Homework Answers
9) Helium is nonpolar in nature thus, it involve dispersion force or vanderwaal interaction which are responsible for the liquification of helium.
10) True. Positive ∆H means endothermic reaction which favors reactant in Chemical or physical change.
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9. What intermolecular force is responsible for the liquefaction of helium? 10. A positive AH favors...
A reaction that has a positive AH and a positive AS will be spontaneous at high...
A reaction that has a positive AH and a positive AS will be spontaneous at high temperatures spontaneous at low temperatures spontaneous at all temperatures nonspontaneous at all temperatures QUESTION 6 Which of the following statements is FALSE? Keg for a reaction written in reverse is the reciprocal of the key for the forward reaction A reaction quotient (Q) larger than Keq means that the reaction will shift toward reactants Chemical equilibrium indicates that reactants and products are present in...
What is the correct answer 7. Which of the following statements is true concerning the reaction...
What is the correct answer
7. Which of the following statements is true concerning the reaction shown below? Circle the best answer. 20.02 a. The enthalpy change for this reaction is zero. b. This reaction will occur with no transfer of energy. c. For this reaction, AH is negative. d. This is a combustion reaction. e. For this reaction, AH is positive.
b. What are its units? Is Density, extensive or intensive? C. 23. (True/ False) a) Physical...
b. What are its units? Is Density, extensive or intensive? C. 23. (True/ False) a) Physical Properties include color, melting point, solubility, and physical state at a specified temperature. (True/ False) b) Density= mass/weight. (True/ False) c) Extensive properties, such as mass and volume, depend on the size of the matter sample. (True/False) d) Density is not one of the physical properties of matter. (True/ False) 24. A weather balloon is inflated to a volume of 2.2 x 10 L...
Can someone solve these? ill award a thumbs up Force Balance and Free body Diagrams 9....
Can someone solve these? ill award a thumbs up
Force Balance and Free body Diagrams 9. (2) True or false: Dynamic equilibrium involves a net force equal to zero and the object at rest 10. (2) True or false: A hockey puck sliding on a frictionless Ice rink at constant velocity is in dynamic equilibrium. 11. (2) True or False: A stoplight hanging motionless from a wire is in dynamic equilibrium For questions 12, 13 and 14 draw and label...
What do the positive helium ions do for the e / m apparatus? Choose the most...
What do the positive helium ions do for the e / m apparatus? Choose the most complete, best answer. They help focus the electron beam and they emit photons which allow the beam to be seen. They help focus the electron beam. They emit photons which allow the beam to be seen. They get hot and glow. They are there so that the bulb does not implod They are there only when the electrons are not orbiting, otherwise, they move...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in an Syl reaction? a. Which reacts faster in an Sy2 reaction? CHs CH, CH,CHCHCH, or CH,CH,CCHy Br Br Br b. Which reacts faster in an El reaction? d. Which reacts faster in an E2 reaction? Br Br 10)2-bromobutane will react with OCH, in the present of dimethylsulfoxide, DMSO, as a solvent to create 1-butene and 2-butene by an elimination reaction A) Write the chemical...
8. Why does carbon contain only 4 valence electrons when it has 6 total electrons? 9.True...
8. Why does carbon contain only 4 valence electrons when it has
6 total electrons?
9.True or False. Oxygen and sulfur have the same number of
valence electrons.
10. True or False. Beryllium and magnesium have the same number
of valence electrons.
11. True or False. Sodium and magnesium have the same number of
valence electrons.
12. What is the relationship between the number of valence
electrons and the column on the periodic table?
13. How is the number of...
please check if those are right. also is the 3rd one suppose to be a positive...
please check if those are right. also is the 3rd one suppose to be
a positive or negtive number?
thanks!
Nitrogen gas and hydrogen gas react to form ammonia according to the following thermochemical equation. 3H, +N, -+ 2NH, AH = -96 kJ Write the balanced chemical equation for a reaction involving these substances with the following change in enthalpy. AH = 192 kJ • Enter a balanced chemical equation. • Do NOT enter phase designations. Provide your answer below:...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
Question 2 3 pts Lorentz Force Changing the current through the wire would have changed the...
Question 2 3 pts Lorentz Force Changing the current through the wire would have changed the magnetic force on the wire. True False Question 3 3 pts Lorentz Force If the balance reads a value lower than the true mass of the magnet, the force on the loop is No answer text provided. downward upward zero Question 4 3 pts Lorentz Force Changing the current through the wire would have changed normal force on the magnet. True False Question 5...
A reaction that has a positive AH and a positive AS will be spontaneous at high temperatures spontaneous at low temperatures spontaneous at all temperatures nonspontaneous at all temperatures QUESTION 6 Which of the following statements is FALSE? Keg for a reaction written in reverse is the reciprocal of the key for the forward reaction A reaction quotient (Q) larger than Keq means that the reaction will shift toward reactants Chemical equilibrium indicates that reactants and products are present in...
What is the correct answer
7. Which of the following statements is true concerning the reaction shown below? Circle the best answer. 20.02 a. The enthalpy change for this reaction is zero. b. This reaction will occur with no transfer of energy. c. For this reaction, AH is negative. d. This is a combustion reaction. e. For this reaction, AH is positive.
b. What are its units? Is Density, extensive or intensive? C. 23. (True/ False) a) Physical Properties include color, melting point, solubility, and physical state at a specified temperature. (True/ False) b) Density= mass/weight. (True/ False) c) Extensive properties, such as mass and volume, depend on the size of the matter sample. (True/False) d) Density is not one of the physical properties of matter. (True/ False) 24. A weather balloon is inflated to a volume of 2.2 x 10 L...
Can someone solve these? ill award a thumbs up
Force Balance and Free body Diagrams 9. (2) True or false: Dynamic equilibrium involves a net force equal to zero and the object at rest 10. (2) True or false: A hockey puck sliding on a frictionless Ice rink at constant velocity is in dynamic equilibrium. 11. (2) True or False: A stoplight hanging motionless from a wire is in dynamic equilibrium For questions 12, 13 and 14 draw and label...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in an Syl reaction? a. Which reacts faster in an Sy2 reaction? CHs CH, CH,CHCHCH, or CH,CH,CCHy Br Br Br b. Which reacts faster in an El reaction? d. Which reacts faster in an E2 reaction? Br Br 10)2-bromobutane will react with OCH, in the present of dimethylsulfoxide, DMSO, as a solvent to create 1-butene and 2-butene by an elimination reaction A) Write the chemical...
8. Why does carbon contain only 4 valence electrons when it has
6 total electrons?
9.True or False. Oxygen and sulfur have the same number of
valence electrons.
10. True or False. Beryllium and magnesium have the same number
of valence electrons.
11. True or False. Sodium and magnesium have the same number of
valence electrons.
12. What is the relationship between the number of valence
electrons and the column on the periodic table?
13. How is the number of...
please check if those are right. also is the 3rd one suppose to be
a positive or negtive number?
thanks!
Nitrogen gas and hydrogen gas react to form ammonia according to the following thermochemical equation. 3H, +N, -+ 2NH, AH = -96 kJ Write the balanced chemical equation for a reaction involving these substances with the following change in enthalpy. AH = 192 kJ • Enter a balanced chemical equation. • Do NOT enter phase designations. Provide your answer below:...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
Question 2 3 pts Lorentz Force Changing the current through the wire would have changed the magnetic force on the wire. True False Question 3 3 pts Lorentz Force If the balance reads a value lower than the true mass of the magnet, the force on the loop is No answer text provided. downward upward zero Question 4 3 pts Lorentz Force Changing the current through the wire would have changed normal force on the magnet. True False Question 5...
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