Homework Answers
Add Answer to:
40) Which of the following statements is FALSE? A) The enthalpy change from the solid to...
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a....
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a. The volume occupied by the gas molecules only becomes significant at very low pressures b. A given volume of gas is mostly empty space except near the condensing point c. Except near condensing point, the attractive forces between gas molecules are very small d. The attractive forces between the molecules only becomes significant at very low temperatures 2. Which of the following statements does...
A pure solid sample of Substance X is put into an evacuated flask. The flask is...
A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: 190 150 temperature (°C) 110 heat added (kJ/mol Use this graph to answer the following questions: 150.0°C What is the boiling point of X? (check all that apply) solid liquid What phase (physical state) of X would you expect to find in the flask after...
Homework week 6 1. How do gaseous, liquid, and solid methanol (CHO) compare in each of...
Homework week 6 1. How do gaseous, liquid, and solid methanol (CHO) compare in each of the following features: (a) density; (b) the space between the molecules; (c) the attractive force between the molecules? 2. Convert each pressure unit to the indicated unit. a. 3.0 atm to mm Hg b. 720 mm Hg to psi c. 424 mm Hg to atm 3. A sample of nitrogen gas has a volume of 15.0 mL at a pressure of 0.50 atm. What...
42) Which of the following compounds will be affected by the presence of an electric field...
42) Which of the following compounds will be affected by the presence of an electric field AH2 B) 02 C) HCI D) N2 43) In which of the three phases of matter would you expect hydrogen bonding between watet molecules to be the strongest? (A) solid phase (H20 Os very close together) B) liquid phase (H20 Os more separated than solid phase) C) gas phase (H20 Os much farther apart than liquid phase) D) It is equally strong in all...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas and solid iron (11,111) oxide. If carbon monoxide is present in excess, determine the amount of iron(III) oxide needed to produce 2.21x1024 iron (11,HI) oxide molecules. O 1.83 moles 3.67 moles 07.34 moles O 11.0 moles O 5.50 moles 0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction A + 2B + 3C 2D + E...
17. When a liquid sample is taken from sea level to a higher elevation, what happens...
17. When a liquid sample is taken from sea level to a higher elevation, what happens to the external (atmospheric) pressure on the liquid and the boiling point of the liquid? A) Both decrease. B) Both increase. C) Pressure goes down but boiling point goes up D) Pressure goes up but boiling point goes down. 18. In comparing gases with liquids, gases have A) greater; smaller B) greater; greater C) smaller; smaller D) smaller; greater E) none of the above...
3. Which of the following statements best explains why nitrogen gas at STP is less dense...
3. Which of the following statements best explains why nitrogen gas at STP is less dense than Xe Has at STP? a) Because Xe is a noble gas, there is less tendency for the Xe atoms to repel one another, so they pack more densely in the gas state. b) Xe atoms have a higher mass than N2 molecules, Because both gases at STP have the same number of molecules per unit volume, the Xe gas must be denser, c)...
A 10.0 g solid sample contains 14.0% NaHCO3 by mass; the rest is NaHSO4. Find the mass of CO2 gas it will produce if tre...
A 10.0 g solid sample contains 14.0% NaHCO3 by mass; the rest is NaHSO4. Find the mass of CO2 gas it will produce if treated with an excess of hydrochloric acid. Molar masses: M(NaHCO3) = 84.007 g/mol, M(CO2) = 44.01 g/mol. The gas-evolution reaction: NaHCO3(s) + HCl(aq) = NaCl(aq) + H2O(l) + CO2(g). (A) 0.733 g (B) 1.47 g (C) 2.67 g (D) 4.51 g (E) 5.24 g
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K...
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K and P = 1 atm B) T=0°C and P 760 atm C) T= 273 K and P = 0 atm D) T-273 K and P-1 atm E) T = 1 K and P = 1 atm 25) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the jar can only...
Which of the following factors determines what state a substance exists in (select all that apply) a. Size of mol...
