How much mass is equivalent to 1mj of energy? (1 mj=1*10^6 j) (the mass energy equivalence equation and speed of light are given below.) e=mc^2 c=3.0*10^8 m/s a. 3.3 * 10^-3 kg b. 1.1 * 10^-5 kg c.1.1 * 10^-11kg d.9.0*10^22kg

Which substances have the lowest melting points: ionic covalent, or metallic

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature