Dry unpolluted air is usually considered to contain about : -
78.08% nitrogen
20...
Dry unpolluted air is usually considered to contain about : -
78.08% nitrogen
20.95% oxygen
an average of 0.247% water vapour (very variable)
& approximately 1% of other gases
these other gases are the noble gases consisting of : -
argon (0.93%)
neon (less than 0.01%)
helium (less than 0.01%)
krypton (less than 0.01%)
xenon (less than 0.01%)
radon (less than 0.01%)
regarding non-nobel gases, there is also carbon dioxide at 0.038%, and tiny traces of hydrogen.
Answers: 2
Chemistry, 22.06.2019 17:10, hahahwha
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
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