12. When the sun is farthest north or south of the equator, the even is called solstice. When it is farthest to the north, it is called summer solstice and when it farthest to the south it is called winter solstice .
13. When neither hemisphere is tilted toward nor away form the sun, it is called equinox. At this time, daylight and night time is as long as each other, or they are both 12 hours long in both hemisphere.
Explanation:
Examples of chemical changes include, rusting, fire, and overcooking. Nuclear changes occur when the nuclei of atoms are rearranged to form new atoms. Examples of nuclear changes include atomic fission, nuclear fusion, and the energy of sun and stars.
Answer: 69.72 kg of cryolite will be produced.
Explanation:
The balanced chemical equation is:
To calculate the moles, we use the equation:
moles of 
= 
moles of 
= 
moles of 
= 
As 1 mole of reacts with 6 moles of
166 moles of reacts with = 
moles of
As 1 mole of reacts with 12 moles of
166 moles of reacts with = 
moles of
Thus is the limiting reagent.
As 1 mole of produces = 2 moles of cryolite
166 moles of reacts with = 
moles of cryolite
Mass of cryolite 
= 
Thus 69.72 kg of cryolite will be produced.
Ahh there isn’t a group 29 on the periodic table, but do you mean which element had the atomic number 29 because that would be Copper (Cu).
Hope this helps :)
Pressure is inversely proportional to volume. Therefore, the effect of pressure change is opposite to the effect of volume change. So when more gas is added to the chamber the total pressure of the chamber doesn't increase.
<h3>What are the different relations between pressure and volume?</h3>
- As the volume changes, the concentrations and partial pressures of both reactants and products change.
- As the volume decreases, the reaction shifts to the reaction side with fewer gas particles.
- As the volume increases, the reaction shifts to the side of the reaction containing more gas particles.
- As the pressure increases, the equilibrium shifts towards reactions with fewer moles of gas.
- As the pressure decreases, the equilibrium shifts to the side of the reaction with higher moles of gas.
- Moreover, the pressure change in the system due to the addition of the inert gas is not limited to this.
To know more about Pressure and Volume visit:
brainly.com/question/5018408
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