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
nikklg [1K]
3 years ago
10

I need help with Hess law

Chemistry
1 answer:
ICE Princess25 [194]3 years ago
6 0

Answer:

alright

Explanation:

Hess law is  the enthalpy change for a reaction that is carried out in a series of steps is equal to the sum of the enthalpy changes for the individual steps. Consistent with the law of conservation of energy. Starting and final conditions must be the same.

You might be interested in
When 4.5 mol al react with 11.5 mol hcl, what is the limiting reactant, and how many moles of h2 can be formed?
ahrayia [7]
1°/ . 2 Al + 6 HCl → 2 AlCl3 + 3 H2 

<span>k1 = n(Al) / 2 = 4,5 / 2 = 2,25 </span>
<span>k2 = n(HCl) / 6 = 11,5 / 6= 1,92 </span>

<span>k2 < k1 ==> HCl is the limiting reactant </span>

<span>6 mol of HCl ---> 2 mol of H2 </span>
<span>11,5 mol of HCl ---> 3,83 mol of H2 </span>
5 0
3 years ago
Porquê que o potássio é mais reativo que o cálcio? urgente!
saul85 [17]

Answer: O potássio possui apenas um elétron de valência. ... Considerando que o cálcio possui dois elétrons de valência, requer mais energia para a remoção de um elétron de valência. Devido a esse potássio, é mais reativo que o cálcio.

Explanation:

4 0
3 years ago
Where does the chemical energy to produce ATP come from
aleksandrvk [35]

Answer:

glucose

Explanation:

Chemical energy is stored in the bonds that hold the molecule together. ADP can be recycled into ATP when more energy becomes available. The energy to make ATP comes from glucose. Cells convert glucose to ATP in a process called cellular respiration.

7 0
2 years ago
Read 2 more answers
What is a state function?
fredd [130]
Is a function defined for a system relating several state variables or state quantities that depends only on the current equilibrium thermodynamic state of the system[1] (e.g. gas, liquid, solid, crystal, or emulsion), not the path which the system took to reach its present state. A state function describes the equilibrium state of a system, thus also describing the type of system. For example, a state function could describe an atom or molecule in a gaseous, liquid, or solid form; a heterogeneous or homogeneous mixture; and the amounts of energy required to create such systems or change them into a different equilibrium state.
3 0
3 years ago
The temperatures of the two glasses of water shown in the photograph above are 30°C and 0°C. Which of the following is a correct
maria [59]
D! the molecules of the warmer water would have a higher average kinetic energy :)
7 0
3 years ago
Other questions:
  • What particles do during phase changes
    10·1 answer
  • Air should be classified as:
    15·1 answer
  • Stable electron configurations are likely to contain ____.
    14·2 answers
  • Which describes funguslike protists? They are all autotrophs. They are all able to move at some point. Their pseudopods allow th
    6·1 answer
  • A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 19.78 nm. What is the total wi
    9·1 answer
  • How many atoms are present in 3 moles of chromium?
    10·2 answers
  • Climate change as we know it today is
    5·1 answer
  • What do electric forces do​
    15·1 answer
  • Difference between word equation and formula equation in table​
    5·1 answer
  • Cual de las opciones siguientes NO es una característica comun de una institución financiera
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!