Which of the following factors determines what state a substance exists in (select all that apply) a. Size of molecules b. Attractive forces between molecules c. Temperature d. The potential energy of the molecule e. Pressure f. Location of the molecules (in a jar/lab vs. 'outside' in the atmosphere or ocean) The term for changing from a liquid to a solid is _______ and is _________. Put endothermic or exothermic in the second blank. The term for changing from a...
A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: 190 150 temperature (°C) 110 heat added (kJ/mol Use this graph to answer the following questions: 150.0°C What is the boiling point of X? (check all that apply) solid liquid What phase (physical state) of X would you expect to find in the flask after...
Homework week 6 1. How do gaseous, liquid, and solid methanol (CHO) compare in each of the following features: (a) density; (b) the space between the molecules; (c) the attractive force between the molecules? 2. Convert each pressure unit to the indicated unit. a. 3.0 atm to mm Hg b. 720 mm Hg to psi c. 424 mm Hg to atm 3. A sample of nitrogen gas has a volume of 15.0 mL at a pressure of 0.50 atm. What...
42) Which of the following compounds will be affected by the presence of an electric field AH2 B) 02 C) HCI D) N2 43) In which of the three phases of matter would you expect hydrogen bonding between watet molecules to be the strongest? (A) solid phase (H20 Os very close together) B) liquid phase (H20 Os more separated than solid phase) C) gas phase (H20 Os much farther apart than liquid phase) D) It is equally strong in all...
Consider the reaction between solid iron(III) oxide and carbon monoxide gas to form carbon dioxide gas and solid iron (11,111) oxide. If carbon monoxide is present in excess, determine the amount of iron(III) oxide needed to produce 2.21x1024 iron (11,HI) oxide molecules. O 1.83 moles 3.67 moles 07.34 moles O 11.0 moles O 5.50 moles 0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction A + 2B + 3C 2D + E...
17. When a liquid sample is taken from sea level to a higher elevation, what happens to the external (atmospheric) pressure on the liquid and the boiling point of the liquid? A) Both decrease. B) Both increase. C) Pressure goes down but boiling point goes up D) Pressure goes up but boiling point goes down. 18. In comparing gases with liquids, gases have A) greater; smaller B) greater; greater C) smaller; smaller D) smaller; greater E) none of the above...
3. Which of the following statements best explains why nitrogen gas at STP is less dense than Xe Has at STP? a) Because Xe is a noble gas, there is less tendency for the Xe atoms to repel one another, so they pack more densely in the gas state. b) Xe atoms have a higher mass than N2 molecules, Because both gases at STP have the same number of molecules per unit volume, the Xe gas must be denser, c)...
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K and P = 1 atm B) T=0°C and P 760 atm C) T= 273 K and P = 0 atm D) T-273 K and P-1 atm E) T = 1 K and P = 1 atm 25) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the jar can only...
Most questions answered within 3 hours.
-
Task 5.2 Numerical Analysis Using Nested Loops (13 pts)
Consider the following program:
void setup()
{...
asked 8 minutes ago -
If a lossless transformer has 1000 turns for a primary winding
and 100 turns for the...
asked 17 minutes ago -
Write the net ionic equation for the precipitation reaction that
occurs when aqueous solutions of potassium...
asked 25 minutes ago -
it
should be written in c++
Your program should take numbers from the user until the...
asked 31 minutes ago -
Buses are powered by chemical reactions. Define matter and the
four states of matter. What is...
asked 49 minutes ago -
Use conservation of energy to find the velocity of a free point
charge q1 at 22cm...
asked 56 minutes ago -
First, describe policies promoted by governments of the
political right to address economic globalization. Second, describe...
asked 1 hour ago -
M2-9 Completing T-Accounts LO2-4
Following are the transactions of Dennen, Inc., for the month of
January....
asked 1 hour ago -
Write a program using python that reads from values from a text
file and plots them...
asked 1 hour ago -
Look up the density of
the metal of the object used in parts A and B...
asked 1 hour ago -
Discuss strategic considerations that Amazon and NYC politicians
had. Analyze why the deal between Amazon and...
asked 1 hour ago -
A combustion reaction is describes as a carbon source reacting
with oxygen and producing carbon dioxide...
asked 1 hour ago