Type the CONVERSION factor (fraction) to calculate the moles in 15.0 g of potassium sulfide, K2S. *
10 points

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

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

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?