The correct answer would be the second option. When the gibbs free energy of a system is negative and the electromotive force (EMF) of the system is positive then the reaction is to occur readily without any input of energy. With this, the reaction is said to be spontaneous. The higher the value of the EMF of a cell then it means the driving force for the reaction to occur is also high.
Explanation:
higher or lower energy, depending on the element
<u>Answer</u>:
If beaker tongs are not available, we could use crucible tongs to handle the hot beaker
<u>Explanation</u>:
Crucible tongs is tool shaped like a scissor where instead of two blades, two pincers or pieces of metals that concave together is used. They help us to hold or grasp a hot beakers, flasks or even small beakers. It is difficult for the people to catch or hold the hot beakers directly. So crucible tongs plays a vital role when burning, or using hot objects in the chemical laboratory.Crucible tongs are generally made with strong metal such as nickel, stainless or oxidized steel so as to withstand very high and extreme temperatures.
C) Condensation is the opposite of evaporation.
Condensation is the phase when water droplet form. Ex) When you have a glass of ice water the water droplets on the outside of the glass are condensation.
Evaporation is when a liquid heats up and turns into a steam or mist. Ex) When you boil water the steam that comes up from the pot is actually water!!
Therefore condensation is caused by cold temperatures, and evaporation is caused by hot temperatures.