atomic mass=percentage of isotope a * mass of isotope a + percentage of isotope b * mass of isotope b+...+percentage of isotope n * mass of isotope n.
Data:
mass of isotope₁=267.8 u
percentage of isotope₁=90.3%
mass of isotope₂=270.9 u
percentage of isotope₂=9.7%
Therefore:
atomic mass=(0.903)(267.8 u)+(0.097)(270.9 u)=
=241.8234 u + 26.2773 u≈268.1 u
Answer: the mass atomic of this element would be 268.1 u
Carbon-14 is a radioactive isotope used to date organic material. Its consistent rate of decay allows the age of an object to be determined by the proportion of carbon-14 to other carbon isotopes. This process is called radiocarbon dating. Carbon-14 is also used as a radioactive tracer for medical tests.
It’s called an ion . An atom that loses electron is called an ion
Answer:
1. combustion
2. decomposition
3. decomposition
4. combination
5. decomposition
6. decomposition
Explanation:
combination of a reaction is when 2 more or elements/ compounds combine to form a compound. example: (A+B→AB)
decomposition of a reaction is when a chemical breakdown. example: (AB→A+B)
a combustion reaction is when an element/ compound reacts with oxygen to form the product of water and carbon dioxide.
example: ( 
+ 
→ 
O + 
)
