A certain substance X condenses at a temperature of 138.2 °C. But if a 800. g sample of X is prepared with 46.7 g of urea sample is found to have a condensation point of 140.5 °C instead. Calculate the molal boiling point elevation constant K, of X. Round your answer to 2 significant digits. C-mol kg X S ((NH₂)2CO) dissolved in it, the H da Ar

A certain substance X condenses at a temperature of 138.2 °C. But if a 800. g sample of X is prepared with 46.7 g of urea sample is found to have a condensation point of 140.5 °C instead. Calculate the molal boiling point elevation constant K, of X. Round your answer to 2 significant digits. C-mol kg X S ((NH₂)2CO) dissolved in it, the H da Ar

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Please correct answer and don't use hend raiting

A: Step 1:The given data Equilibrium constant ( K) = 7.00 The initial concentration of CoF2 is 2.00 M…

Q: Calculate AS° for Substance C3H₁ (g) H₂(g) C3H8 (9) Question 15 of 15 C3H4(g) + 2 H₂(g) → C3H3(g).…

Q: Please correct answer and don't use hend raiting

A: thank you

Q: Please correct answer and don't use hand rating

A: To solve the given problem, let's proceed step by…

Q: The pressure of an air bag was 785 torr when inflated at 25 °C with 2.52 moles of nitrogen gas. What…

A: Recall the ideal gas equation PV=nRT Where P is pressure, V is volume, n is number of moles, R is…

Q: What is the average difference in bond energy in kJ/mol between the double bond in the O2 molecule…

A: Bond energy of O-O =144 kJ /mol Bond energy of O=O =497 kJ/mol Average difference in bond energy=…

Q: Interconverting molar mass allu Calculate to three significant digits the density of dinitrogen…

A: The given data contains, Temperature =10°CPressure = 1 atm

Q: Which of the following is true for a perfect crystal at absolute zero? A) AS 0 C) S = 0 D) S> 0 E)…

A: Third law of Thermodynamics: At absolute zero, the entropy of a perfectly crystalline substance is…

Q: Please correct answer and don't use hand rating

A: Thank you,Please rate my response.

Q: Question attached

A: A gas is said to be ideal if it follows the ideal gas equation PV=nRT

Q: For the reaction : Z F₂ (g) + 2H ₂ O ( 9 ) 4HF (g) + O₂(g) Kea is 4.5 × 103 at a certain temp. (…

A: 2F2(g) + 2H2O(g) <----> 4HF(g) + O2(g). ------(1) Keq = 4.5 × 103

Q: Please correct answer and don't use hend raiting and don't use Ai solution

A: To summarize,i. There are steps on getting the enthalpy value. (a) You must know the reaction…

Q: 0.10 mol 0.10 mol Ng) 1.0L 298 K 1OL 298 K Consider two containers of volume 1.0 L at 298 K, as…

A: The number of moles of both gases are same and temperature is kept unchanged and since in the…

Q: Please correct answer and don't use hand rating

A: 7 A : the graphical representation of the adiabatic process will vary based on the diagram type, but…

Q: g pvce , ALL MIIG ML SLEP, Propane and watel Teeact to TornM carbon monoxide and hydroger C,Hg(0)+3…

A: Given :- Step I : C3H8(g) + 3H2O(g) →3CO(g) + 7H2(g) Step II : CO(g) + H2O(g) → H2(g) + CO2(g)…

Q: Please correct answer and don't use hand rating

A: Question 7(a): How can the energy balance equation for adiabatic operation be represented…

Q: A 1-L flask is filled with 1.40 g of argon at 25 °C. A sample of ethane vapour is added to the same…

A: Answer:Here:

Q: N₂ (g) + 3H₂(g) 2NH, (g) -AH

A: given, N2 (g) + 3H2 (g) <----------> 2NH3 (g) -ΔH we have to decide the effect of…

Q: To0. Calculate the pressure of a helium sample at -207.3°C and 768 mL if it exerts a probure of 175…

A: Any gas is described by using four terms namely pressure, volume, temperature and the amount of gas.…

Q: A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas…

Q: Solve the following expression for x. What is (are) the value(s) of the positive root(s)? (x -…

Q: 36) What is the mole fraction of CO in a container with a H2 mole fraction of 0.22 and an O2 mole…

