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
Goryan [66]
3 years ago
14

How many protons are in an element with an atomic number of 8 and a mass number of 18?

Chemistry
2 answers:
klasskru [66]3 years ago
8 0

Answer : The number of protons in an element are 8.

Explanation :

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

As we are given :

Atomic number of an element = 8

Mass number of an element = 18

Now we have to determine the number of protons for this element.

As, Atomic number = number of protons = number of electrons

So,

Atomic number = Number of protons = 8

Hence, the number of protons in an element are 8.

Natalija [7]3 years ago
4 0
The answer is 8. atomic number: the number of protons in the nucleus of an atom.
You might be interested in
Please help me with my 8th grade chemistry, I'm behind and don't understand it at all
padilas [110]

When a material is heated, the kinetic energy of that material increases and its atoms and molecules move about more. This means that each atom will take up more space due to its movement so the material will expand. ... Some metals expand more than others due to differences in the forces between the atoms / molecules.

7 0
3 years ago
Read 2 more answers
A reaction will only be spontaneous if the change in enthalpy is more negative than the product of −tδs is positive.
Len [333]
This is tue for many reasons help this works

7 0
3 years ago
Ethylenediamine is a bidentate ligand. The oxalate group, used in this experiment was also a didentate ligand. The structure of
Murljashka [212]

Answer:

Ethylene diamine will bond to the Central metal via a lone pairs of electrons on nitrogen

Explanation:

Complexes are formed by coordinate bond formation. Before a coordinate bond is formed, one of the species must have a lone lair of electrons available for donation into empty orbitals on the central metal.

Ethylene diammine contains nitrogen which has a lone pair of electrons. The two lone pairs on the two nitrogen atoms can bond with the central metal. This makes ethylene diammine a bidentate ligand (two bonding atoms).

5 0
3 years ago
(reply with the answer or get reported) Please help and thanks​
alexgriva [62]
1. C) 10
2. C) 2.33 mole
7 0
3 years ago
Give one example each for a binary compound and a ternary compound. (A ternary compound is one that contains three different ele
Sedbober [7]

Answer and Explanation:

BINARY COMPOUND: A binary compound is that compound which is made up of exactly two elements there are a lot binary compound present for example :H_2O, NaCl,NH_3,H_2S etc

TERNARY COMPOUND : A ternary compound is that compound which is made up of exactly three elements there are a lot binary compound present for example : Na_2SO_4,H_2SO_4,CH_3C00H  etc

7 0
3 years ago
Other questions:
  • Chemical energy is released when molecular bonds are formed.<br> True<br> False
    5·1 answer
  • Calculate how much 95% ethyl alcohol will be required to dissolve 0.1 g of sulfanilamide at 78 c using volume calculate how much
    12·1 answer
  • What is the tool to determine the relative size of things
    5·1 answer
  • use the heisenberg uncertainty principle to calculate the uncertainity in meters in the position of 0.68g and traveling at a vel
    9·1 answer
  • A solution is made by dissolving 0.611 mol of NaCl in 250 g of water. If the molar mass of NaCl is 58.44 g/mol, what is the mola
    10·2 answers
  • What is national flower of nepal?
    5·1 answer
  • Calculate the mass of 5.3 moles of chloric acid (hcl03)
    15·1 answer
  • 9. Triacylglycerols are
    9·1 answer
  • Name a property copper has?
    12·1 answer
  • What are the ways that energy<br> conversion can occur?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!