Answer:
PLEASE MARK AS BRAINLIEST!!
Explanation:
Calcium has an atomic number of 20 and an atomic mass of 40
The mass number of an isotope is the sum of the number of protons and neutrons in the atomic nucleus. The atomic number is the number of protons. The calcium-40 isotope has a mass number of 40 , and an atomic number of 20 , therefore it has 20 protons.
Answer:
B. Matter is composed of very small particles.
Explanation:
All matter is composed of extremely small particles called atoms. All atoms of a given element are identical in size, mass,
The formula of determining the
value is:

where both the distance are measured from the common origin.
10 % ethyl acetate/ hexane means it has 10 % ethyl acetate and 90 % hexane which are non-polar in nature. Hence, the non-polar compound will travel farther in the TLC plate along with the eluent and the polar compound will travel less as they remain attracted to the polar adsorbent
.
Among 3-decanone and 3-decanol, 3-decanone will have high
as it is non-polar.
Among toluene and benzoic acid, toluene will have high
as it is non-polar.
Among cyclooctane and cyclooctanone, cyclooctane will have high
as it is non-polar.
(3) nuclear fission
Hope I helped!