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
inn [45]
3 years ago
8

An atom has 13 protons and 14 neutrons. what is its mass number?

Chemistry
1 answer:
Artemon [7]3 years ago
5 0

27 is its mass number

You might be interested in
Metals react with oxygen to give oxides with the general formula MxOy. What is a balanced chemical equation for the reaction of
katovenus [111]

Answer: 4Fe+3O_2\rightarrow 2Fe_2O_3

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here iron is having an oxidation state of +3 called as Fe^{3+} cation and oxide O^{2-} is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral Fe_2O_3.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

2Fe+3O_2\rightarrow 2Fe_2O_3

8 0
3 years ago
Read 2 more answers
...............………...mkmlkml;m
bagirrra123 [75]

Answer:

390

Explanation:

Specific heat capacity= heat/mass × temperature

x = 2925 \div 0.5 \times 15 = 390

Remember you convert gram into kilogram and 1 gram =0.001 kilogram

5 0
3 years ago
How many neutrons does a atom of cobalt have?
OverLord2011 [107]

Did you mean the atomic mass?


4 0
3 years ago
Order the density of the layers of the Earth from lowest density to highest
tatiyna

Answer:

the first is the inner core second is outer core third oceanic cruat fourth contenental crust fifth asthenosphere

3 0
3 years ago
What is the formula for hydrogen-hydrogen?
kupik [55]
The formula for hydrogen-hydrogen is H-H
4 0
3 years ago
Other questions:
  • Help please I need the answer
    8·1 answer
  • The equation, H2SO4 (aq) + Sr(OH)2 (aq) arrow SrSO4 (aq) + H2O (l), represents what?
    6·2 answers
  • cliff hanger smokes 1 pack of cigarettes per day. How many cigarettes will be smoke in 7 years of smoking at that rate? (1 pack
    10·2 answers
  • What type of reaction is created by starting a fire by igniting gasoline?
    15·2 answers
  • Scientists have speculated that element 126 might have a moderate stability allowing it to be synthesized and characterized. Pre
    12·1 answer
  • Help me answer this please
    15·1 answer
  • Calculate the volume of oxygen at NTP obtained by decomposing 12.26g of KCLO3(at wt. K=39.1, Cl=35.5 and O = 16)​
    12·1 answer
  • Please help...<br> CaS cation and anion<br> ZnCl2 cation and anion<br> Cu2CrO4 cation and anion
    7·1 answer
  • What is the isomers for C6H3(ch3)2cl?
    9·1 answer
  • One of the basic building blocks of matter, which cannot be broken down by chemical means is a(n)______ , of which there are 92
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!