Answer: The Answer is 18.7ml.
Explanation: Solved in the attached picture.
Answer:
-2m/s/s
Explanation:
Acceleration = change in speed / change in time
Change in speed = final speed - initial speed
In this case the change in speed was 10m/s - 30m/s = -20m/s
And change in time was 10 sec (within 10 sec)
Therefore acceleration = -20/10 = -2m/s/s
The acceleration is negative because the car slowed down (decelerated essentially) and the unit for acceleration is meters per second per second because it is the change in speed per second.
Hope this helped!
Answer:
An aerosol is a colloidal A. liquid suspended in a C. gas.
Explanation:
Answer: The results of Rutherford's gold foil experiment gave him the evidence to arrive at two conclusions: (1) an atom was much more than just empty space and scattered electrons and (2) an atom consists of a positive charge at the center where most of its mass is placed.
Explanation:
Ernest Rutherford performed an experiment in which he passed alpha particles through a thin gold foil sheet. Through this sheet some of the particles passed on to the other side but some of them were reflected back.
This experiment was done by Rutherford to prove than an atom contains a tiny and heavy nucleus. He concluded that an atom has more than empty space and electrons were present in scattered form.
Also, he concluded that an atom consists of a positive charge at the center where most of its mass is placed.
Thus, we can conclude that the results of Rutherford's gold foil experiment gave him the evidence to arrive at two conclusions: (1) an atom was much more than just empty space and scattered electrons and (2) an atom consists of a positive charge at the center where most of its mass is placed.
Answer:
Radon is the heaviest Noble Gas
Explanation:
This statement is very easy to be solved. As we know that Noble Gases are group of Elements which have complete valence shell and are stable elements and don't react easily and hence, are found in mono-atomic form in nature. These elements can be found on the extreme right of the periodic table in group 8 or group 18. Following are the Noble elements,
(i) Helium
(ii) Neon
(iii) Argon
(iv) Xenon
(v) Radon
Now,
In statement we are provided with only two noble gases i.e. Helium and Radon. Therefore, it is easy among them to finalize the heaviest one as Radon having atomic mass of 222.02 g/mol and atomic radii of 0.22 nm is much denser/heavier than Helium having atomic mass of 4.0 g/mol and atomic radii of 0.122 nm.
