Answer:
C
Explanation:
The detailed solution is found in the image attached. It is necessary to note that the oxidation half equation is multiplied by three to balance electron gain and loss. This is adequately shown in the image below. Inferences are only drawn from balanced redox reaction equation hence the first step is to balance the redox reaction equation.
It explodes all over the place
Answer:
1.2 g
Explanation:
<u>For gallium:-</u>
Mass of gallium= 4.00 g
Molar mass gallium = 69.723 g/mol
The formula for the calculation of moles is shown below:
Thus,
<u>For arsenic:-</u>
Mass of arsenic = 5.50 g
Molar mass of arsenic = 74.9216 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the given reaction:
1 mole of gallium react with 1 mole of Arsenic
0.0574 mole of gallium react with 0.0574 mole of Arsenic
Moles of arsenic required = 0.0574 moles
Available moles of arsenic = 0.0734 moles
Limiting reagent is the one which is present in small amount. Thus, gallium is limiting reagent.
Moles left unreacted of arsenic = 0.0734 moles - 0.0574 moles = 0.016 moles
<u>Mass = Moles * Molar mass = 0.016 * 74.9216 g = 1.2 g</u>
The concentration of a dextrose solution prepared by diluting 14 ml of a 1.0 M dextrose solution to 25 ml using a 25 ml volumetric flask is 0.56M.
Concentration is defined as the number of moles of a solute present in the specific volume of a solution.
According to the dilution law, the degree of ionization increases on a dilution and it is inversely proportional to the square root of concentration. The degree of dissociation of an acid is directly proportional to the square root of a volume.
M₁V₁=M₂V₂
Where, M₁=1.0M, V₁=14ml, M₂=?, V₂=25ml
Rearrange the formula for M₂
M₂=(M₁V₁/V₂)
Plug all the values in the formula
M₂=(1.0M×14 ml/25 ml)
M₂=14 M/25
M₂=0.56 M
Therefore, the concentration of a dextrose solution after the dilution is 0.56M.
To know more about dilution
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Answer:
<em>The first three options given out of the five options are correct.</em>
- <em>It collects chemical data.
</em>
- <em>It records real-time sampling data.
</em>
- <em>It processes and stores chemical data.</em>
Explanation:
An electronic air sampler is a device that is used by people to check apprehension of contamination having individuals with the help of certain volume of air sampling.
The Device is used for recording the chemical data of contamination and the real-time data is sampled and recorded and the data is processed and stored. The air sampling is done in two ways.