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
Vinvika [58]
3 years ago
14

What is the mass number of the atom shown? a. 11 b. 18 d. 20 C. 19

Chemistry
2 answers:
PolarNik [594]3 years ago
6 0

Answer:

Explanation:it is 11

Anastasy [175]3 years ago
6 0
It is 20 because the mass is proton + neutron!!! hope this helped :)
You might be interested in
A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O is placed in a 1.0-L vessel at 300 K. The following equilibriu
tatyana61 [14]

Answer:

[H2] =    0.012 M

[N2] =    0.019 M

[H2O] =  0.057 M

Explanation:

The strategy here is to account for the species at equilibrium given that the concentration of [NO]=0.062M at equilibrium is known and the quantities initially present and its stoichiometry.

                  2NO(g)         +    2H2(g)    ⇒        N2(g)      +         2H2O(g)

i  mol            0.10                   0.050                                             0.10

c mol            -0.038                -0.038                +0019                +0.038                                                

e mol            0.062                 0.012                  00.019               0.057

Since the volume of the vessel is 1.0 L, the concentrations in molarity are:

[NO] =   0.062 M

[H2] =    0.012 M

[N2] =    0.019 M

[H2O] =  0.057 M

5 0
3 years ago
What is an oxidation state?
Oxana [17]

Answer:

Oxidation state shows the total number of electrons which have been removed from an element (a positive oxidation state) or added to an element (a negative oxidation state) to get to its present state

4 0
3 years ago
Which process was responsible for producing gases in the early atmosphere?
andre [41]

Answer: The early atmosphere

Explanation: Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence. The early atmosphere was probably mostly carbon dioxide, with little or no oxygen.

6 0
3 years ago
Read 2 more answers
The al alkaline earth metals have two railing electrons how does it form ions 1. Gain two electrons 2. Gain 6 electrons 3. They
S_A_V [24]
The correct response would be 3. The alkaline earth metals would tend to lose its valence electrons, in this case 2 of them at different energy levels, to form the same respective ion, which is +2.
5 0
3 years ago
Polyatomic ion formula for aluminum hydroxide
KonstantinChe [14]

Answer:

Al(OH)3 ? i hope this is what you mean.

7 0
3 years ago
Read 2 more answers
Other questions:
  • When work is done on an object, the amount of ________ it has changes.
    13·1 answer
  • How many significant figures in 11 soccer players
    14·1 answer
  • Which of the following suggests that a physical change has taken place in an ice cube
    6·1 answer
  • Stored energy due to position is know as blank energy
    13·1 answer
  • Which type of mutation involves adding dna bases?
    11·1 answer
  • Which statement below correctly describes the relationship between Q and K for both reactions? Are these reactions spontaneous a
    5·1 answer
  • When a solute is dissolved in water, the solution's boiling temperature _______ and the freezing temperature _______?
    10·1 answer
  • Please Help I will reward brainliest
    12·1 answer
  • How do covalent bonds form neutral compounds?
    9·1 answer
  • Write True If the statement Is Correct And False If Not​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!