A: Given, Mole fraction of CO (XCO) = ? Mole fraction of H2 (XH2) = 0.22 Mole fraction of O2 (XO2) =…

Q: Please correct answer and don't use hand rating

A: To solve this problem, we need to apply the concepts of thermodynamics to an isothermal (constant…

Question

100%

Kf and kb equation 1

7
O
Using the Kf and Kb equations
A certain substance X condenses at a temperature of 138.2 °C. But if a 800. g sample of X is prepared with 46.7 g of urea
sample is found to have a condensation point of 140.5 °C instead. Calculate the molal boiling point elevation constant K, of X.
Round your answer to 2 significant digits.
71°F
Sunny
C-mol
Explanation
-1
2
W
S
-kg
Check
A
3
E
D
$
4
R
F
▬▬
-
■
Q Search
C
%
5
X
T
G
B
FO
6
Y
5
VOLD-CO
H
&
7
INF
U
J
8
1
K
F10
(
9
O
4
*-
F11
© 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility
CO
9:04 AM
7/29/2023
)
O
L
P
F12
H
(
0/5
((NH₂), CO) dissolved in it, the
Backspace
Andrew
7
198
Home
olo
Ar

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Calculation for moles of solute

VIEW

Step 2: Calculation for Kb

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Find AS (cal/K) when 2.9 mol of some gas O2 is heated from 7.2K to 2.6 K with P held fixed at 1.00 atm. Where Ce=a+bT, where value of a=7.82 cal.mol-1K1 and b-D0.00361 calmol-K-2 %3D Answer:
Problem 1: A major assumption in the application of the ideal gas equation of state is that the diameter of the molecules/atoms in a system is significantly shorter than the mean free path. For the two cases below, neglecting contributions from intermolecular forces, determine the validity of the applying ideal gas law. Assume a molecular diameter for ethanol (C,H;OH) of 0.430 nm and 0.505 nm for 1-butanol (C4H,OH). Case 1: ethanol (5 atm, 900 K) Case 2: 1-butanol (200 atm, 500 K)
5. What is the slope of the solid-liquid coexistence curve given 4Sfusion=50 J K-¹ mol-¹ and AVuzion=8.0 x 105 m³ mol-¹ (a) 6.3 x 106 Pa K-¹ (b) 3.1 x 106 Pa K-¹ (c) 6.3 x 10° Pa K-¹ (d) 1.2 x 10³ Pa K-¹
Practice Problems 1. A gas has a volume of 350 ml at 30 C. If the volume changes to 400 ml, what is the new temperature? 2. Submarines need to be extremely strong to withstand the extremely high pressure of water pushing down on them. An experimental research submarine with a volume of 1,510 liters has an internal pressure of 1.20atm. If the pressure of the ocean breaks the submarine forming a bubble with a pressure of 253atm pushing on it, how big will that bubble be? 3. A sample of nitrogen inside a rigid, metal container at 20.0ºC is placed inside an oven whose temperature is 50.0 ̊ C. The pressure inside the container at 20.0ºC started at 3.00 atm?
in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!!!!!!!
F1 Which of the following statements is TRUE? Select ALL that apply. Olog(x+y) = log(x) + log(y) (²) 3 2 W S log Oln 2 F2 = = x Olog: (ay) = log(x).log(y) log, (cy) = log(x) + log, (y) Olog4 = log(x) - log4(y) #3 Submit Question In(x) In(y) - log, (3) 20 E D NOV 12 F3 54 4 900 000 F4 R L % 5 F5 T MacBook Air ... ^ 6 Y & 7 F7 ▶11 * U 8 0 FB
A 100. mL sample of 0.200M aq HCl acid is added to 100mLof 0.200M aq ammonia in a calorimeter.whose heat capacity is unknown. The following reaction occurs when the 2 solutions are mixed HCl (aq)+NH3 ---> NH4Cl(aq) The temperature increase is 5°C calculate (delta)H per mole of HCl and NH3 reacted
The solubility of CaCO3 in water at 25 °C is measured to be 0.0067 Round your answer to 2 significant digits. 0 Explanation 86°F Mostly cloudy Check ☐ X H Q Search g 2. Use this information to calculate Kp for CaCO3 L sp © 2023 McGraw Hill LLC. All Rights ())) 3