The temperature in the stratosphere gets warmer with altitude.

True
False

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

What is the mass of 0.750 mole of aluminum oxide, al2o3?

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