Answer: Polonium (Po), Silicon (Si), Antimony(Sb)
Explanation: Metalloids are the elements which exhibits some properties of both metals and non-metals. They are generally called as semi-metal. There are in total 7 metalloids in whole periodic table. They are:
Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Telurium (Te) and Polonium (Po).
From, the list and periodic table attached, it is visible that only Silicon, Polonium and antimony are the metalloids from the elements given.
Answer:
is the value of the rate constant.
Explanation:
Let the order of the reaction be x.
The rate law of the reaction can be written as:
1. Rate of the reaction when concentration changes from 0.882 M to 0.697 M in 0 seconds to 60 seconds.
..[1]
2. Rate of the reaction when concentration changes from 0.697 M to 0.566 M in 240 seconds to 360 seconds.
..[2]
[1] ÷ [2]
Solving fro x:
x = 0.92 ≈ 1
is the value of the rate constant.