You do a paper chromatography experiment using the same conditions as in the simulation. Your solvent front migrates 9.41 cm and your sample migrates 6.67 cm. Which of the four compounds in this video would your sample likely contain? Justify your answer with a calculation.

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false