a) Write the net ionic equations for any reaction that occurs when each of the following salts are dissolved in water (if no reaction occurs, write "NR"):

ammonium nitrate

potassium bromide

cesium formate

b) When does the cation of a salt react with water. Illustrate answer using KBr and NH₄Br:

c) When does the anion of salt react with water. Illustrate answer using KBr and KF:

You dissolve a compound with a molecular mass of 289.49 in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 341 nm was 0.444 in a 1.000-cm cuvet. The molar absorptivity for this compound at 341 nm is ε341 = 6117 M–1 cm–1.

(a) What is the concentration of the compound in the cuvet?

(b) What is the concentration of the compound in the 10-mL flask?

(c) How many milligrams of compound were used to make the 10-mL solution?

I REALLY NEED TO LEARN THIS PROBLEM INSIDE OUT. PLEASE BE AS DERCRIPTIVE AND CLEAR AS YOU CAN BE PLEASE ( AS IF YOU WERE TEACHING A PERSON WHO KNOWS NOTHING ABOUT PHYSICS) thank so much

1. a rock is dropping from a sea cliff and the sound of it striking the ocean is heard 3.4 s later. if the speed of sound is 340 m/s, how high is the cliff?

Draw a quick sketch of mitosis next to meiosis I and meiosis II. You can do it on paper, or on your screen if you have a touchscreen. Compare and contrast them to highlight 3 similarities and 3 differences. Make sure your diagram is CLEARLY labeled

Now draw meiosis with a cell that is diploid and has 3 different sets of chromosomes (that means there is a chromosome 1, 2, and 3, with 2 copies of each). Make sure that chromosomes 1, 2, and 3 are visually distinct

: Draw a sketch of meiosis but add a nondisjunction event to it (you can pick meiosis I or II). For each final daughter cell, CLEARLY identify whether there are any issues with it – does it have the correct set of chromosomes? If it was combined with another gamete to create a zygote, will the resulting zygote have too many or too few chromosomes? Is it missing any chromosomes completely?

How do I do this> what should I model this after?

what are some myths that stood out to you, or maybe that you previously thought to be true in regards to alcohol drinking.

A 29.0-kg block is initially at rest on a horizontal surface. A horizontal force of 76.0 N is required to set the block in motion, after which a horizontal force of 57.0 N is required to keep the block moving with constant speed.

(a) Find the coefficient of static friction between the block and the surface.

(b) Find the coefficient of kinetic friction between the block and the surface.

Create a new public static method called ‘isLatinSquare’ that passes in a two-dimensional array.  This new method will return ‘true’ if the passed array is a Latin Square. ** SHOULD only be 1 or 2 lines of code

c++ language, using Xcode

Suppose the membership at a fitness club is $500 for individual, $800 for couple and $1200 for 4 people. Every month, the manager at the club says that guests will get discounts for one service per month. He provides you with the list of services that will get a discount:

Your program will be reading in a file which contains a list of services at a fitness club. The discount is determined by the type of service. For example, the file is as follows:

Cafe: Smoothies

SPA: Hair and Skin

Training: 90 day challenge

Aquatics: Kids free training session

Your program should read this file and offer this discount:

If the service is Cafe, then discount is 1% of annual fitness club fee.

If the service is SPA, then discount is 10% of the annual fitness club fee.

If the service is Training, then discount is 15% of the annual fitness club fee.

If the service is Aquatics, then no discount, but program should only offer it for the family memberships.

Your program should ask the user what type of membership they have. Based on the type of membership, your program should calculate the dollar amount discount per service and list all applicable services and benefits for that user.

Your program should be reading the file in and calculating the benefits based on the type of membership. Your program should also randomly pick among the 4 discounts or 3 depending on the type of membership and display which discount the member gets for this month.

At a university, students are assigned a system user name, which is used to log into the campus computer network system. As part of your internship with the university's IT department, your assignment is to write the code that generates system user names for students.

You will use the following logic to generate a user name:

1. Get the first three characters of the student's first name. (If the first name is less than three characters use the entire first name.)

