Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
please answer all questions
(14) If you mix two solutions and the temperature of the mixture...
Concentrations of solute in solvent, whether in saturated solutions or not, can be expressed in many...
Concentrations of solute in solvent, whether in saturated solutions or not, can be expressed in many ways (molarity, molality, ppm, percent by mass, etc.). Molarity = moles of solute / liter of solution molality = moles of solute / kg of solvent ppm = mg solute / liter of solution ppb = microgram of solute / liter of solution %-by-mass = (grams of solute / grams of solution) x 100% To convert from %-by-mass to Molarity, assume 100g of solution,...
40) boda Areal gas most closely approaches ideal behavior at __. a) 1.0 atm and 273K...
40) boda Areal gas most closely approaches ideal behavior at __. a) 1.0 atm and 273K 10 atm and 298K 10 atm and 273K 1.0 atm and 298K e) 0.5 atm and 273K 41) 5059 What is the mole fraction of methanol, CH3OH, in an ethanol solution, CH,OH, that is 4.25 m methanol? 0.126 0.145 0.164 0.196 e) 0.204 42) 5059 The molality of a solution is _. a) moles of solute per liter of solution moles of solute per...
Hi, I need some help with Chemistry. Q1: Q2: Here is some background for the questions: Thank y...
Hi, I need some help with Chemistry.
Q1:
Q2:
Here is some background for the questions:
Thank you in advance.
You add 0.0336 moles of benzoic acid solute to 16.00 g of an unknown solvent, which lowers the freezing point of the solvent by 8.6 °C. Calculate the freezing point depression constant (Kf) of the unknown solvent. You dissolve 1.00 g sample of an unknown solute is in 8.00 g of lauric acid, which lowers the freezing point by 5.0...
How do you do these problems? I got all of them wrong and don't understand why....
How do you do these problems? I got all of them wrong and
don't understand why.
- 10. Which of the changes will increase the value of K, for the reaction? 2 SO2(g) + O2(g) - 2 SO3(g) AH = -200 kJ/mol A. Lowering the temperature B. Increasing the pressure (CCAdding 02 D. Removing SO, 3. Which reaction describes why the pH is not 7 for the dissolution of NaNO2 in water? ADNa+ + 2 H2O = NaOH + H2O*...
Each of the identical volumetric flasks contains the same solution at two different temperatures. What changes...
Each of the identical volumetric flasks contains the same solution at two different temperatures. What changes for the solution with temperature? O molarity O molality both molarity and molality neither molarity or molality 55 Glven the following information: H. (2)+F(0) — 2 HF(g) AH Rx = - 546.6 kJ/mol 2H,(9) +0,(9) — 2H.O() AH Rx = - 57L6 kJ/mol Find the standard enthalpy change for the following reaction: 2F (9) + 2H 0(1) 4 HF) +0,6) The concentration of a...
Multipart homework question for Chemistry I need help with. thank you. Which of the following solutions...
Multipart homework question for Chemistry I need help
with. thank you.
Which of the following solutions has a molarity of 2.0 0.050 mole of solute in 25.0 mL of solution 2.0 moles of solute in 500.0 mL of solution O 3. moles of solute in 3.0 L of solution O 0.020 mole of solute in 50.0 mL of solution Calculate the concentration in % (m/m) of a solution containing 35.0 g of LiF dissolved in 315.0 g of H20. 10.0%...
How do you find the mass percent, mole fraction, and the molality for these two problems?...
How do you find the mass percent, mole fraction, and the
molality for these two problems?
P1. (Sec. 11.1) A solution is prepared by dissolving 113 grams of acetone (C3H6O) in 662 grams of water. With this information, calculate the solution's mass percent % of the solute, mole fraction of the solute, and the solutions molality. a) b) c) d) e) Mass Percent: 88.7%; Mole Fraction (Solute): 0.9068; & Molality: 5.70 mol/kg Mass Percent: 11.3%; Mole Fraction (Solute): 0.0932; &...
PART 1 of 3: Consider two ionic compounds that dissolve fully in water at room temperature....
PART 1 of 3: Consider two ionic compounds that dissolve fully in water at room temperature. You an experiment and determine the following: * Compound A has stronger solute-solute attractions than solute-solvent attractions. * Compound B has stronger solute-solvent attractions than solute-solute attractions. Which of the following best describes the ΔH solution for Compound A and Compound B, respectively? ANSWER CHOICES: 1.) Both processes are endothermic, but Compound A is more endothermic 2.) Exothermic, endothermic 3.) Both processes are exothermic,...
1 While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the...
1 While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the reagents before the reaction was 22.04"C and final temperature after the reaction was 25.11"C. Circle the correct answers below. Is the chemical reaction exothermic or endothermic? a. Exothermic Endothermic b. Is qoln positive or negative? Negative Positive Is AHrn positive or negative c. Negative Positive You realize that AT needs to be in Kelvin not Celsius. What should you do? d. Convert...
1. While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the r...
1. While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the reagents before the reaction was 22.04°C and final temperature after the reaction was 25.11°C. Circle the correct answers below. a. Is the chemical reaction exothermic or endothermic? Exothermic Endothermic b. Is qsoln positive or negative? Positive Negative c. Is AHxn positive or negative? Positive Negative d. You realize that AT needs to be in Kelvin not Celsius. What should you do? Retake...
