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
Over [174]
3 years ago
14

Please help me please

Chemistry
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

20 is b and 21 is a.

Ludmilka [50]3 years ago
7 0

Answer:

b

Explanation:

i read this once and remember,trust me!

You might be interested in
What is Corona virus And explain breifly in​
stira [4]

Answer:

it is a viral disease . it is infected by one person to other .

7 0
3 years ago
When drawing the electron dot diagram, which element would have the greatest number of lone pair electrons?
valentina_108 [34]
Its D or A probably
5 0
2 years ago
PLZ HELP CHEMISTRY SUCKS BRO
uranmaximum [27]

Answer:

just click any of the buttons

6 0
3 years ago
Read 2 more answers
What experiments did Lavoisier do?
VikaD [51]
He did experiments with combustion and gas's
8 0
3 years ago
For which elements are outer electrons and valence electrons the same?
spin [16.1K]

Answer:

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.

Explanation:

4 0
3 years ago
Other questions:
  • Which ions are spectator ions in the formation of a precipitate of agcl via combining aqueous solutions of cocl2 and agno3?
    15·1 answer
  • 1. What Volume of HCl is generated if 3.44 g of Cl2 are reacted at STP? 2. What volume does 4.87 mol of Kr have at STP? 3. What
    7·1 answer
  • Hey I'm a newbie any help please with this
    13·1 answer
  • What type of protein penetrates to the interior of the plasma membrane but does not extend all the way through it?
    6·2 answers
  • Given the balanced equation representing a reaction:
    13·2 answers
  • Calculate the amount of heat required to convert 10.0 grams of ice at –20.°C to steam at 120.°C. (Sp. heat of H2O(s) = 2.09 J/g•
    8·1 answer
  • Liquid nitrogen becomes a gas when it is poured out of its container. The nitrogen is
    8·2 answers
  • PLZ HELP! An electron moved from a lower energy level to a higher energy level. What most likely happened during the transition?
    14·1 answer
  • Please please help please
    12·1 answer
  • When magnesium hydroxide reacts with nitric acid, it produces magnesium nitrate and water.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!