Submarines sometimes make a "pinging" sound to determine the depth of an object in the ocean. this process is called a. sonar. b. radar. c. refraction. d. diffraction

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe