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
egoroff_w [7]
3 years ago
11

when copper sulfide is partially roasted in air (reaction with o2), copper sulfite is formed first. subsequently, upon heating,

the copper sulfite thermally decomposes to copper oxide and sulfur dioxide. Write balanced chemical equations for these two reactions
Chemistry
1 answer:
Lyrx [107]3 years ago
5 0

The question is incomplete, complete question is:

When copper(I) sulfide is partially roasted in air (reaction with oxygen), copper(I) sulfite is formed first. subsequently, upon heating, the copper sulfite thermally decomposes to copper(I) oxide and sulfur dioxide. Write balanced chemical equations for these two reactions.

Answer:

The balanced chemical equations for these two reactions:

2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)

Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)

Explanation:

On  partial roasting of copper sulfide in an air. The balanced chemical reaction is given as:

2Cu_2S(s)+3O_2(g)\rightarrow 2Cu_2SO_3(s)

On further heating of copper(I) sulfite it get decomposes into copper oxide and sulfur dioxide. The balanced chemical reaction is given as:

Cu_2SO_3(s)\overset{heat}\rightarrow Cu_2O(s)+SO_2(g)

You might be interested in
Isotopes ____________ the atomic mass of an element because they have a ____________ number of neutrons. a. disregard, constant
3241004551 [841]
Is B. The number of the atomic mass can increase or decrease because the number of neutrons is different.
7 0
3 years ago
What is the major cause of erosion and weathering that affects coastline features?
Arisa [49]

Answer:

Image result for What is the major cause of erosion and weathering that affects coastline features?

Coastal erosion, which is the wearing away of coastal land or beaches, is mainly caused by the impact of waves along the shoreline. This is accentuated during storms when waves are large and crash on shore with a lot of energy. ... As the sand and rocks crash into the coast, they grind away land and rock.

Explanation:

7 0
4 years ago
suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a s
Tanya [424]

Answer:

  • <u>0.6826 (68.26%)</u>

Explanation:

<u>1) Find the z-scores:</u>

  • z = [X - μ ] / σ

a) z-score for 22.6 inches length

  • X = 22.6
  • μ = 20
  • σ = 2.6

  • z = [ 22.6 - 20 ] / 2.6 = 1.00

b) z-score for 17.4 inches length

  • X = 17.4
  • μ = 20
  • σ = 2.6

  • z = [ 17.4 - 20 ] / 2.6 =  - 1.00

<u>2) Probability</u>

Then, you have to find the probability that the length of an infant is between - 1.00 and 1.00 standards deviations (σ) from the mean (μ).

That is a well known value of 68%, which is part of the 68-95-99.7 empirical rule.

The most exact result is obtained from tables and is 68.26%:

  • 1 - P (z ≥ 1.00) - P (z ≤ - 1.00) = 1 - 0.1587 - 0.1587 = 0.6826 = 68.26%
5 0
4 years ago
NEED HELP PLEASE ASAP
Elenna [48]

Answer:

Sugar aka Glucose

Explanation:

Cellular respiration is reverse photosynthesis! Using that knowledge we know that plants release oxygen and glucose (sugar) which is what is needed for cellular respiration to occur!

Hope this helped! Stay safe and good luck!

7 0
4 years ago
Which of the following transition is considered the phase<br> change from water to steam?
Alexandra [31]

Answer:

the transition from water to steam is call evaporation.

Explanation:

water evaporates or vaporizes and turns into steam this typically happens when heat meets with the water. an example would be if you boil water steam will release from the pot, or when it rains, snows, etc (precipitation) the water evaporates and the ground dries.

4 0
3 years ago
Other questions:
  • A star is born whenever nebula expands.. True or false?
    6·1 answer
  • How are pure crystalline substances characterized?
    13·1 answer
  • How are energy and mass connected during the formation of an atom?
    11·1 answer
  • How many atoms are there in 6.8 mole of boron
    12·2 answers
  • What is the percent composition of hydrogen in vinegar (CH3COOH)?​
    5·1 answer
  • Problem Page Question An analytical chemist weighs out of an unknown monoprotic acid into a volumetric flask and dilutes to the
    6·1 answer
  • Explain what a covalent bond is, what types of elements form covalent bonds and give an example of 2 elements that could bond co
    14·1 answer
  • Which of the following are soluble in water? Select all that apply.<br> K2SO4<br> CaCl2<br> LiOH
    14·1 answer
  • What would likely to happen if<br>the wind hit the mountain? Will it<br>change direction?​
    11·2 answers
  • A dodder plant wraps itself around a potato plant. The dodder then uses its root system to obtain water and nutrients from the p
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!