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
nydimaria [60]
3 years ago
13

___au2s3 ___h2 → ___au ___h2s

Chemistry
1 answer:
liberstina [14]3 years ago
7 0
The best way to balance an equation is to balance one atom at a time.
You start with two Au atoms on the left, so you know the coefficient of Au on the right has to be 2. So at first we get,
Au2S3 + H2 --> 2Au + H2S
Then, notice you have 3 sulfur atoms on the left, so you need three on the right.
Our equation becomes
Au2S3 + H2 --> 2Au + 3H2S
Lastly, we now have six hydrogen atoms on the right, and only two on the left, so we assign a three to the H2 on the left
Au2S3 + 3H2 --> 2Au + 3H2S Is the balanced final equation.

You might be interested in
For the reaction 2NH3(g) + 2O2(g)N2O(g) + 3H2O(l) H° = -683.1 kJ and S° = -365.6 J/K The standard free energy change for the rea
BlackZzzverrR [31]

Answer:

\Delta G^{0} = -457.9 kJ and reaction is product favored.

Explanation:

The given reaction is associated with 2 moles of NH_{3}

Standard free energy change of the reaction (\Delta G^{0}) is given as:

           \Delta G^{0}=\Delta H^{0}-T\Delta S^{0}   , where T represents temperature in kelvin scale

So, \Delta G^{0}=(-683.1\times 10^{3})J-(273K\times -365.6J/K)=-583291.2J

So, for the reaction of 1.57 moles of NH_{3}, \Delta G^{0}=(\frac{1.57}{2})\times -583291.2J=-457883.592J=-457.9kJ

As, \Delta G^{0} is negative therefore reaction is product favored under standard condition.

6 0
3 years ago
How many moles of salt are in 13.8 g of sodium chloride?
Hoochie [10]

Answer: 0.24 moles

Explanation:

Molecular Mass of NaCl (23 + 35.5) = 58.5g

58.5g of Sodium Chloride -------> 1 mole of NaCl

∴ 13.8g of Sodium Chloride  ------>  1 ÷58.5 x  13.8 = 0.2358974  ≈    0.24moles

                                                         -  

3 0
3 years ago
Read 2 more answers
Two parent reproduction involves cell division that includes ___________? *
Anettt [7]

Answer:

Mitosis

Explanation:

3 0
2 years ago
There are 3 naturally occurring isotopes of hydrogen and 2
DedPeter [7]

Answer:

True

Explanation:

Hydrogen has three naturally occuring isotopes and copper has two.

3 0
3 years ago
What can be said about an endothermic reaction with a negative entropy change?
zvonat [6]
The statement is false because endothermic reactions have a positive enthalpy change, because heat is being added to the system because it requires more energy to react
6 0
3 years ago
Other questions:
  • How have safety concerns about chemicals changed over time?
    10·1 answer
  • Choose the more sensible temperature. Cold day: 20 degrees Celsius or -20 degrees Celsius
    8·1 answer
  • How many atoms of Oxygen (O) are there in the products of the following equation:
    6·1 answer
  • Hydrogen gas can combine with oxygen gas under certain conditions to form water. Which name is a general term for water in this
    9·1 answer
  • The following chemical equation is unbalanced. When the equation is balanced, what is the coefficient for pure calcium (Ca)? A.
    9·2 answers
  • PLEASE ANSWER ALL
    8·1 answer
  • Distance 100 miles. Time is 2 hours. What was the avg speed in miles per hour and miles per minute.
    14·1 answer
  • what happens when the gas produced by heating chloroform with silver powder is passed into Ammoniacal silver nitrate solution​
    9·2 answers
  • Which of the following is always a reactant in a combustion reaction? (5 points)
    10·1 answer
  • When servers or sellers break state, county, or municipal alcohol laws when serving or selling alcohol, the server or seller
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!