Well, one can take 13 and subtract 56 which is -43.
One can also add 56 to 13 to equal 69.
C is the answer.
Answer:
Salt is produced by the reaction of an acid with a base.
Explanation:
A salt consists of the positive ion(cation) of the base and the negative ion (anion) of an acid. The reaction between a base and an acid (neutralisation) leads to formation of a salt.
We have to wonder what substance you're working with. Under normal, human environmental conditions, there are almost no substances that freeze and boil at the same temperature.
However, EVERY substance has SOME temperature, at some pressure, at which it "sublimes" ... passing directly from solid to gas, or from gas to solid, without existing in liquid form in between. Even water does that, if the conditions are right.
Phase is an expression related to vibration. Just like phase 1 phase 2, phase 3 etc, it's basically a stage a particle is in, in its travel. Same phase means all the particles are in same stage of traveling, therfore same speed and direction.
Answer:
Positive sign for negative velocity and minus sing for positive velocity
Explanation:
In the case of the negative velocity, the sign of the acceleration that reduces its magnitude is the positive sign, since being in the opposite direction to the movement indicates a deceleration or braking. In the case of the positive velocity, the sign of the acceleration that reduces its magnitude is the negative sign, since being in the opposite direction to the movement indicates a deceleration or braking. We observe that there will always be a reduction in the magnitude of the velocity if the acceleration goes in the opposite direction.