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
77julia77 [94]
3 years ago
13

Can someone pls summarise this for me cbb ILL BRAINLIST U!!:)

Chemistry
1 answer:
Novosadov [1.4K]3 years ago
7 0
Electrons in an atom are found on different electron shells depending on how much energy they possess, and they determine how atoms will interact with each other. The outermost electron shell holds the valance electrons.
You might be interested in
Bi2(CO3)3<br> Name of this compound
Keith_Richards [23]

Answer:

The name of this compound is :

Bi2(CO3)3 = Bismuth Carbonate

Explanation:

The name of the compound is derived from the name of the elements present  in it.

The rule followed while naming the compound are:

1. The first element (always the cation) is named as such .

2. The second element (The anion) end with "-ate ,  -ide ," etc

3. NO prefix is added while naming the first element.

For example : Bi2 can't be named as Dibismuth

Na2 = Can't be named as disodium

Hence the compound :

Bi2(CO3)3 contain two element : Bi and CO3. Here , Bi = cation (named as such) and CO3 = anion (named according to rules)

Bi = Bismuth

CO3 = carbonate

Bi2(CO3)3 = Bismuth Carbonate

The molecular mass of this compound is :

Molecular mass = 2 (mass of Bi) + 3(mass of C) + 6(mass of O)

= 2 (208.98)+3(12.01)+6(15.99)

= 597.987 u

5 0
3 years ago
Write the concentrated sulphuric acid H2C2O42H2O=2H2O+CO2+CO
masha68 [24]

Answer:

H2C2O4.2H20 → CO2 + CO + H2O

Explanation:

Oxalic acid crystals are nothing but dehydrated oxalic acid (H2C2O4 . 2H2O).

On heating, the water of crystallization is lost first. Then, the dehydrated oxalic acid decomposes into carbon dioxide(CO2), carbon monoxide(CO) and water(H2O).

Equations involved :

H2C2O4 . 2H2O → H2C2O4 + 2H2O

H2C2O4 → CO2 + HCOOH (FORMIC ACID)

HCOOH → CO + H2O

Overall equation : H2C2O4.2H20 → CO2 + CO + H2O

4 0
3 years ago
What is the answer ?
Blizzard [7]

Answer: 4. A solution in which methyl orange is red

Explanation:

The others solutions are in their basic form while methyl orange is in it’s acidic form when red.

7 0
3 years ago
Read 2 more answers
A student who was training for a cross-country race jogged for 1.0 hour and covered a distance of 1.5 kilometers. How much farth
densk [106]

Answer:

He would travel 3 kilometers.

Explanation:

Since he had already covered 1.5 kilometers in the time of 1 hour that means if he jogged for 1 more hour assuming he is going at the same pace he would've jogged 1.5 kilometers again and when you add that to the 1.5 kilometers he started with it would add up to 3 kilometers.

4 0
3 years ago
What could have caused the size of the moon jelly population to increase?
Ksivusya [100]

Answer:

The moon jelly population increased there were either more births or fewer deaths in the population than before. ... If there are more energy storage molecules available to the moon jellies, they can reproduce more, resulting in more births. Fewer deaths would also cause the jelly population to increase.

Explanation:

4 0
3 years ago
Other questions:
  • How much energy is required to raise the temperature of 3 kg of aluminum
    9·1 answer
  • When do th macroscopic properties become constant in an equilibrium system?
    9·1 answer
  • How many molecules of glucose are produced by each cycle of the light reaction?
    12·1 answer
  • Consider the reaction a + b c +
    9·1 answer
  • Fill in the blank spot.
    11·1 answer
  • 9. Which is a product of photosynthesis?
    14·1 answer
  • Lewis dot diagram for the Cs1+ ion
    14·1 answer
  • How does one calculate the pH of a solution? O A. The pH is the product of [H+] and [OH-]. O B. The pH is the negative log of [O
    7·1 answer
  • What is the main function of burette?
    8·2 answers
  • the magnitude of the heats of vaporization, fusion and sublimation of a substance reflect the quizlet
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!