What is the molar mass of a 0.730 g sample
of gas that occupies a volume of 0.600 L at
a pressure of 0.520 atm and a temperature of
15.0◦C?
Answer in units of g/mol.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

What substance has a mass of 9.5g and volume of 2.1cm^3

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.