Answer:
ok... whats the question ?
Explanation:
Answer:
Root mean squared velocity is different.
Explanation:
Hello!
In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:
![v_{rms}=\sqrt{\frac{3RT}{MM} }](https://tex.z-dn.net/?f=v_%7Brms%7D%3D%5Csqrt%7B%5Cfrac%7B3RT%7D%7BMM%7D%20%7D)
Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.
Best regards!
Considering the definition of percentage by mass, the mass percentage of CaCO₃ is 68.59%.
<h3>What is mass percentage</h3>
The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.
In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:
![mass percentage=\frac{mass of solute}{mass of solution}x100](https://tex.z-dn.net/?f=mass%20percentage%3D%5Cfrac%7Bmass%20of%20solute%7D%7Bmass%20of%20solution%7Dx100)
<h3>Mass percentage of CaCO₃</h3>
In this case, you know:
- mass of CaCO₃: 2.62 grams
- mass of limestone: 3.82 grams
Replacing in the definition of mass percentage:
![mass percentage=\frac{2.62 grams}{3.82 grams}x100](https://tex.z-dn.net/?f=mass%20percentage%3D%5Cfrac%7B2.62%20grams%7D%7B3.82%20grams%7Dx100)
<u><em>mass percentage= 68.59 %</em></u>
Finally, the mass percentage of CaCO₃ is 68.59%.
Learn more about percentage by mass:
brainly.com/question/24201923
brainly.com/question/9779410
brainly.com/question/17030163
#SPJ1
Answer:
you can find the answers on safari
Explanation:
you can type the question but write nothing in the spots that dont have anything
You have to solve it and color in the numbers i guess? It doesnt show all of the work