Answer:
1.3005 M
Explanation:
Given that,
Mass of NaCl =
Molar mass of NaCl=
The formula for calculation of moles,
Moles,
Given that volume
Molarity,
Therefore the molarity is 1.3005 M.
In the question, the number of atoms per unit cell is required for:
A) Polonium (Po)
In polonium, the structure is simple cubic, meaning there are 8 corner atoms, which add up to one atom per unit cell.
B) Manganese (Mn)
The structure of the Mn can be considered to be a body centered cubic (BCC) and the number of atoms for this is 8 corner atoms and 1 central atoms, making a total of 2 atoms per unit cell.
C) Silver (Ag)
Silver has a face centered cubic (FCC) unit cell structure, where there are 8 corner atoms and 6 atoms on the faces, so there are a total of 4 atoms per unit cell.
Answer:
Reducing agent: nitrogen.
Oxidizing agent: chromium.
Explanation:
Hello,
In this case, the first step is to rewrite the undergoing chemical reaction indicating the oxidation state for each atom as shown below:
In such a way, we observe the following half-reactions:
* Reduction as chromium undergoes a decrease in its oxidation state:
* Oxidation as nitrogen undergoes an increase in its oxidation state:
In such a way, we state that the nitrogen is the reducing agent as it is oxidized and chromium the oxidizing agent as it is reduced, therefore, the balanced chemical reaction turns out:
Best regards.
Answer:
HCOOH(aq) + OH-(aq) —> HCOO-(aq) + H2O(l)
Explanation:
HCOOH is a weak acid and so will not ionised completely in solution.
KOH is a strong base and will ionised completely as shown below
KOH(aq) –> K+(aq) + OH-(aq)
The overall reaction can be written as follow:
HCOOH(aq) + K+(aq) + OH-(aq) —> HCOO-(aq) + K+(aq) + H2O(l)
Cancel out the K+ to obtain the net ionic equation as shown below
HCOOH(aq) + OH-(aq) —> HCOO-(aq) + H2O(l)