The percent by mass of hydrogen in NH3 is equal to 1) 17/1 x 100
2) 17/3 x 100
3) 1/17 x 100
4) 3/17 x 100

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

This drawing shows a human body system. what is the primary function of this body system?