Answer:
Out of the options provided Neon is the least dense gas
Explanation:
Answer:
The Avogadro's Number will reduce in value
Explanation:
From the question we are told that
The current pass through the short circuit is 
Here I is the total current
Generally Avogadro's Number is mathematically represented as

Here Q is the charge which is mathematically represented as

n is number of moles
e is the charge on an electron
So

Now when the current decreases from 100% to 90% due to the short circuit . this will also reduce the no of moles of metal dissolved hence from the equation we see that the Avogadro's Number will reduce
Answer:
Since pH is a logarithmic scale, a difference of one pH unit is equivalent to a tenfold difference in hydrogen ion concentration. ... Pure water and a solution of NaCl in pure water are both neutral, since dissociation of water produces equal numbers of both ions.
Explanation:
hoped this helped
<span>The chemical formula of Helium is He.
Question 1 :
Given n = 1.11 x 10^-6
To get no. of the particle,
No of particle = no. of mole x Avogadro Constant
p = n x NA
1 mol of Helium = 6.02 x 10^23
No of atoms = (6.02 x 10^23) x (1.11 x 10^-6)
= 6.66 x 10^17
................................
Question 2 :
Given p = 4.29x10^21
p = n x NA
4.29 x 10^21 = n x (6.02 x 10^23)
(4.29 x 10^21) / (6.02 x 10^23) = n
n = Approximately 7.126 x 10^-3
Hope the answer is right :)</span>
The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy. Today, this process uses instruments with a grating that spreads out the light from an object by wavelength. This spread-out light is called a spectrum.
I hope this helps.