250 kJ/87.9 KJ per mole Cl2 * 71g/mole= 202 g It is D for plato users
Explanation:
As it is known that entropy is the degree of randomness of the molecules of a substance or object.
When particles or molecules of a substance are placed in orderly manner then it means that there is low entropy. But when molecules are randomly moving then it means the system is in disorder and will have high entropy.
Since, molecules of a solid are orderly arranged. Therefore, solid substances have very low entropy.
Liquid molecules have the ability to slide past each other. Hence, liquids have moderate entropy whereas gas molecules are held by weak intermolecular force.
So, molecules of a gas move much more rapidly and hence, they have high entropy.
As it is given that 3 He is cooled to 2.7 mK, and the liquid settles into an ordered super-fluid state.
Therefore, there will occur a decrease in entropy.
Thus, we can conclude that the sign of entropy for the given case is negative.
Answer:- 9.98 grams.
Solution:- The given balanced equation is:
From this equation, there is 1:1 mol ratio between methanol and formic acid. We start with given grams of methanol and convert them to moles. Then using mol ratio the moles of foramic acid are calculated and finally converted to grams on multiplying by it's molar mass.
The calculations could easily be done using dimensional analysis as:
= 
Hence, 9.98 grams of formic acid can be formed from 6.95 grams of methanol.
Answer:
e) intensity of precipitation f) location of precipitation.
Explanation:
Doppler radar can see not only the precipitation in a thunderstorm (through its ability to reflect microwave energy, or reflectivity), but motion of the precipitation along the radar beam. In other words, it can measure how fast rain or hail is moving toward or away from the radar. From a volume scan (a series of 360-degree sweeps, each tilting a little higher than the last), forecasters can get a detailed look at structures and movements in storms close to the radar. The farther away from the radar a storm is, the more coarse the view, because: 1) The radar beam spreads out with distance, like a flashlight beam, causing small features to be missed at a distance; and 2) The beam shoots straight as the earth curves away from beneath -- a horizon that forces the radar to miss more and more of the low and middle levels of a storm with distance.
https://www.spc.ncep.noaa.gov/faq/tornado/doppler.htm
The explanation was copy pasted from there^ so check it out.
