Answer:
Nitrogen
Explanation:
Nitrogen present 78% in the earth's atmosphere
Explanation:
Gravitational potential energy
= mgh = (45kg)(9.81N/kg)(2m) = 882J.
For this case, we must take into account the following conversion factors:
Therefore, by applying the conversion factors we have:
For cubic centimeters:
For liters:
Answer:
941 milliliters is the same as:
Answer:
0.48 moles
Explanation:
The bromide has a molarity of 2.6M.
This simply means that in 1dm^3 or 1000cm^3 of the solution, there are 2.6 moles.
Now, we need to get the number of moles in 185ml of the bromide. It is important to note that the measurement ml is the same as cm^3.
We calculate the number of moles as follows.
If 2.6mol is present in 1000ml
x mol will be present in 185 ml.
To calculate x = (185 * 2.6) ÷ 1000
= 0.481 moles = 0.48 moles to 2 s.f
Answer:
1.42m/s
Explanation:
velocity=displacement/time
v=50/35=1.42m/s
