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
kondaur [170]
3 years ago
7

In a different experiment, the student uses a calorimeter which is perfectly insulated. She fills the calorimeter with 100.0 g o

f 25.00°C dilute HCl solution and adds 0.594 g Mg metal (24.3 g/mol). The final temperature of the apparatus comes to 41.83°C. Remember, the solution is made-up of the solute and the solvent. The specific heat for magnesium is negligible compared to the aqueous solution. What is the Molar Heat of Enthalpy for this reaction?
Chemistry
1 answer:
alexdok [17]3 years ago
8 0

Answer:

Explanation:

Mg + 2HCl = Mg Cl₂ + H₂

.594 g = .594 / 24.3

= .02444 mole

Heat evolved = msΔ T , m is mass of water ( solvant ) , s is specific heat of water , Δ T is rise in temperature

= 100 x 4.2 x ( 41.83 - 25 )

= 7068.6 J

.02444 mole  of Mg evolves 7068.6 J of heat

1 mole of Mg evolves 7068.6 /.02444 J

= 289222.6 J

= 289 kJ .

Molar heat enthalpy = 289 kJ .

You might be interested in
How many electrons elements are present in period 2 ?​
AVprozaik [17]
There are Eight elements
3 0
2 years ago
Read 2 more answers
In humans, infections by fungi and protists are usually more difficult to treat than bacteria infections. Suggest an explanation
Basile [38]
<span>Fungal diseases are difficult to treat mainly because they are eukaryotic organisms just like us humans, and therefore have less differences for drugs to target without harming the human body as well. Most antibiotics target e.g. the peptidoglycan layer in the bacterial (a prokaryote) cell wall, which is a safe target since eukaryotic cells do not have equivalent structures. Similarly many differences in metabolic pathways between humans and prokaryotes is often targeted by antibiotics, but metabolism of fungi and humans is much more uniform, and hence it is difficult to exclusively target the fungi only.

HOPE THIS HELPS!

</span>
5 0
3 years ago
Read 2 more answers
I need help with the first question what the answer?
Margaret [11]

Answer:

Density is 2.7 grams

Explanation:

formula for density is p= mass over volume [p being density]. So all you have to do is divide

8 0
3 years ago
I will give brainlyst for this so pls help
omeli [17]

Answer:

Answer -b

Explanation:

Brainliest pls

8 0
2 years ago
Read 2 more answers
In a particular redox reaction, Cr is oxidized to CrO42– and Cu2 is reduced to Cu . Complete and balance the equation for this r
Alisiya [41]
<span> Cr + Cu2+ = CrO42- + Cu+

</span>
8 0
3 years ago
Other questions:
  • The actual volume of the object was 34.1 mL. What is the percent error of his average result?
    8·1 answer
  • Plz help!<br><br> How is oxygen an element? Explain.
    13·1 answer
  • The water molecule H2O is polar because it contains two polar single bonds and A. its molecule has a linear shape. B. molecules
    11·2 answers
  • What is the difference between ester and ether
    12·1 answer
  • A gay cylinder what are the variables in gay-lussacs law
    11·2 answers
  • 14. If ExGxP=Hx) solve for A<br> A<br> В
    8·1 answer
  • A nursing home is installing their own bulk oxygen system due to their large volume of consumption. OSHA regulation 29 CFR 1910.
    5·1 answer
  • Pls help! 2CO + O2 → 2CO2
    11·2 answers
  • Your dad is working on creating a brick border for the lake in your backyard each brick has a mass of 100 g and a volume of 20 c
    12·2 answers
  • The chemical equation of photosynthesis includes 6o2. which best describes this substance?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!