Asked by Hi
A 115-g sample of steam at 100 °C is emitted from a volcano. It condenses, cools, and falls as snow at 0.0 °C. How many kilojoules were released?
Can someone please teach me how to do this? I've seen other posts, but I don't understand that Q1, Q2, Q3 thing. I'm not sure what numbers to enter where, if that makes sense.
Can someone please teach me how to do this? I've seen other posts, but I don't understand that Q1, Q2, Q3 thing. I'm not sure what numbers to enter where, if that makes sense.
Answers
DrBob222
I hope Hi and K are not the same person. To be brief, the problem is to determine the heat released when 115 g steam @ 100 C condenses, falls to zero, and freezes as snow. That's three steps. The steam must condense and that's q1 for that step. Then the water falls in temperature from 100 C to zero C and the heat released in that step is q2. The the liquid water @ zero C freezes to solid water as snow and that's q3. The total heat released then is Qtotal = q1 + q2 + q3.
For the specifics of that as well as how to do ANY problem like this, go to the site from K. That is https://www.jiskha.com/questions/1864658/a-115-g-sample-of-steam-at-100-c-is-emitted-from-a-volcano-it-condenses-cools-and
If you need further assistance post your work and explain clearly what you don't understand. For example, not understand what q1, q2, q3 is very clear and where I started with this post. For what numbers to substitute see the link above. I gave specifics for q1 and q2.
For the specifics of that as well as how to do ANY problem like this, go to the site from K. That is https://www.jiskha.com/questions/1864658/a-115-g-sample-of-steam-at-100-c-is-emitted-from-a-volcano-it-condenses-cools-and
If you need further assistance post your work and explain clearly what you don't understand. For example, not understand what q1, q2, q3 is very clear and where I started with this post. For what numbers to substitute see the link above. I gave specifics for q1 and q2.