Homework Answers
Add Answer to:
Question 1 (2 points) Based on the thermochemical equation 2 C4H10 + 13 O2 8 CO2...
Based on the thermochemical equation 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O...
Based on the thermochemical equation 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O ΔH = -5316 kJ, if (5.81x10^1) g of C4H10 (MM = 58.14 g/mol) reacted with excess oxygen, how many kJ of heat would be released? NOTE: The word "released" means that NO NEGATIVE SIGN IS NEEDED in your answer. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. PLEASE...
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8...
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8 CO2 + 10 H20 AH - -5316 kJ, how many grams of C4H10 (MM = 58.14 g/mol) would have to react in order to release (7.44x10^4) kJ of heat? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest...
Question 4 (2 points) What is the value of AH in kJ for the overall reaction:...
Question 4 (2 points) What is the value of AH in kJ for the overall reaction: 4 NO + 6 H20 + 4 NH3 +5 O2 given these reaction steps? 1. N2 + O2 + 2 NO AH = (1.97x10^2) kJ II. 2 NH3 + N2 + 3 H2 AH = (8.870x10^1) kJ III. 2 H2O → 2 H2 + O2 AH = (4.7900x10^2) kJ Enter your answer in scientific notation with 3 sig figs. Do not include any units...
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution...
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution is (1.20x10^0) g/mL and the solute has a molar mass of (8.3800x10^1) g/mol. What is the Molarity of solute of this solution? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb...
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
Question 1 (2 points) ✓ Saved The heat capacity of a metal is 0.45 J/g °C....
Question 1 (2 points) ✓ Saved The heat capacity of a metal is 0.45 J/g °C. How many Joules of heat would it take to raise the temperature of (4.9400x10^1) g of this metal from (5.69x10^1) to 95°C? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Jxzo o Answer
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing...
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.95x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kp = 1.86°C/m. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
The thermochemical equation for the combustion of ethanol is: 5. C2H&OH (I)+3 O2 (g) 2 CO2...
The thermochemical equation for the combustion of ethanol is: 5. C2H&OH (I)+3 O2 (g) 2 CO2 (g)+3 H2O (g) AH-1360 kJ What is the enthalpy change when 3.50 kg of ethanol react with excess oxygen?
At an unknown temperature a solution made of (5.180x10^0) g of a non-volatile solute dissolved in...
At an unknown temperature a solution made of (5.180x10^0) g of a non-volatile solute dissolved in 100.0 g of water has a vapor pressure of (5.54x10^1) mm Hg. What is the vapor pressure of pure water (in mm Hg) at this unknown temperature? The molar mass of the solute is (4.620x10^1) g/mol. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is...
For the balanced thermochemical equation below: 2 Mg(s) + O2(8) + 2Mg0g AH (MgO) --601.8 Assuming...
For the balanced thermochemical equation below: 2 Mg(s) + O2(8) + 2Mg0g AH (MgO) --601.8 Assuming 40.0 g of oxygen gas is consumed in the presence of an excess amount of magnesium, how much heat in kJ is evolved (sign is assumed to be negative for heat evolved; do not include the sign). Report to the nearest 0.1 kJ.
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8 CO2 + 10 H20 AH - -5316 kJ, how many grams of C4H10 (MM = 58.14 g/mol) would have to react in order to release (7.44x10^4) kJ of heat? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest...
Question 4 (2 points) What is the value of AH in kJ for the overall reaction: 4 NO + 6 H20 + 4 NH3 +5 O2 given these reaction steps? 1. N2 + O2 + 2 NO AH = (1.97x10^2) kJ II. 2 NH3 + N2 + 3 H2 AH = (8.870x10^1) kJ III. 2 H2O → 2 H2 + O2 AH = (4.7900x10^2) kJ Enter your answer in scientific notation with 3 sig figs. Do not include any units...
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution is (1.20x10^0) g/mL and the solute has a molar mass of (8.3800x10^1) g/mol. What is the Molarity of solute of this solution? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
Question 1 (2 points) ✓ Saved The heat capacity of a metal is 0.45 J/g °C. How many Joules of heat would it take to raise the temperature of (4.9400x10^1) g of this metal from (5.69x10^1) to 95°C? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Jxzo o Answer
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.95x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kp = 1.86°C/m. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
The thermochemical equation for the combustion of ethanol is: 5. C2H&OH (I)+3 O2 (g) 2 CO2 (g)+3 H2O (g) AH-1360 kJ What is the enthalpy change when 3.50 kg of ethanol react with excess oxygen?
At an unknown temperature a solution made of (5.180x10^0) g of a non-volatile solute dissolved in 100.0 g of water has a vapor pressure of (5.54x10^1) mm Hg. What is the vapor pressure of pure water (in mm Hg) at this unknown temperature? The molar mass of the solute is (4.620x10^1) g/mol. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is...
For the balanced thermochemical equation below: 2 Mg(s) + O2(8) + 2Mg0g AH (MgO) --601.8 Assuming 40.0 g of oxygen gas is consumed in the presence of an excess amount of magnesium, how much heat in kJ is evolved (sign is assumed to be negative for heat evolved; do not include the sign). Report to the nearest 0.1 kJ.
Most questions answered within 3 hours.
-
4. Here is a function that is either a demand function or a
supply function (but...
asked 2 minutes ago -
c++
modify the attached unsorted linked list class into a sorted linked
list class
#include <iostream>...
asked 7 minutes ago -
True or False : If we believe that the effect of advertising for
a vacation resort...
asked 40 minutes ago -
Observer A stands at the top of the cliff and throws a ball
straight upwards with...
asked 32 minutes ago -
Witness Manufacturing produces two types of cameras: 35mm and
digital. The cameras are produced using one...
asked 32 minutes ago -
For the net cash flow
series, find the external rate of return (EROR) using the MIRR...
asked 35 minutes ago -
The United States has a population of 327 million and has 206
million people that are...
asked 36 minutes ago -
Calculate the energy E of a sample of 2.10 mol of ideal oxygen
gas ( O...
asked 39 minutes ago -
On January 31, 2018, Allowance for Doubtful Accounts has a
credit balance of 25,000. During 2018,...
asked 41 minutes ago -
FOR INCOME TAX PURPOSES, THE SALE OF AN UNICORPORATED BUSINESS
DOES WHICH OF THE FOLLOWING
GENERALLY...
asked 1 hour ago -
Eileen and Sarah begin the bean Buzz Coffee Shop in
2016 as equal partners. In 2018,...
asked 1 hour ago -
draw a schematic model of the molecular architecture
for HDPE, LLDPE and LDPE.
asked 1 hour ago