The mass number of an atom is the number of
2 answers:
Answer:
protons plus neutrons
Explanation:
jsut the definition
Answer:
protons
Explanation:
the sum of the numbers of protons and neutrons present in the nucleus of an atom
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Yes hydrogen is a non metal
Answer:
this doesnt make sence ezxplain the subject
Explanation:
Answer:
Oxygren co2 and nitrogen
Explanation:
Your answer is B.
Because it says that that carbon burns in presence of oxygen (C+O) which is equal ( => ) to Carbon Dioxide (

)