Answer: A student was trying to produce hydrogen gas. Figure 1 shows the apparatus she used. (a) No gas was produced. The student's teacher said that this was because the substances in the flask did not react.
Explanation:
Answer:
D, when there is a large antelope population
Explanation:
I took the k12 test and got it right
Answer:
1.01 V
Explanation:
From Nernst equation;
Ecell= E°cell- 0.0592/n log Q
Where;
Ecell= observed emf of the cell
E°cell= standard emf of the cell
n= number of moles of electrons transferred
Q= reaction quotient
Q= [Ag^+]^3/[MnO4^-] [H^+]^4
Q= [0.01]^3/[1.20] [1.50]^4
Q= 1.65×10^-7
Ecell= 0.88 - 0.0592/3 log 1.65×10^-7
Ecell= 0.88 - [0.0197×(-6.78)]
Ecell= 0.88 + 0.134
Ecell= 1.01 V
Answer:
Explanation:
In this case, we have to remember that relationship between the <u>avogadro's number</u> and the "mol" concept:
With this in mind, we can do the <u>first conversion</u>:
Now, if we calculate the molar mass of 
. <u>The atomic mass of O is 16 g/mol and the atomic mass of H is 1 g/mol</u>, so:
(16*1)+(1*2)= 18 g/mol
In other words, 
, so:
I hope it helps!
Answer:
Oa. Weathering breaks down rocks; deposition leaves them in new places.
Explanation:
Did test and got it right.
