OK, so to answer this question, you will simply use the molality equation which is as follows:
<span>M1V1 = M2V2
In the givens you have:
M1 = 2M
V1 is the unknown
M2 = 0.4M
V2 = 100 ml
</span>plug in the givens in the above equation:
<span>2 x V1 = 0.4 x 100
</span>therefore:
V1 = 20 ml
Based on this: you should take 20 ml of the 2 M solution and make volume exactly 100 ml in a volumetric flask by diluting in water.
Answer:
4.20 moles NF₃
Explanation:
To convert between moles of N₂ and NF₃, you need to use the mole-to-mole ratio from the balanced equation. This ratio consists of the coefficients of both molecules from the balanced equation. The molecule you are converting from (N₂) should be in the denominator of the ratio because this allows for the cancellation of units. The final answer should have 3 sig figs because the given value (2.10 moles) has 3 sig figs.
1 N₂ + 3 F₂ ---> 2 NF₃
2.10 moles N₂ 2 moles NF₃
--------------------- x --------------------- = 4.20 moles NF₃
1 mole N₂
Answer:
Explanation:
Any genetically based physiological, behavioral, or ecological trait that enables an organism to cope with, and to survive and reproduce in, its environment represents an adaptation.
Qualquer traço fisiológico, comportamental ou ecológico de base genética que permite a um organismo enfrentar, sobreviver e se reproduzir em seu ambiente representa uma adaptação.
Water. The energy from the fission reaction is used to heat water. The water vaporizes which causes pressure rise. The pressure is used to drive a turbine which runs a generator.
I hope this helps.
<u>Correct Question Format:</u>
Throughout your job search, you’ll find that
A the economy
B education
C salary
is closely related to the career of your choosing. It’s important to take the time to find out what to expect now, so you can start developing the
A task
B communication
C skill
that you need to excel in that career.
<u>Answer:</u>
Throughout your job search, you’ll find that education
is closely related to the career of your choosing. It’s important to take the time to find out what to expect now, so you can start developing the skill that you need to excel in that career.
<u>Explanation:</u>
At the time of attending our interview, we find that the question raised from an interviewer related to the choosing of the field and from our educational background. So, it clearly based on what we learn via our education and how we can get connected to the selected field but not based on our salary or an economy.
Similarly, it is essential to make a note about the requirement from the chosen field and have to prepare our skill accordingly. It means that required to develop the knowledge related to our selective field and should be presented in a connected way in front of an interviewer.
