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
viva [34]
4 years ago
14

How do I calculate the standard enthalpy change for the following reaction at 25 °C ?

Chemistry
1 answer:
ladessa [460]4 years ago
4 0
MgCl2(s) + H2O(l) → MgO(s) + 2 HCl(g) 

Using the standard enthalpies of formation given in the source below: 

(−601.24 kJ) + (2 x −92.30 kJ) − (−641.8 kJ) − (−285.8 kJ) = +141.76 kJ 
So: 

MgCl2(s) + H2O(l) → MgO(s) + 2 HCl(g), ΔH = +141.76 kJ
You might be interested in
What are to long term impacts that the concept of matter cannot be destroyed or created
Tcecarenko [31]
As long as matter cannot be destroyed or created , nothing can be gained or lost.

there is zero impact and hence one cannot numerate the impact
8 0
3 years ago
True or false when matter changes it’s state it is a physical change because it is the same substance the whole time.
Blababa [14]

Answer:

true

Explanation:

5 0
3 years ago
Identify one natural process that may cause sudden climate changes.
Vesnalui [34]

Answer:

Global Warming , Volcanic Eruption

3 0
3 years ago
Are you my mother? Please answer me...
erastovalidia [21]
No sorry because i'm only 12 years old so no

7 0
3 years ago
Read 2 more answers
What is homologous series . Write it's characteristics
Anni [7]

Answer:

Homologous series is defined as a systematic order of structurally similar organic compound containing same functional group in their family and two adjacent members differ in their molecular formula by -CH2 unit.

Characteristics:

1.Various members of homologous series contain same functional group.

2.Various members of homologous series can be represented by common formula.

3. All members of a homologous series have almost similar chemical properties.

4. All members have common method of preparation.

5.Two successive members of homologous series have different chain length or difference in their molecular formula by -CH2 unit.

6.The members of homologous series show different physical properties.

4 0
3 years ago
Other questions:
  • Please help me i dont understand this!
    11·1 answer
  • QUESTION 8
    12·2 answers
  • Calculate the density of a substance that has a mass of 200 g and volume of 228 ml​
    8·1 answer
  • What mass of copper is produced when zinc is added to a solution containing 31.9g copper ii tetraoxosulphate vi
    8·1 answer
  • What are the products in this chemical reaction? 2H3PO4+3Ca(OH)2→Ca3(PO4)2+6H2O
    8·2 answers
  • What is an example of conduction, raditaon convection
    14·1 answer
  • 2) A balloon was inflated to a volume of 5.0 liters at a temperature of
    5·1 answer
  • Calculate the volune, in liters, of 4 mol H2S at 60 degrees celsius and 200 KPa? Show your work 40 pts
    11·1 answer
  • How many molecules are in 9.40 moles of AICI3?
    8·1 answer
  • you are working in an office of a precious metal buyer and miner bring a nugget of metal and he claims its cold you suspect that
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!