Answer:
The set of coefficients that would correctly balanced the equation
NaCl → Na + Cl2 is the option D
(2,2,1)
Explanation:
In this reaction sodium chloride splits into sodium and chlorine.
For balancing the equation we should have number of atom of the element in the left hand side equal to the number of atom of the same element in the right-hand side.
so here in left hand side only one sodium and one chlorine is given and in the right-hand side one sodium and two chlorine is given.
So for the balancing the equation both the side should be same.
So we will write the balanced equation as
2NaCl → 2Na + Cl2
So, right now it is balanced that is two sodium and two chlorine on the left hand side as well as the right hand side.
Hence the coefficients are
2, 2, 1
In a transformer, energy is carried from the primary coil to the secondary coil by magnetic field in the iron core.
To find the answer, we have to know more about the transformer.
<h3>
How transformer works?</h3>
- An item utilized in the transfer of electric energy is a transformer.
- AC current is used for transmission.
- It is frequently used to modify the supply voltage between circuits without altering the AC frequency.
- The fundamentals of mutual and electromagnetic induction govern how the transformer operates.
- Magnetic field through the primary coil changes when primary coil current varies. the iron core of the secondary coil likewise has a magnetic field.
- EMF is therefore generated in the secondary coil.
Thus, we can conclude that, in a transformer, energy is carried from the primary coil to the secondary coil by magnetic field in the iron core.
Learn more about the transformer here:
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Answer:
Explanation:Before to Rutherford, the accepted model for the atom was Thomson's model:
The atoms were a positive sphere, with electrons occupying space in it".
This was called the "plum pudding model".
Then came Ernest Rutherford, and he created a model where the atoms are mostly empty space (void) with a positive charged nucleus (really compressed in the center), and the electrons were orbiting around it.
Then the correct option is that the atom is mostly empty space.
The safest option in the lab if one need your vision to be corrected is wear corrective glasses or lenses under your safety goggles for the whole experiment, but always check with your ta or instructor for your school's policy.
<h3>What are safety goggles?</h3>
When someone is performing any project in the chemistry lab, he needs to be extra care taken by himself and and the most importantly from the school. The safety goggles are used to protect the eyes from any spiling off the chemical.
One should wear corrective glasses under the safety goggles during the whole experiment.
Thus, wear corrective glasses under the safety goggles during the whole experiment.
Learn more about safety goggles
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