Grace injured her ankle while running a relay race at the family reunion. Her aunt breaks the inner, activator portion of an instant cold pack releasing the solid urea into the surrounding water. How could Grace modify this device to make it colder faster? A) Expand the volume of the urea in the activator cell. B) Maximize the overall size and volume of the cold pack. Eliminate C) Increase the concentration both main and activator phases. D) Include a slow release activator solution to increase longevity.

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.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

може ли да зареждате повече информация, моля