Answer:
He discovered neutrons in 1932
Answer:
Element
Explanation:
Two of the same element may have differing numbers of neutrons, however, when it comes to protons, two of the same element will always have the same number of protons. Two different elements may have the same neutrons, but never protons.
Answer: The missing coefficient is 2.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
As in the products, there are 2 atoms of sodium, thus there will be 2 atoms of of sodium in the reactant as well. This will balance the number of hydrogen and oxygen atoms as well.
Thus the missing coefficient is 2.
An error in estimation could arise owing to;
1) Inaccurate measurement of the volumes of the solutions
2) When the reaction vessels are not properly cleaned
<h3>What is error in an experiment?</h3>
Error could occur in an experiment when values are misread. The error could be random error or a systematic error.
The major ways in which an error can occur in the estimation of concentration of acetic acid in the vinegar are;
1) Inaccurate measurement of the volumes of the solutions
2) When the reaction vessels are not properly cleaned
Learn more about errors in experiment:brainly.com/question/14149934
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