Number of grams of Na2S there are in 5.50 x 10 to the 21 molecules of Na2S

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag