Ireally need ! no one has me! will give brainliest, , andif you are good at science and hurry ! how does the law of conservation of mass apply to this reaction: c2h4 + 3o2 --> 2h2o + 2co2? a. only the oxygen needs to be balanced b. the equation needs to be balanced. there are fewer oxygen atoms in the equation than hydrogen and carbon c. the law of conservation of mass has already been applied d. each element needs to be balanced

It is "c", and i hope it's correct. please pm me, if you need more help

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia