1 point
1 answer:
Answer:
<h2>Volume = 20.22 cm³</h2>Explanation:
The density of an object can be found by using the formula
From the question
Density = 15.29 g/mL
mass = 309.109 g
To find the volume make volume the subject and solve for the volume
That's
We have
volume = 20.216415
We have the final answer as
Volume = 20.22 cm³ to two decimal places
Hope this helps you
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Answer:
Explanation:
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In this case, we can see that the mass of carbon of the unknown compound comes from the yielded mass of carbon dioxide, thus, we compute the moles of carbon as follows:
Moreover, the mass of hydrogen comes from the yielded water, therefore we can also compute the moles of water:
Then, to find the subscripts in the empirical formula, we divide by the moles of carbon as the smallest:
Whose molar mass is:
Thus, the ratio of the molecular formula to the empirical formula is:
Therefore, the molecular formula is twice the empirical formula:
Which is actually ethane.
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Answer:
The partial pressure of when the valve is opened is 328.6 Torr.
Explanation:
Initial pressure of the
Initial volume of the
After opening the valve :
Final pressure or partail pressure of the
Final volume of the
( Boyle's law)
The partial pressure of when the valve is opened is 328.6 Torr.