Answer:
the correct answer is D Elements
Na, C, and O so the answer is c. 3
Answer:- The gas needs to be transferred to a container with a volume of 11.2 L.
Solution:- From Boyle's law. "At constant temperature, Volume is inversely proportional to the pressure."
It means, the volume is decreased if the pressure is increased and vice versa.
Here, the Pressure is decreasing from 537 torr to 255 torr. So, the volume must increase and calculated by using the equation:
Where, is initial pressure and is final pressure. Similarly, is initial volume and is final volume.
Let's plug in the values in the equation:
(537 torr)(5.30 L) = (255 torr)()
= 11.2 L
So, the new volume of the container needs to be 11.2 L.
Answer:
Explanation:
We should firstly define the equation that we'll be using for the purpose of this problem. Percent by mass is defined as the ratio between the mass of a component (such as books, CDs or DVDs in this case) divided by the total mass of the pack multiplied by 100 %:
Here is the mass of a component;
is the total mass (of the pack).
Firstly, let's find the total mass of the pack summing all the individual masses present:
Now, we have a total of 3 components. Let's firstly apply the equation for books:
Similarly, find the percent by mass of CDs:
Finally, find the percent by mass of DVDs: