Yes it is due to refraction of light in water
Answer:- d. -0.35 degree C is the right answer.
Solution:- depression in freezing point, delta Tf formula is...
delta Tf = i x m x kf
where, i is Van't hoff factor. glucose is covalent compound and does not dissociate to give ions and so the value of i for this is 1.
m is molaity and kf is the molal freezing point constant.
Let's plug in the given values in the formula..
delta Tf = 1 x 0.19 x 1.858
delta Tf = 0.35
Pure water freezes at 0 degree C.
So, freezing point of solution = 0 - 0.35 = -0.35 degree C
Explanation:
It is known that atoms that have same number of valence electrons will show similar chemical properties.
So, when we move from left to right across a period there occurs increase in number of valence electrons of each element. But when we move down a group then number of valence electrons remain the same.
Hence, elements of same group will show similar chemical properties.
Therefore, we can conclude that elements marked as 2 and 3 will have similar chemical properties.
Answer:
a light ray will always A light ray will always reflect away from a surface at an angle equal to the angle at which it struck the surface
Explanation:
it sound more formal and just plainly better
Actually, the ionic equation for this is a reversible
equation since codeine is a weak base. Any weak base or weak acids do not
completely dissociate which makes them a reversible process. The ionic equation
for this case is:
<span>C18H21O3N + H3O+ </span><=>
C18H21O3NH+ + H2O
