Answer:
Atomic mass = mass of protons + mass of neutrons
Explanation:
In an element atomic mass of an atom can be calculated by adding the mass of protons and neutrons
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Answer:
A.The sound becomes louder.
And
C.The sound waves get further.
Explanation:
Louder the sound it will travel long.
The answer is 25 grams for this question
Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.