Mohr's salt is a pale green crystalline solid which is soluble in water. It is a 'double sulfate' which contains two cations, on
1 answer:
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<u>Answer:</u> The actual yield of the product is 38.57 g
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
We are given:
Given mass of Na = 17.25 g
Molar mass of Na = 23 g/mol
Putting values in equation 1, we get:
For the given chemical reaction:
By stoichiometry of the reaction:
2 moles of Na produces 2 moles of NaCl
So, 0.75 moles of Na will produce = of NaCl
We know, molar mass of = 58.44 g/mol
Putting values in above equation, we get:
The percent yield of a reaction is calculated by using an equation:
......(1)
Given values:
Percent yield of the product = 88 %
Theoretical value of the product = 43.83 g
Plugging values in equation 1:
Hence, the actual yield of the product is 38.57 g
Answer:
85.5 mmHg is the pressure of the gas sample when the valve is opened.
Explanation:
The combined gas equation is,
where,
= initial pressure of gas in container A = 165 mmHg
= final pressure of gas = ?
= initial volume of gas in container A=
= final volume of gas = 135 mL + 117 mL = 252 mL
= initial temperature of gas in container A =
= final temperature of gas =
Now put all the given values in the above equation, we get:
85.5 mmHg is the pressure of the gas sample when the valve is opened.
Answer:
a. Interference patterns are observed when a wave passes through a barrier with two slits
Explanation:
Interference is a situation where two waves superimpose to form a new wave of a different amplitude. This amplitude can be greater, same or lower.
the diagram attached below shows the movement of a wave through a barrier with two slits.
you can notice the portions of the wave that overlap. This overlapping of waves is the interference.
Thus, option A is correct.
The other options however, are not correct. as shown below:
Option B is wrong as waves exhibit diffraction <em>(it is diffraction of the light wave that produces the rainbows we see in the sky)</em>
Option C is wrong as waves do not travel straight through slits always.
Option D is wrong as waves can also interfere constructively and destructively.
