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
Deffense [45]
2 years ago
10

Activity

Chemistry
1 answer:
lina2011 [118]2 years ago
8 0

Opinions are differ from facts as that we cannot change the facts but opinions can be changed as in first example it is given anthracite is better than bituminous coal may be there is another coal which is more better than anthracite. So here opinion is changed.

<h3>What is Coal ?</h3>

It is a black or brownish black sedimentary rock. It contains Sulphur, hydrogen, oxygen, carbon etc. It is always preferred as fuel. Coal was formed millions years ago when plant decay in the soil. It is obtained from dead vegetation. It is obtained from dead plants matter decay into peat and then it is converted into the coal by the process of heat.

<h3>What is Solar System ?</h3>

Solar System is made up of all the planets that revolve around our Sun. Solar System contains eight planets. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Thus from the above conclusion we can say that Opinions are differ from facts as that we cannot change the facts but opinions can be changed as in first example it is given anthracite is better than bituminous coal may be there is another coal which is more better than anthracite. So here opinion is changed.

Learn more about the Coal here: brainly.com/question/16607139

#SPJ1

You might be interested in
What products would form if chlorine gas was bubbled through a solution of sodium bromide?
Misha Larkins [42]
NaCl would form because it’s a single replacement reaction
4 0
3 years ago
What will be the end product for each electrode after electrolysis if the solution is concentrated aqueous sodium chloride ?​
Eddi Din [679]

Answer:

Cathode: Hydrogen gas

Anode: Chlorine gas

Explanation:

① Write down the ions present in the electrolyte

Cations: Na⁺, H⁺

Anions: Cl⁻ , OH⁻

② Decide which ions are preferentially discharged.

These are the factors:

For the discharge of cations,

- Reactivity series

(The lower the position of the cation in the reactivity series, the easier it is to be discharged)

For the discharge of anions,

- Concentration effect (look at this first)

(The more concentrated the ion, the easier for it to be discharged)

- If solution is not concentrated (dilute), look at the position of the anion on the electrochemical series.

(The lower the position of the anion on the electrochemical series, the easier of it to be discharged)

In this case:

For cations, H⁺ ions are selectively discharged at the cathode as its position is lower than Na⁺ in the reactivity series.

Anion: Cl⁻ ions, being more concentrated, are selectively discharged at the anode.

☆For electrolysis,

Cation at the cathode (-ve terminal)

Anion at the anode (+ve terminal)

In summary, here's what happened at each electrode:

<u>C</u><u>athode</u>

- H⁺ selectively discharged

- ionic half equation: 2H⁺ (aq) +2e⁻ → H₂ (g)

<u>Anode</u>

- Cl⁻ ions selectively discharged

- ionic half equation: 2Cl⁻ (aq) → Cl₂ (g) + 2e⁻

3 0
3 years ago
A chemistry student needs 55.0g of carbon tetrachloride for an experiment. by consulting the crc handbook of chemistry and physi
Monica [59]

The volume of a substance is simply the ratio of mass and density. Therefore:

volume = mass / density

 

Calculating for volume of Carbon Tetrachloride that the student has to pour out:

volume = 55.0 g / (1.59 g / cm^3)

<span>volume = 34.60 cm^3</span>

6 0
3 years ago
Material Conductor or Insulator foam insulator aluminum conductor wool insulator ? conductor Which material BEST completes the c
kirill115 [55]
Sorry but i can not decide i think it is B or C

5 0
3 years ago
How many atoms of oxygen in 4 molecules of HNO3?
MrRissso [65]

Answer:

12 oxygen atoms are in 4 molecules of HNO3?

Explanation:

the amounts of atoms of all the component in HNO3, which are 1 atom of Hydrogen, 1 atom of Nitrogen and 3 atoms of Oxygen.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Helppppppp is due for tomorrow
    15·2 answers
  • When conducting an experiment which is the best way to record data
    7·1 answer
  • How many moles of magnesium ions are present in 283.8 mL of<br> 6.74 M Mg3(PO4)2?
    14·1 answer
  • A d d m y s n a p gianavaughn007 ;)
    9·2 answers
  • Consider the reaction 2 H 2 + O 2 ⟶ 2 H 2 O Δ H rxn = − 484 kJ Which answer best describes the transfer of heat that occurs when
    8·1 answer
  • Which of the following has the shortest half life?
    15·1 answer
  • Please Help Me!!
    8·2 answers
  • How do you separate a mixture of sodium chloride and potassium trioxonitrateV<br>​
    12·1 answer
  • What is the smallest unit found in a bar of gold. A. atom. B. Cell. C. Element. .D Nucleus PLEASE HELP
    9·1 answer
  • What are the properties of PLA plastic PLEASE HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!