If a box has a mass of 300kg what is the weight on earth

323.4 N

Explanation:

weight = m * gravitational force

          = 300 * 9.8 (gravitational force of earth)

          = 323.4 Newtons

W = 2940 N

Explanation:

It is given that,

Mass of the box, m = 300 kg

Let W is the weight of the box on earth. The weight of an object is equal to the product of the mass and the acceleration due to gravity. Mathematically, it is given by :

W = 2940 N

So, the weight of the box on the earth is 2940 N. Hence, this is the required solution.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

no

sodium is solid at rt