Answer:
Particles move faster the farther they are apart, so the container with the most spread out particles.
Adding energy to a matter causes a physical change. Head to water becomes vapor--taking energy away also causes physical change, (water becoming ice,) when heat is the energy being removed.
Answer:
9.82% of iron (II) will be sequestered by cyanide
Explanation:
We should first consider that Iron (II) and cyanide react to form the following structure:
[Fe(CN)₆]⁻⁴
Having considered this:
5.60 Lt Fe(II) 3.00x10⁻⁵ M ,this is, we have 5.60x3x10⁻⁵ = 1.68x10⁻⁴ moles of Fe⁺² (in 5.60 Lt)
Then , we have 9 ml NaCN 11.0 mM:
9 ml = 0.009 Lt
11.0 mM (milimolar) = 0.011 M (mol/lt)
So: 0.009x0.011 = 9.9x10⁻⁵ moles of CN⁻ ingested
As we now that the complex structure is formed by 1 Fe⁺² : 6 CN⁻ :
9.9x10⁻⁵ moles of CN⁻ will use 1.65x10⁻⁵ moles of Fe⁺² (this is, this amount of iron (II) will be sequestered
[(1.65x10⁻⁵ sequestred Fe⁺²)/(1.68x10⁻⁴ total available Fe⁺²)x100
% sequestered iron (II) = 9.82%
Answer:
Its the first second and the fourth
Answer:
<em><u>Mass of Ni = 4.14 grams</u></em>
Explanation:
Molar mass : It is the amount of substance present in 1 mole of the molecules.
Moles : It is the quantity that contains as many atoms as present in 12 gram of C-12. This is equal to Avogadro Number .
Molar mass of Ni = 58.69 g/mole
Moles can be calculated by two formula:
........(1)
And ,
.........(2)
Comparing equation 1 and 2
M = 58.69 g/mole
Put these value in the formula and solve for m
m = 4.14 gram
<em><u>Mass of Ni = 4.14 grams</u></em>
<em><u>Second Approach :</u></em>
Find the moles first using :
Then put value of n in the formula(1) and solve for m
........(1)
