You mix baking soda and vinegar in an open container and the mass after the reaction is less than the mass at the start. Which of the following is the best
explanation for this?
Some of the mass was lost as a gas
Some of the mass was destroyed in the reaction
The reaction caused the particles to shrink and become lighter

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)