Answer:
d - orbital
Explanation:
The d-orbital can modelled by a peanut shape.
A peanut shape closely resembles the shape of a double dumb-bell shape. The double dumb-bell shape is like that of a peanut.
- The s-orbital has a spherical shape.
- p - orbital is dumb-bell shaped
- d - orbital is a double dumbell
- f - orbital has a complex shape.
Therefore, since a peanut is like a double dumb-bell, it clearly models the d-orbital.
Calcium chloride (CaCl2) is a salt which dissociates when
dissolved in water. Assuming that the dissociation is complete (100 %), then
the half reaction for this would be:
<span>CaCl2 ---> Ca2+
+ 2 Cl-</span>
We can see that in 1 mole of CaCl2 salt, 1 mole of Ca2+
ion and 2 moles of Cl- ion is created. Therefore there are 3 moles of ion per 1
mole of CaCl2. Using this ratio, the total number of moles of ions in the
solution is:
Total number of ions = 0.5 mol CaCl2 * (3 moles ion / 1
mol CaCl2)
<span>Total number of ions = 1.5 moles ion</span>
Answer:
C. the boiling point of water
Explanation:
B is correct because boiling point only usually differs among the same substance when pressure changes. So say you take one solution onto a mountain top and another at sea level, the boiling point will not be the same, but here we assume they are in the same place so it won't.
A cannot be because the containers are all different shapes (and we aren't talking about like molecular shape of water from what I assume, we mean macroscopically, so that can't be).
B cannot be because we have 4 different temperatures.
D cannot be because we have 4 different temperatures, and therefore different amounts of steam will be released per minute as not all the waters have reached boiling.
p [OH-] = -log[OH-]= -log ( 1x10^-11M) = 11
we know that
p[OH-] + p[H+] = 14
so p[H+] = 14- p[OH-] = 14- 11 = 3
pH = 3, answer
Answer:
Explanation
Hardness has been defined the level of difficulty with a smooth surface of a mineral may be scratched. The hardness of a mineral species is upon the strength of the bonds which compose its crystal structure Hardness is measured of how easily a material can be scratched or indented Hard materials are often very brittle.
