Question

In: Chemistry

Hey yall, Im working on a quiz I completed. I really need to get a 100...

Hey yall, Im working on a quiz I completed. I really need to get a 100 I worked all the problems out and i was wondering if one of yall would mind checking it for me. If i missed one if yall could tell me how to get the correct answer?

1.The intermolecular forces present in CH3NH2 include which of the following?
I. dipole-dipole
II. ion-dipole
III. dispersion
IV. hydrogen bonding
ANS: I, III, and IV

2. A liquid boils when its
ANS: vapor pressure is equal to, or greater than, the external pressure pushing on it.
- I was actually torn between picking this answer choice and "vapor pressure is exactly one atm"...is that wrong?

3. How much energy (heat) is required to convert 52.0 g of ice at –10.0°C to steam at 100°C?

specific heat of ice:	2.09 J/g·°C	ΔHfus = 6.02 kJ/mol
specific heat of water:	4.18 J/g·°C	ΔHvap = 40.7 kJ/mol

specific heat of steam:

1.84 J/g·°C

ANS:157.8 kJ

4. Which of the following liquids would have the highest viscosity at 25°C?

CH3Br

C2H5OH

CH2Cl2

ANS : HOCH2CH2OH

CH3OCH3

5. Which of the following would be expected to have the lowest vapor pressure at room temperature?

ANS: water, bp = 100°C

acetone, bp = 56°C

ethanol, bp = 78°C

methanol, bp = 65°C

6. Given the following liquids and their boiling points, which has the highest vapor pressure at its normal boiling point?

ANS:

The vapor pressure of each of the liquids at its normal boiling point would be the same.

ethanol, bp = 78°C

benzene, bp = 80°C

water, bp = 100°C

methanol, bp = 65°C

7. Which of the following liquids would make a good solvent for iodine, I2?

ANS: CS2

CH3OH

HCl

H2O

NH3

8. What is the boiling point of a solution of 11.0 g of lactose (C12H22O11) in 145.0g of water? (Kb (H2O) = 0.52 °C/m)
ANS: 100.1 deg C

9. Calculate the molality of a 20.0% by mass ammonium sulfate (NH4)2SO4 solution. The density of the solution is 1.117 g/mL.
ANS: 1.89

10. A solution that is 33.6 % by mass of phenol (C6H5OH) in water is prepared. What is the mole fraction of the phenol?

ANS: 0.0883

Expert Solution

queen_honey_blossom answered 1 month ago

******You do not need to get everything working exactly as it says, I mostly just need...

******You do not need to get everything working exactly as it says, I mostly just need an outline of how to create this GUI and add up the costs and print them all out. Any help at all will be greatly appreciated******* Design and implement a Java program that creates a GUI that will allow a customer to order pizza and other items from a Pizza Paarlor. The customer should be able to order a variety of items which are listed...

Hey, I have a code that I am working on to make a garden plot calculator,...

Hey, I have a code that I am working on to make a garden plot calculator, however I am reaching an error that I cannot seem to get past. Please help. import math # GarednPlot contains all the utility functions class GardenPlot: # constructor function: Welcomes the user and sets default values def __init__(self): print("Welcome!") self.length = 0 self.radius = 0 self.depth = 0 # Sets the length of the GardenPlot and returns that length def setLength(self): self.length = float(input("Enter...

hey i need perfect answer to following query. Needs 200 words for complete query. i need...

hey i need perfect answer to following query. Needs 200 words for complete query. i need typed solution . Don't post any pic in solution. Describe some important changes you would suggest to a “trebuchet” manufacturer. Explain your improvement in terms of motion in two dimensions.

I get an error when im trying to run this java program, I would appreciate if...

I get an error when im trying to run this java program, I would appreciate if someone helped me asap, I will make sure to leave a good review. thank you in advance! java class Node public class Node { private char item; private Node next; Object getNext; public Node(){ item = ' '; next = null; } public Node(char newItem) { setItem(newItem); next = null; } public Node(char newItem, Node newNext){ setItem(newItem); setNext(newNext); } public void setItem(char newItem){...

please I don't really know how to start answering this question I really need to understand...

please I don't really know how to start answering this question I really need to understand it please show the work with a clear handwriting A collision in one dimension A mass m1 = 2 kg moving at v1i = 3 ms−1 collides with another mass m2 = 4 kg moving at v2i = −2 ms−1. After the collision the mass m1 moves at v1f = −3.66 ms−1. (a) Calculate the final velocity of the mass m2. (b) After the...

Hey guys so ive been working on these Radix for quite sometime but I keep hitting...

Hey guys so ive been working on these Radix for quite sometime but I keep hitting roadblocks on my todos. Ive implement the first TODO but I cant get the stringRadixSort to work properly as well nor the ChainOfNodes mergeTwoChainsIntoThird() function. Please feel free to rewrite anything you see wrong with it. Ive also provided the Lab Description down below as well for what the output should be and what to do. Thanks again for your guys help! 1) Implement...

JAVA JAVA JAVA Hey i need to find a java code for my homework, this is...

JAVA JAVA JAVA Hey i need to find a java code for my homework, this is my first java homework so for you i don't think it will be hard for you. (basic stuff) the problem: Write a complete Java program The transport Company in which you are the engineer responsible of operations for the optimization of the autonomous transport of liquid bulk goods, got a design contract for an automated intelligent transport management system that are autonomous trucks which...

Ch7/Financial Accounting Please, I need to get answered to the following:( 100 words for each part)....

Ch7/Financial Accounting Please, I need to get answered to the following:( 100 words for each part). 1. Describe physical controls, independent internal verification, and human resource controls. For each internal control principle, explain what weaknesses are being prevented for the company. 2. “Describe” the Ch6 – inventory turnover and days in inventory ratios. Explain the importance of each ratio and how each ratio assists the investor in evaluating a company’s performance.

Please, I need to get this right. No one is yet to get it right, it...

Please, I need to get this right. No one is yet to get it right, it has been answered on Chegg but is wrong In a psychrometric process, Volume of a classroom = 300 m^3. and temperature in the room is T= 20 oC, P=100 kPa relative humidity = 50% if all the water vapor of air in the room is converted to liquid at the same temperature, what is the volume of the liquid water (mL). I believe the...

I need to implement incrementalInserstionSort im stuck on that part import java.util.*; /** * This class...

I need to implement incrementalInserstionSort im stuck on that part import java.util.*; /** * This class represents chains of linked nodes that * can be sorted by a Shell sort. * * @author Charles Hoot * @author Frank M. Carrano * Modified by atb * @author YOUR NAME * @version 9/29/2020 */ public class ChainSort> { private Node firstNode; // reference to first node public ChainSort() { this.firstNode = null; } public void display() { Node currentNode = this.firstNode; while...