One useful method for recycling scrap aluminum converts some of it to common alum [potassium aluminum sulfate dodecahydrate, KAl(SO4)212 H2O], an important dye fixative and food preservative. (a) How many moles of potassium ions are in 356 g alum? WebAssign will check your answer for the correct number of significant figures. 0.752 Correct: Your answer is correct. mol (b) What is the mass % S in alum (to 3 significant figures)? WebAssign will check your answer for the correct number of significant figures. 13.5 Correct: Your answer is correct. % (c) What is the maximum amount of alum (in metric tons) that can be prepared from 18.5 metric tons of scrap aluminum (1 metric ton = 1000 kg)? WebAssign will check your answer for the correct number of significant figures. metric tons

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

they are all solids.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

hope this contact me for more questions if you'd like: )