Answer:
0.165
Explanation:
Feel free to let me know if this is wrong because I have seen the question before but cannot really remember!
Antimony Sb
Explanation:
The element that will have similar chemical properties with Arsenic As is element Antimony or Sb.
An element is a distinct substance that cannot be split-up into simpler substances. They are made up of only one kind of atom.
- The chemical properties of an element is determined mostly by the number of electrons in its outermost shell.
- This is called the valency of an element.
- Element having the same valency behaves the same way chemically.
- They exchange the same number of electrons during chemical reaction.
Therefore, elements in the same group on the periodic table have the same chemical properties.
Elements in the same group have the same valency.
Anitmony and Arsenic belongs to group 5 on the periodic table. The elements in this group are Phosphorus, Arsenic, Antimony and Bismuth.
learn more:
Chemical properties brainly.com/question/2376134
#learnwithBrainly
I believe it has something to do with the H2O molecules, because a chemical compound is not a mixture.
Be, Mg, Ca increasing first ionization energy
Answer:
[(x-37.5)/x]*100%
62.5% (assuming the original sample weighs 100.0g)
Explanation:
Let's say that the original sample is x
Mass of I-125 which has decayed: x-37.5
Percentage of decayed mass: [(x-37.5)/x]*100%
Please recheck, for this may not be the correct answer
