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
Fynjy0 [20]
2 years ago
14

Will make brainliest

Chemistry
1 answer:
Dafna11 [192]2 years ago
8 0

Answer:

Boron

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

For example

In given atomic model we can see that there are five electrons out side the nucleus it means this atomic model is of that element which have atomic number 5 and it is boron.

It has 5 electron 5 proton and 6 neutrons.

It means its atomic number is five and mass number is 5+6 = 11

You might be interested in
In a sulphuric acid (h2so4) - sodium hydroxide (naoh) acid-base titration, 17.3 ml of 0.126 m naoh is needed to neutralize 25 ml
katen-ka-za [31]
The balanced equation for the neutralisation reaction is as follows
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
stoichiometry of NaOH to H₂SO₄ is 2:1
the number of moles of NaOH reacted  - 0.126 mol/L  x 0.0173 L = 0.00218 mol
if 2 mol of NaOH reacts with 1 mol of H₂SO₄ 
then 0.00218 mol of NaOH reacts with - 0.00218 / 2 = 0.00109 mol of H₂SO₄ 
molarity is the number of moles of solute in 1 L solution
therefore if 25 mL contains - 0.00109 mol 
then 1000 mL contains - 0.00109 mol / 25 mL  x 1000 mL = 0.0436 mol/L
therefore molarity of H₂SO₄ is 0.0436 M
4 0
3 years ago
The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by which balanced chemical equation?
Bumek [7]
 The correct answer is:  [B]:  
___________________________________________________________
                     "  N₂ (g) + 3 H₂ (g) → 2 NH₃ <span>(g)  "    .
___________________________________________________________
Note of interest:
___________________________________________________________
This particular reaction is known as the "</span>Haber process" .
___________________________________________________________
7 0
3 years ago
Read 2 more answers
Part D
qwelly [4]

Answer:

Explanation:

The  number  on the top  right  of  the  symbol shows  ATOMIC NUMBER , if it is written alone only one digit or number overall .

And if the  number is also in bottom left then bottom left number will be ATOMIC NUMBER and top right will be MASS NUMBER

Hope  this will help you *-*

7 0
3 years ago
Which of the following is considered an alternative energy resource?
ELEN [110]
B. Biomass

(I guess so cause other ones are already being used)
4 0
3 years ago
How many grams of mg are in 534g of mgo<br> ​
Kitty [74]

Answer:

0.534mg..

....

...

..

...

.

....

7 0
2 years ago
Other questions:
  • The nickel(II) ion is commonly dissolved in solution using nickel(II) nitrate hexahydrate, Ni(NO3)2.6H2O. The nickel(II) ion pre
    5·1 answer
  • Why does it seem to us as if rocks remain the same and don't change
    11·1 answer
  • Sodium carbonate is a reagent that may be used to standardize acids. In such a standardization it was found that a 0.498-g sampl
    5·1 answer
  • Match the following words.
    9·1 answer
  • -What important role does chemistry play in society?
    6·1 answer
  • Need help ASAP plzzzzzz​
    10·1 answer
  • Kinematics equations are used only by physicists and people who work in
    12·2 answers
  • Help me!<br>I need some quick answers pls​
    7·1 answer
  • All participants in the Genius dog challenge are border collies which some experts think are the what breed of dog?
    6·1 answer
  • How many carbon monoxide molecules are in 0.75 moles of carbon monoxide?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!