Which of the following equations best illustrates the Law of Conservation of Mass?
2 NaCl + Cao - Na,0 + CaCl2
4 NaCl + Cao → 2 Na,0 + CaCl,
NaCl + Cao Na, o + CaCl,
3 NaCl + 2 Cao Na O + 3 CaCl2

Match each scenario to the form of energy it represents

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above

Which phrase describes the paleo-indians of prehistoric arkansas? a. grew cornb. lived in cliff dwellings c. crafted beautiful potteryd. hunted with stone-tipped spearswhich phrase describes native arkansas from the woodland traditiona. developed widespread agricultureb. hunted mastodon and woolly mammothc.built rectangle-shaped homesd. traded salt with other groups