The given information in the question is :
Frequency = 170 Hz
1 Hz = 
Frequency = 170
Wavelength given = 2 m
Speed is unknown which we need to calculate.
Speed can be calculated by using the formula : Speed = wavelength X frequency
By plugging the value of wavelength and frequency in the above formula we get :
Speed = 
Speed = 340
Ok, so... 20.219 grams is the mass of the flask with the water in it.
10.267 grams is the mass of only the flask. Subtract them to find the water mass.
20.219 g (flask+water) - 10.267 g (flask) = 9.952 g (water)
B. aluminum is the representative element. :)
E and B
Explanation:
The last option violates Aufbau's principle.
Aufbau's principle states that "the sublevels with lower energies are filled up before those with higher energies."
This implies that orbitals are not filled based on numerical order but on their energy levels.
The order is as follows;
1s 2s 2p 3s 3p 4s 3d e.t.c
In B, the 3s was not filled before jumping to 3p
In E, 3p was not filled before jumping to 3d and 3d was not even the next orbital.
learn more:
Atomic orbital brainly.com/question/1832385
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