Answer:
D. The volume of the solvent used was less than 5 liters.
Explanation:
- We have the rule: the no. of moles before dilution equal the no. of moles after dilution.
<em>(MV) before dilution = (MV) after dilution.</em>
M before dilution = 10.0 M, V before dilution = V of stock = ??? L.
M after dilution = 1.0 M, V after dilution = 5.0 L.
<em>V before dilution = V of stock = (MV) after dilution/M before dilution</em> = (1.0 M)(5.0 L)/(10.0 M) = <em>0.5 L.</em>
∴ The volume of the stock used is 0.5 L.
The volume of the solvent used is 4.5 L.
<em>D. The volume of the solvent used was less than 5 liters.</em>
Answer:
4
Explanation:
The balanced equation for the reaction is as follows:
4Al + 3O2 --> 2(Al2O3)
They are called ISOTOPES.
:)
I'm pretty sure it becomes an ion! If an atom gains a negative electron, it becomes an ion.
Answer:
H-BI,H-Se,H-S,H-I,H-Br
Explanation:
One thing that must be kept in mind is that atomic size increases down the group and decreases across the period. The bond lengths of species are influenced by the relative sizes of atoms or ions present in the bond.
The bonds in the answer have been arranged on basis of their decreasing atomic size because the greater the atomic size of the atoms, the greater the bond length and vice versa.
