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.
We need moles of Ca(OH)_2
- Molarity=Moles/Volume in L
- 0.025=Moles/1.5
- Moles=1.5(0.025)
- Moles=0.0375mol
Molar mass of Ca(OH)_2=74g/mol
Now
- Mass=Molar mass×Moles
- Mass=0.0375×74
- Mass=2.77g
Option C
Answer: D
Explanation:
The sun shines the sputhern hemisphere fully on the top= summer
the sun shines somewhat towards the Southern Hemisphere but itfaces away= fall
sun doesnt show at the bottom= winter
faces it more than example b= D