1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nasty-shy [4]
3 years ago
5

Measurements show that the enthalpy of a mixture of gaseous reactants increases by 243.kJ during a certain chemical reaction, wh

ich is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that −174.kJ of work is done on the mixture during the reaction. Calculate the change of energy of the gas mixture during the reaction in kJ.
Chemistry
1 answer:
Nadusha1986 [10]3 years ago
4 0

Answer: The change of energy of the gas mixture during the reaction in 69 kJ

Explanation:

According to first law of thermodynamics:

\Delta E=q+w

\Delta E=Change in internal energy

q = heat absorbed or released

w = work done or by the system

w = work done on the system

w = -174 kJ

q = +243 kJ   {Heat has increased so heat is absorbed}

\Delta E=-174kJ+(+243)kJ=69kJ

Thus the change of energy of the gas mixture during the reaction in kJ is 69

You might be interested in
Can u pls help me with this question ​
lorasvet [3.4K]

Answer:

b i im pretty sure or a

Explanation:

f y bib0f84f69g85

8 0
3 years ago
How many atoms are in 2.45 moles of hydrogen
allochka39001 [22]

Answer:

There are 1.4754246675000002e+24 atoms of Hydrogen within the measurement of 2.45 moles of hydrogen!

Explanation:

6 0
3 years ago
_A1Br3+_K=_KBr+_A1<br> fill in the correct coefficients.
Nataly_w [17]
1 A1Br3 + 3 K = 3 KBr + 1 A1
3 0
3 years ago
Compare the appearance and pH of the unfiltered and filtered polluted water. What conclusion can be made based on these observat
Goryan [66]

Answer:

The unfiltered polluted water is not clear and is yellowish in color. The filtered polluted water is clear with a little bit of yellow color. The pH readings are beyond the range in which organisms can grow. Based on these observations, I can conclude that even though water may look clean, it could actually not be clean or it can still be harmful to living things.

6 0
3 years ago
Read 2 more answers
The process by which DNA becomes mRNA occurs where within the cell?
creativ13 [48]

Answer: Transcription

In eukaryotic cells, transcription takes place in the nucleus. During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs.

Hope this helps!

-DizzyImDizzy

7 0
3 years ago
Other questions:
  • Kobe is testing whether 100 g of substance A, 100 g of substance B, or 100 g of substance C produces more oxygen in a chemical r
    9·2 answers
  • The formula for sulfuric acid is H2SO4. A mole of sulfuric acid would have a mass of ___ grams.
    7·1 answer
  • I’m stuck on this. Help ASAP
    8·1 answer
  • What are the products of this chemical equation? HCl(aq) + NaOH(aq) → NaCl(aq) + H2(g) + O2(g) NaH(aq) + Cl2(aq) + H2(g) + O2(g)
    11·2 answers
  • A certain substance X has a normal boiling point of 117.8°C and a molal boiling point elevation constant =Kb·0.63°C·kgmol−1. A s
    12·1 answer
  • The gradient of a displacement-time graph gives
    7·1 answer
  • How do scientists test their ideas
    8·2 answers
  • Our main source of energy is the sun. <br><br><br><br> True or False
    6·1 answer
  • What is the molar mass of CH20?
    13·1 answer
  • Correct way for calculating atomic mass
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!