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
Paha777 [63]
3 years ago
11

It all adds up worksheet

Chemistry
1 answer:
Komok [63]3 years ago
8 0
Atomic number and the number of protons are the same...
Neutrons = Mass number - number of protons
Electrons are same # unless there is a charge 
The whole number you see on the periodic table is the atomic number of the element which is also same as the number of protons

1) carbon - 14  ;  Mass number = 14 , Protons = 6 , Neutrons = 14 - 6 = 8 
                                Electrons = 6 

2) Lead - 208  ; Mass # = 208 , Protons = 82 , Neutrons = 208 - 82 = 126
                          Electrons = 82

3) Uranium - 239 ; Mass # = 239  , Protons  =  92,Neutrons = 239 - 92 = 147
                                 Electrons =  92

4) Uranium - 238  ; Mass # = 238 , Protons = 92 , Neutrons = 238 - 92 = 146
                                   
Electrons = 92 

5) Tin - 118  ; Mass # = 118 , Protons = 50 , Neutrons = 118 - 50 = 68
                         Electrons = 50
You might be interested in
What is an atom that has the same number of protons as other atoms of the same element, but has a different number of neutrons?
PSYCHO15rus [73]

Answer:

isotopes

Atoms with the same number of protons but different numbers of neutrons are called isotopes. Because the number of neutrons can vary for a given element, the mass numbers of different atoms of an element may also vary. For example, some helium atoms have three neutrons instead of two (these are called isotopes and are discussed in detail later on)

Explanation:

4 0
3 years ago
What is metaphase <br> HELEPWOAUSJSKQJDHEHR
IrinaVladis [17]

Answer:

the second stage of cell division. its between prophase and anaphase during the chromosomes become attached to spindle fibers.

5 0
3 years ago
What is the difference between theme and plot?
VladimirAG [237]

Answer:

should be D

Explanation:

3 0
3 years ago
Read 2 more answers
What gas law states that pressure and temperature are directly proportional at
Rus_ich [418]
Charles Law is the law that states pressure and temperature are directly proportional at constant volume and miles
8 0
3 years ago
Read 2 more answers
PLZ HELP THIS IS IMPORTANT!!
taurus [48]
A) Magnesium Chloride

Mg is the symbol of Magnesium and Cl is the symbol of chlorine ( but when Cl is a compound it will be Choride)
5 0
3 years ago
Other questions:
  • there are 2 protons that are 5 cm apart. each proton has the same Elementary charge. what is the charge of each Proton​
    6·1 answer
  • Not only does Snape need to teach his students about hydration states, but also naming hydrates. What is the correct formula for
    11·1 answer
  • If the natural abundance of Br−79 is 50.69 %, what is the natural abundance of Br−81?
    9·1 answer
  • Hno3(aq)+k2so3(aq)→ express your answer as a chemical equation. identify all of the phases in your answer.
    9·2 answers
  • Describe general characteristics of potassium
    14·1 answer
  • Please I really need help:
    12·2 answers
  • What is the wavelength, in nm, of radiation which has an energy if 3.371 x 10^-19 joules per photon?
    8·1 answer
  • The pKa of benzoic acid is 4.2. At pH 2.0, it will exist mainly as and occupy the layer. At pH 4.2, it will exist mainly as and
    12·1 answer
  • I need help with this science question ​
    6·1 answer
  • 1 mole of sulfur atoms has how much mass
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!