Element X has 2 following stable isotopes, X-23 (relative abundance 41.9%) and X-25 (relative abundance is [100-41.9]%). What is the average atomic mass of Element X? Record the numerical answer to the hundredths place (2 places after the decimal).
1 answer:
<h3>Further explanation</h3>
Isotopes : the same atomic number, but different mass numbers
Atomic mass is the average atomic mass of all its isotopes
avg atomic mass = m1.%m1 + m2.%m2....mn.%mn
You did not include the mass of each isotope
Element X :
X-23 = 41.9%
X-25 = 58.1%
The average atomic mass of Element X :
You might be interested in
When food burns, energy is lost. When food is consumed by the body, it is broken down into simple sugars, carbohydrates, and fats. (Energy gained)
Answer:
clo3 lewis structure
Explanation:
There is no molecule or ion as ClO3. The correct formula of chlorate ion is ClO3-.
Answer:
A mixture of gases at 760 mm pressure contains 65% nitrogen 15% oxygen and 20% carbon dioxide by volume What is partial pressure of each in mm ? . ∴P′CO2=760×20100=152mm .
Answer:
the answer is a I think
Explanation:
Change in size because that just means that more is added rather than anything reacting