P me have no brain please help I just wanna get through the year According to the law of conservation of mass, what is the mass of sodium oxide (Na20) formed in this reaction? 4Na 91.96 g 02 32.00 g 2Na 0 ?

A. 247.92 grams

B. 123.96 grams

C. 61.68 grams

D. 495.84 grams​

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?