A lungful of air (339 cm3 ) is exhaled into a
machine that measures lung capacity. If the
air is exhaled from the lungs at a pressure
of 1.61 atm at 43.6
◦C but the machine is at
ambient conditions of 0.958 atm and 23 ◦C,
what is the volume of air measured by the
machine?
Answer in units of cm3
.

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

How do you determine the percent yield of a chemical reaction

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity