In a closed system, equal amounts of ammonia and oxygen react to produce nitrogen monoxide and water. What is the limiting reactant? 4NH3 + 5O2 → 4NO + 6H2O A) NH3
B) O2
C) NO
D) H2O

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Do polar molecules have ionic bonds?