Eric Wu cannot take his pictures on any night because as the Moon orbits the sun different angles of the illuminated half of the Moon is being shown as the days go on. So on some nights the areas of the Moon that Eric Wu wants to take pictures of may not be shown on the Moon because the area is not facing earth.
The answer for the following problem is mentioned below.
- <em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
- <em><u>Therefore the option is "D" (12.8 moles)</u></em>
Explanation:
Given:
Initial moles () = 7.51 moles
Initial volume () = 8.15 L
Final volume () = 13.9 L
To find:
Final moles of the gas
We know;
From the ideal gas equation;
P × V = n × R × T
where;
P represents the pressure of the gas
V represents the volume of the gas
n represents the no of moles of the gas
R represents the universal gas constant
T represents the temperature of the gas
we know;
from the above mentioned equation,
V ∝ n
So,
=
where,
represents the initial volume
represents the final volume
represents the initial moles
represents the final moles
So,
=
= 12.8 moles
<em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
To determine the mass of the sample, first find the volume difference after and before the aluminum was placed, the volume change is equal to the volume of the submerged object, in this case aluminum.
Then knowing volume of aluminum and the density of it, we can solve for the mass.
D = m/v
Dv = m
2.7 g/ml • 8 ml = 21.6 grams.
Answer:
The equivalent circuit for the electrode while the electrolyte gel is fresh
From the uploaded diagram the part A is the electrolyte, the part part B is the electrolyte gel when is fresh and the part C is the surface of the skin
Now as the electrolyte gel start to dry out the resistance of the gel begins to increase and this starts to limit the flow of current . Now when the gel is then completely dried out the resistance of the gel then increases to infinity and this in turn cut off flow of current.
The diagram illustrating this is shown on the second uploaded image
Explanation:
Answer:
Q1: A
Q2: B
Explanation:
Q1: the independent variable will always go on the x axis and the dependent will always go on the y-axis, so the answer is A.
Q2: it's not a, it's not d (ocean droughts aren't a thing that I'm aware of), and hurricanes don't make water scarce, so I would go with B.