40) boda Areal gas most closely approaches ideal behavior at __. a) 1.0 atm and 273K 10 atm and 298K 10 atm and 273K 1.0 atm and 298K e) 0.5 atm and 273K 41) 5059 What is the mole fraction of methanol, CH3OH, in an ethanol solution, CH,OH, that is 4.25 m methanol? 0.126 0.145 0.164 0.196 e) 0.204 42) 5059 The molality of a solution is _. a) moles of solute per liter of solution moles of solute per...
Hi, I need some help with Chemistry.
Q1:
Q2:
Here is some background for the questions:
Thank you in advance.
You add 0.0336 moles of benzoic acid solute to 16.00 g of an unknown solvent, which lowers the freezing point of the solvent by 8.6 °C. Calculate the freezing point depression constant (Kf) of the unknown solvent. You dissolve 1.00 g sample of an unknown solute is in 8.00 g of lauric acid, which lowers the freezing point by 5.0...
How do you do these problems? I got all of them wrong and
don't understand why.
- 10. Which of the changes will increase the value of K, for the reaction? 2 SO2(g) + O2(g) - 2 SO3(g) AH = -200 kJ/mol A. Lowering the temperature B. Increasing the pressure (CCAdding 02 D. Removing SO, 3. Which reaction describes why the pH is not 7 for the dissolution of NaNO2 in water? ADNa+ + 2 H2O = NaOH + H2O*...
Each of the identical volumetric flasks contains the same solution at two different temperatures. What changes for the solution with temperature? O molarity O molality both molarity and molality neither molarity or molality 55 Glven the following information: H. (2)+F(0) — 2 HF(g) AH Rx = - 546.6 kJ/mol 2H,(9) +0,(9) — 2H.O() AH Rx = - 57L6 kJ/mol Find the standard enthalpy change for the following reaction: 2F (9) + 2H 0(1) 4 HF) +0,6) The concentration of a...
Multipart homework question for Chemistry I need help
with. thank you.
Which of the following solutions has a molarity of 2.0 0.050 mole of solute in 25.0 mL of solution 2.0 moles of solute in 500.0 mL of solution O 3. moles of solute in 3.0 L of solution O 0.020 mole of solute in 50.0 mL of solution Calculate the concentration in % (m/m) of a solution containing 35.0 g of LiF dissolved in 315.0 g of H20. 10.0%...
How do you find the mass percent, mole fraction, and the
molality for these two problems?
P1. (Sec. 11.1) A solution is prepared by dissolving 113 grams of acetone (C3H6O) in 662 grams of water. With this information, calculate the solution's mass percent % of the solute, mole fraction of the solute, and the solutions molality. a) b) c) d) e) Mass Percent: 88.7%; Mole Fraction (Solute): 0.9068; & Molality: 5.70 mol/kg Mass Percent: 11.3%; Mole Fraction (Solute): 0.0932; &...
1 While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the reagents before the reaction was 22.04"C and final temperature after the reaction was 25.11"C. Circle the correct answers below. Is the chemical reaction exothermic or endothermic? a. Exothermic Endothermic b. Is qoln positive or negative? Negative Positive Is AHrn positive or negative c. Negative Positive You realize that AT needs to be in Kelvin not Celsius. What should you do? d. Convert...
1. While performing a calorimetry experiment you mix 2 chemical solutions together and the initial temperature of the reagents before the reaction was 22.04°C and final temperature after the reaction was 25.11°C. Circle the correct answers below. a. Is the chemical reaction exothermic or endothermic? Exothermic Endothermic b. Is qsoln positive or negative? Positive Negative c. Is AHxn positive or negative? Positive Negative d. You realize that AT needs to be in Kelvin not Celsius. What should you do? Retake...
Most questions answered within 3 hours.
-
How much must I invest today if I want to withdraw 1/3 of my
original investment...
asked 1 hour ago -
What is meant by a “term premium”?
What can explain such a premium? Is it a...
asked 2 hours ago -
23. Which molecule has only covalent bonds? A. CO2 B. Al2O3 C.
Mg3N2
24. The octet...
asked 3 hours ago -
the
total pressure for a mixture of N2O4 and NO2 is 2.20 atm. If Kp=
7.10...
asked 3 hours ago -
Delaware Corp. prepared a master budget that included $22,385
for direct materials, $28,600 for direct labor,...
asked 3 hours ago -
For pesticide HCB (hexachlorobenzene), its logarithmic partition
coefficient log Kow is 5.6. What would be the...
asked 3 hours ago -
A chemist requires 0.422 mil Na2CO3 for a reaction. How many
grams does this correspond to?
asked 3 hours ago -
If the vapor pressure of carvone is approximately 9.4 torr at 99
°C, approximately how much...
asked 3 hours ago -
A juice bottling company is carrying out a test at 10%
significance that the mean population...
asked 3 hours ago -
What is the reflectivity (in percent) needed to keep water at a
temperature near its freezing...
asked 4 hours ago -
Suppose that the average surface temperature of Earth is 300K.
Assume this is uniform over its...
asked 4 hours ago -
Draw the condensed structural formula for alkenes and alkynes or
the line-angle structural formula for cycloalkenes...
asked 4 hours ago