creates a new class in the school by reading the class information from a text file that has the following format. The class is added to the end of the school linked list. Note that this will call the Node constructor (once)+ the student constructor (multiple times).

Class ID

NoOfStudents

Student ID Student Name Student Address

Student ID Student Name Student Address

Student ID Student Name Student Address

……..

2. Read quiz grades: This function takes the class ID and the number of the quiz (first:0, second:1, Final:2) from keyboard and reads the grades for all students in the class in a certain quiz. Sort the students alphabetically then read their grades (this calls the function sort students (8)).

3. Compute student’s average: Take a student’s ID and return his average

4. Add student: Enter class ID, read a student’s information (ID & name & address from keyboard), add a student to the beginning of the class list. Note that this calls the student’s constructor. Also, read (NoOfQuizes) grades for this student.

5. Delete student: Enter student’s ID, search for the student in the school and delete the student from his class (if found).

6. Delete class: Enter class ID, find the class, delete the list of students in the class (this uses class destructor) then delete the class node from the list (the rest of the school list should remain intact).

7. Sort students: Enter class ID and sort the students of that class based on their names in alphabetical order.

8. Find the student with maximum average in a certain class: Enter class ID, find student with maximum average, then display the student (name + ID).

9. Display student given his name: enter student’s name, find the student and display his ID, grades and average.

10. Display a class given its ID: enter a class ID, find the class and neatly display the information of all the students in that class.

11. Display school: Display all classes in a school. Display each class ID together with its students (ID, name and address of each student).

12. Exit .

In your main function, create a school and test all your work above.

make it clearly thanks..!!

Rank the following option-free bonds based on their reinvestment risk, from the highest to the lowest:

Bond U: a 20-year zero-coupon bond

Bond V: a 20-year 8% coupon bond

Bond W: a 2-year 8% coupon bond.

. Provide a weighted directed graph G = (V, E, c) that includes three vertices a, b, and c, and for which the maximum-cost simple path P from a to b includes vertex c, but the subpath from a to c is not the maximum-cost path from a to c

Reflect on the section Planning and Executing Change Effectively, in Chapter 7 of the text (book) Carpenter, M., Bauer, T., & Erdogan, B. (2010). Management Principles, v. 1.1. Summarize the key steps in planning and executing change in a 500 word or more journal entry.

Can irreversible isothermal work be used to predict spontaneity of processes for thermodynamic systems in the same way as mechanical systems (which follows the principle: Mechanical systems with spontaneously lower their potential energy V)?

Please provide and argument for your answer. This is supposed to be a debatable question.