Answer:
13414 years
Explanation:
From;
0.693/ t1/2 = 2.303/t log No/N
t1/2 = half life of C-14
t = age of the sample
No= initial amount of C-14
N = present amount of C-14
From the question, N = 0.2 No
Hence;
0.693/5700 = 2.303/t log No/0.2No
1.2 * 10^-4 = 2.303/t log 1/0.2
1.2 * 10^-4 = 1.6097/t
t = 1.6097/1.2 * 10^-4
t = 13414 years
Answer:
electrons get transfered from metals to non metals in the formation of ionic bond.
metals have the tendency to lose electrons whereas non metals tend to stabilize by gaining electrons.
Answer:
820.864 g
Explanation:
1) The atomic mass of sulfur (found from the periodic table) is 32.065 amu. Use this mass to find the molar mass of Sulfur. Sulfur is S8 so the molar mass of sulfur is:
8 × 32.065 = 256.52 g/mol
2) To find the mass use the formula:
m = n × M where <em>m</em><em> </em>is the mass, <em>n</em><em> </em>is the number of moles, and <em>M</em><em> </em>is the molar mass.
3)
The number of electrons in an atom of an element being always the same
as the number of protons in its nucleus is False.
<h3>What is an Electron?</h3>
This is a sub-atomic particle which is negatively charged and is usually
involved in chemical reactions.
Electropositive elements donates electrons while electronegative
elements accepts electrons during chemical reactions which is why the
number of proton and electron aren't always the same.
Read more about Electrons here brainly.com/question/900457