2. Get the first three characters of the student's last name. (If the last name is less than three characters use the entire last name)

3. Get the last three characters of the student's ID number. (If the ID number is less than three characters, use the entire ID number.)

4. Concatenate the three sets of characters to generate the user name.

   For example, if a student’s name is Yogi Bear, and his ID number is T0017258, his login name would be YogBear721.

In main, obtain the student’s first name, last name and ID number, then call a function named get_login_name that accepts the student's first name, last name, and ID number as arguments and returns the student's login name as a string.

Next, in main, ask the student to generate a password then call a function to verify that it is correct. Passwords must adhere to the following rules:

• A valid password must be at least seven characters in length,

• Must have at least one uppercase letter, one lowercase letter, and one digit.

python programme

What did Smith mean by the Division of Labor and why did he see it as crucial to explaining the Wealth of Nations? What is the cause of the Division of Labor, for Smith? How does the division of labor increase productivity, in his view? What is the effect on workers? Explain how Smith's work on the division of labor challenges the standard neo-classical account of the economy built on the assumption of constant returns, and how it supports a different argument for free trade than we get from Ricardo's theory of comparative advantage

Predict whether N₂ is likely to have a relatively high or low boiling point.

Two loudspeakers are located 3.50 m apart on an outdoor stage. A listener is 19.3 m from one and 20.2 m from the other. During the sound chek, a signal generator drives the two speakers in phase with the same amplitude and frequency. The transmitted frequency is swept through the audible range (20 Hz - 20 kHz). The speed of sound in the air is 343 m/s. What are the three lowest frequencies that give minimum signal (destructive interference) at the listener's location?

(a)  Hz (lowest)

(b)  Hz (second lowest)

(c)  Hz (third lowest)

What are the three lowest frequencies that give maximum signal (constructive interference) at the listener's location?

(d)  Hz (lowest)

(e)  Hz (second lowest)

(f)  Hz (third lowest)

You were asked to include both your standard error and your percent difference when formally reporting your experimental results. What do they represent? Do you think they should be included in scientific reporting?

1. Student A performs a similar experiment with a different object and obtains the following direct measurements of the mass of their object: [21.06g, 20.98g, 21.12g, 21.21g, 21.10g]
   a. Calculate and report the average, standard deviation, and standard error of Student A’s mass

   measurements using the 1D Stats macro.
   b. Add one gram to each of the five mass values in part (a). Repeat your 1D Stats calculation and

   report the average, standard deviation, and standard error. Which values have changed and which have not? Be sure to show your work, including the new 1D Stats results. The one gram difference in each measurement represents a systematic error in the data.

   c. Change the masses back to their original values and now add a 10 gram systematic error to the first two values only. Repeat your 1D Stats and note what has and has not changed.

   d. If the only data you saw was the data table generated in part (d), do you feel you would have been able to catch the systematic errors in part (d)? Explain in one to three sentences.

Dalton's Law Of Partial Pressure show all calculations!!

a.) Earth's atmosphere consist of 78% N2 and 20% O2, and other gases. What is the partial pressure of N2 and O2 in torr, when atmospheric pressure is 1 atm?

b.) Ammonia is completely decomposed to nitrogen and hydrogen as in question 9b) At the end of the experiement the pressure of the gas mixture is 866 mmHg. Calculate the partial pressures of N2 and H2

SSG Cycles manufactures and distributes motorcycle parts and supplies. Employees are offered a variety of share-based compensation plans. Under its nonqualified stock option plan, SSG granted options to key officers on January 1, 2018. The options permit holders to acquire 7 million of the company’s $1 par common shares for $27 within the next six years, but not before January 1, 2021 (the vesting date). The market price of the shares on the date of grant is $29 per share. The fair value of the 7 million options, estimated by an appropriate option pricing model, is $8.1 per option.

Required: 1. Determine the total compensation cost pertaining to the incentive stock option plan. 2. & 3. Prepare the appropriate journal entries to record compensation expense on December 31, 2018, 2019, and 2020. Record the exercise of the options if all of the options are exercised on May 11, 2022, when the market price is $30 per share.