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 a gas that does not react with other elements ,it glows when it is heated in a lamp or a vacuum tube, what is this eleme
pav-90 [236]
Are there any like A. B.C. D. answers?
7 0
3 years ago
Burning your hand when accidentally touching a hot plate is an example of which heat transfer? a.Conduction b.Convection c.Radia
aniked [119]

Answer by YourHope:


Hi! :)


Question: Burning your hand when accidentally touching a hot plate is an example of which heat transfer?


Answer: A) Conduction!


Question: Compare and contrast Conduction and Convection. Which is true?


Answer: C) Convection can only transfer heat through fluids, but Conduction can transfer heat through solids and fluids!


Have a BEAUTIFUL day~

7 0
3 years ago
Read 2 more answers
Which action would shift this reaction away from solid calcium fluoride and toward the dissolved ions?a) adding calcium ionsb) a
Mila [183]

Answer:

c) removing fluoride ions.

Explanation:

Hello!

In this case, for this solubility product problem, it is very convenient to write the undergoing ionization reaction:

CaF_2(s)\rightleftharpoons Ca^{2+}(aq)+2F^-(aq)

In such a way, via the Le Chatelier's principle, we remember that the addition of reactants shifts the reaction towards products, adding products shifts the reaction towards reactants, removing reactants shifts the reaction towards reactants and removing products shifts the reaction towards products. In means, that the best way to shift this reaction away from solid calcium fluoride and toward the dissolved ions is c) removing fluoride ions, because it is a product and its removal favors the formation of more products.

Best regards!

8 0
3 years ago
How does matter and energy cycle through an ecosystem?
Ainat [17]
A Cellular respiration alone
Your welcome
6 0
3 years ago
How to calculate atomic mass of sodium ?(in process)​
Vinvika [58]

Answer:

Atomic mass of Sodium is 22.9897 u. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The unit of measure for mass is the atomic mass unit (amu). One atomic mass unit is equal to 1.66 x 10 -24 grams.

Explanation:

7 0
3 years ago
Other questions:
  • What is the outcome of all chemical changes when two substances are combined?​
    8·1 answer
  • A 500 mL sample of a 0.100 M formate buffer, pH 3.75, is treated with 5 mL of 1.00 M KOH. What is the pH following this addition
    15·1 answer
  • Explain how original mass of dry ice compares with the mass of carbon dioxide gas?
    15·1 answer
  • What is a bone charcoal
    9·1 answer
  • Determine the element of lowest atomic number that contains a complete d subshell in the ground state. element symbol:
    11·2 answers
  • The mole fraction of a non electrolyte (MM 101.1 g/mol) in an aqueous solution is 0.0194. The solution's density is 1.0627 g/mL.
    7·1 answer
  • ITS A TEST PLS HURRY!!!​
    15·1 answer
  • I need to know what the matter is of a tree
    6·1 answer
  • g line a) The emission line with the shortest wavelength. b) The absorption line with the shortest wavelength. c) The emission l
    7·1 answer
  • What might happen to the cryosphere if the insulating effect of the atmosphere increased?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!