Weight is a measure of how much gravity pulls on a mass or object. On the moon, there is less gravity pulling on objects, so they weigh less. ... Remember, even if you weigh less because of a change in gravity's force on your body, your body's mass is still the same.
Answer:
Through Total internal reflection.
such as formation of multiple images.
Explanation:
As the light ray Strikes the mirror surface, the incident ray is refracted away from the normal and critical angle exceeds the normal.
Hence the light ray partially transmitts or refracts and also reflects.
Experimental investigations
Answer:
C
Explanation:
We know that the molar mass of KOH is 56 gmol-1
Molar mass of Mg(OH)2 is 58.31 g/mol
Now; the balanced reaction equation is; MgCl2 + 2KOH → Mg(OH)2 + 2KCI
Hence;
2 moles of KOH yields 1 mole of Mg(OH)2
4 moles of KOH yields;
4 moles of KOH/1 mol * 1 mole Mg(OH)2 /2 moles KOH * 58.31 g Mg(OH)2 / 1 mole Mg(OH)2
So option c is correct