<span>So, when you make something boiling or melting, its still the same substance. Water doesn't change into something else, just change its state of matter. When you burn something, one substance reacts with another. For example, when you burn carbon in oxygen, you get carbon dioxide. That's the difference.</span>
The answer for the question given is A. Heating with a flame.
One of the processes that cause a chemical change is heating. An example of this is cooking or baking, which causes a permanent chemical change in substances. Also, all of the other choices are examples of physical changes.
First, determine the amount of vinegar in grams by multiplying the volume by the density. That is,
mass = (355 ml) x (1.01 g/mL) = 358.55 g
Then, multiply the calculated mass above by the decimal equivalent of the given percentage above.
amount of acetic acid = (358.55 g)(0.0602) = 21.58 g
Answer: The partial pressure of
is 0.35 atm.
Explanation:
Given: Total pressure = 0.98 atm
Partial pressure of
= 0.48 atm
Partial pressure of Ar = 0.15 atm
Partial pressure of
= ?
Total pressure is the sum of partial pressure of each component present in a mixture of gases.
Hence, partial pressure of
is calculated as follows.
Total pressure = ![P_{N_{2}O} + P_{O_{2}} + P_{Ar}](https://tex.z-dn.net/?f=P_%7BN_%7B2%7DO%7D%20%2B%20P_%7BO_%7B2%7D%7D%20%2B%20P_%7BAr%7D)
Substitute the values into above formula as follows.
![Total pressure = P_{N_{2}O} + P_{O_{2}} + P_{Ar}\\0.98 atm = P_{N_{2}O} + 0.48 atm + 0.15 atm\\P_{N_{2}O} = 0.35 atm](https://tex.z-dn.net/?f=Total%20pressure%20%3D%20P_%7BN_%7B2%7DO%7D%20%2B%20P_%7BO_%7B2%7D%7D%20%2B%20P_%7BAr%7D%5C%5C0.98%20atm%20%3D%20P_%7BN_%7B2%7DO%7D%20%2B%200.48%20atm%20%2B%200.15%20atm%5C%5CP_%7BN_%7B2%7DO%7D%20%3D%200.35%20atm)
Thus, we can conclude that the partial pressure of
is 0.35 atm.