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
hjlf
3 years ago
14

How much heat is absorbed/released when 20.00 g of NH3(g) (17.0307g/mol) react in the presence of excess O2(g) to produce NO(g)

and H2O(l) according to the following chemical equation? 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l) ΔH° = 1168 kJ
Chemistry
1 answer:
irina1246 [14]3 years ago
8 0

Answer:

342.8 kJ are absorbed

Explanation:

In the reaction:

4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l) ΔH° = 1168 kJ

<em>As ΔH > 0, the heat is absorbed. Also, when 4 moles of NH3 are involved in the reaction, there are absorbed 1168 kJ</em>.

Having this in mind, moles of NH3 in 20.00g are:

20.00g × (1mol / 17.0307g) = <em>1.174 moles</em>

<em></em>

Thus, 1.174 moles of NH3 absorbed:

1.174 moles × (1168 kJ / 4 moles) = <em>342.8 kJ are absorbed</em>.

You might be interested in
The highest pressure ever produced in a laboratory setting was about 2.0 x 10 6 atm. If we have a
tigry1 [53]

Answer:

Volume = 72.7272

Explanation:

if only pressure and volume change, then we can do some simple math to find the answer.

2 x 10 ^ 6 times 1 x 10 ^-5 = 20

pressure and volume must equal 20

20 = 0.275 x volume

20 / 0.275 = new volume

I don't remember significant digits but your volume is 72.72727272 just repeated

8 0
3 years ago
Why would an atom emit particles or waves from its nucleus?
Neko [114]

Answer:

It’s A non of these

Explanation:

5 0
3 years ago
What is a problem commonly associated with nuclear power facilities?
gregori [183]
(1) False, lots of energy is actually produced from nuclear fuel, if we didn't get much then we probably wouldn't use it
(2) False, its burning coal that contributes to acid rain, since it contains sulfur
(3) False again, we can control the reaction with aptly named control rods, which are typically made of boron, to absorb some of the neutrons flying around in the chain reaction
(4) True, radioactive waste is very difficult to dispose of, and is also very dangerous. Sources of radiation can remain so for millions of years
5 0
3 years ago
What gas is measured in an ICE CORE and what is the correlation between that gas and temperature?
PSYCHO15rus [73]

Answer:

Explanation By looking at past concentrations of greenhouse gasses in layers in ice cores, scientists can calculate how modern amounts of carbon dioxide and methane compare to those of the past, and, essentially, compare past concentrations of greenhouse gasses to temperature. Ice coring has been around since the 1950s.n:

3 0
3 years ago
Read 2 more answers
How many grams of lithium sulfide (Li2S) are in 275 g of a 16 % aqueous solution of Li2S?
krok68 [10]

Answer:

600 mAh·g−1

Explanation:

i hope this is good let me know if its wrong

3 0
3 years ago
Other questions:
  • I give 10 points for 3 tasks + BRAINLIEST!!!!
    13·1 answer
  • Which of the following has the correct change in enthalpy and reaction description for the following reaction? NH3(g) + HCl(g) N
    9·2 answers
  • A company's managers ask, "Should we increase the size of our Bluetooth wireless speaker and sell it at a higher cost?" Never pr
    14·1 answer
  • Is food coloring dissolving in water a chemical change
    10·2 answers
  • A student mixed a small amount of iron filings and sulphur powder in a dish. He could not
    15·1 answer
  • In the compound 5Cr2O3 the 5 represents
    15·2 answers
  • Which atom attracts electrons most strongly? br F Rb
    6·2 answers
  • Answer the questions about the characteristics of the elements in group 1 (the alkali metals). What happens when the elements in
    7·1 answer
  • LAST QUESTION!!!! 50 POINTS!!! PLEASE ANSWER!!! &lt;3
    14·2 answers
  • Does somebody know the answer ?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!