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
Bezzdna [24]
2 years ago
6

Calculate the enthalpy for the reaction D + F = G + H using

Chemistry
1 answer:
Iteru [2.4K]2 years ago
5 0

The enthalpy for the reaction : ΔH = -132

<h3>Further explanation</h3>

Given

Reaction and the enthalpy

Required

the enthalpy

Solution

Hess Law

Reaction 1 reverse :

A + B = G + C  ΔH = -277

Reactions 2 and 3 remain the same (unchanged)

C + F = A         ΔH = 303

D = B + H         ΔH = -158

Add up all the reactions and remove the same compound from two different sides

D + F = G + H  ΔH = -132

You might be interested in
when 45 grams of copper (ii) carbonate are decomposed with heat how many grams of carbon dioxide will be produced
Maksim231197 [3]

Answer:

16.02 g

Explanation:

the balanced equation for the decomposition of CuCO₃ is as follows

CuCO₃ --> CuO + CO₂

molar ratio of CuCO₃ to CO₂ is 1:1

number of CuCO₃ moles decomposed - 45 g / 123.5 g/mol = 0.364 mol

according to the molar ratio

1 mol of CuCO₃ decomposes to form 1 mol of CO₂

therefore 0.364 mol of  CuCO₃ decomposes to form 0.364 mol of CO₂

number of CO₂ moles produced - 0.364 mol

therefore mass of CO₂ produced - 0.364 mol x 44 g/mol = 16.02 g

16.02 g of CO₂ produced

8 0
3 years ago
What is the correct name for the ionic compound, MgCl2?
algol [13]

Answer:

magnesium chloride (no prefixes)

8 0
3 years ago
Explain how a drought poses a threat to life and the biosphere. Use complete sentences.
Marina CMI [18]

Answer:

A drought poses a huge threat to all life. If a drought occurred the entire food chain would disintegrate within months. There would be no water for any animals or plants. Small mammals would not be able to eat plants, and reptiles would not be able to the small animals, and so on. A drought can destroy an ecosystem in a short amount of time.

Water is only being moved into the air through water vapor, so the air will become hotter than water. Land is also not moving in the atmosphere and absorbing heat like air is, so air will also be hotter than land, depending on what the land is made of.

Through precipitation, water in the atmosphere can return to the hydrosphere or percolate into the ground to become groundwater—part of the geosphere. ... Water in the biosphere can be released into the atmosphere through transpiration in plants, or respiration in animals.

Explanation:

6 0
3 years ago
Read 2 more answers
Now molecules:
MArishka [77]

Answer:

a

Explanation:

6 0
3 years ago
How do you do these?
Agata [3.3K]

Solve these problems like weighted averages:

The first one:

Multiply the masses (isotope numbers) by the decimal form of the percentage. Add them

0.076 (6) + 0.924 (7) = 6.924


The second one:

0.2 (10) + 0.8 (11) = 10.8


If you think about it, these answers make sense. 6.924 is much closer to 7 than to 6 (since there's a lot more lithium-7 than there is lithium-6). 10.8 is closer to 11 than to 10.


6 0
3 years ago
Other questions:
  • 10. What is the atmospheric pressure if the partial pressures of nitrogen, oxygen, and
    12·1 answer
  • 3% Hydrogen Peroxide has an oral LD50 of 900 mg/kg. Acetic Acid has an oral LD50 of 3310 mg/kg. Which one is more hazardous to c
    9·1 answer
  • A welder has 1.873 × 102 g Fe2O3 and 94.51 g Al in his welding kit. Which reactant will he run out of first?
    6·2 answers
  • Copper is used for electrical wirin g and cooking pans however iron is much more common on earth than copper why might copper be
    6·1 answer
  • Find the original concentration of a solution diluted from 15.00 mL to 125.0 mL with a final concentration of 0.00383 M
    14·1 answer
  • A metal with a mass of 71.68G occupies a volume of 8.00 cm to the power of 3. What's the calculation of the density of the metal
    9·1 answer
  • Is a glow stick Endothermic or exothermic ?
    5·1 answer
  • CAN SOMEONE PLEASEE HELPPP
    10·1 answer
  • Okay So Blink your eyes. Was work done? Explain your answer.
    8·2 answers
  • How can a short-term environmental change, such as a drought or a flood, affect organisms?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!