This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Consider the reaction:2ClF3(g) + 2NH3(g) N2(g) + 6HF(g) + Cl2(g)When calculating the Hrxn, why is ... (Read 482 times)

asd123

  • Hero Member
  • *****
  • Posts: 557
on: Mar 21, 2021

Question 1

Consider the reaction:
   
When a 19.2-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?

◦ 0.417 kJ
◦ 0.571 kJ
◦ 5.71 × 102 kJ
◦ 2.63 × 104 kJ
◦ 2.40 kJ

Question 2

Consider the reaction:

2ClF3(g) + 2NH3(g) → N2(g) + 6HF(g) + Cl2(g)

When calculating the ΔH°rxn, why is the ΔHf° for N2 not important?


◦ Because nitrogen is in its standard elemental state and no energy is needed for this product to exist.
◦ Because any element or compound in the gaseous state requires a negligible amount of energy to exist.
◦ Because the products are not included when calculating ΔH°rxn.
◦ Because nitrogen is in its elemental state and does not contribute to the reaction itself.
◦ Two of these statements explain why N2is not important when calculating ΔH°rxn.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by asd123 on Mar 21, 2021

onowka

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 35% of students answer this correctly


asd123

  • Member
  • Posts: 557
Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

amcvicar

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

The patient is undergoing an allergy skin test by receiving subdermal inoculations of allergens. Inf The patient is undergoing an allergy skin test by receiving subdermal inoculations of allergens. Inf
In reaction 1, the formation of glucose 6-phosphate from glucose and inorganic phosphate In reaction 1, the formation of glucose 6-phosphate from glucose and inorganic phosphate
Glycine and alanine reaction Glycine and alanine reaction
Reaction mechansim for glyceraldehyde-3-phosphate dehydrogenase Reaction mechansim for glyceraldehyde-3-phosphate dehydrogenase
A phosphoribosyltransferase reaction A phosphoribosyltransferase reaction
Peptide bond formation between two amino acids, resulting from a dehydration reaction Peptide bond formation between two amino acids, resulting from a dehydration reaction
Video: Introduction to Cystic Fibrosis

For a complete list of videos, visit our video library