<span>C) The number of neutrons present in the nucleus of each atom is 126 </span>
Answer:
Five Laboratory Safety Rules:
1). Do not eat in the laboratory.
2). Do not touch any chemical or reagent unless you are told to do so.
3). Neither play in lab, nor sit on the table.
4). Don't remove labels on any reagent.
5). Don't taste anything in the laboratory, no matter how familiar it appears.
Hope it helps.
Answer:
The answer is A.
Explanation:
Scientists repeat the same experiments because they wanna try to see if they keep getting the same result. When a scientific investigation is repeated, this is called replication. Replication is important in science so scientists can “check their work.” The result of an experiment is not likely to be well accepted unless the investigation is repeated many times and the same result is always obtained.
The correct answer is D.)
Electrons are negatively charged and the smallest subatomic particle.
Neutrons have no charge and weigh about the same as a proton.
Protons have a positive charge and weight about the same as a neutron.
Hope this helps!
Answer:
1.55 moles if i am correct.
