Which of the following has the greatest mass?
a. 1 mole of oxygen
b. 1 mole of sodium
c. 1 mole of chlorine
d. 1 mole of uranium

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

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.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?