Answer:
newtons 2nd law is the answer
<u>Answer:</u> The average atomic mass of copper is 63.55 amu.
<u>Explanation:</u>
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
.....(1)
- <u>For
isotope:</u>
Mass of
isotope = 62.94 amu
Percentage abundance of
= 69.17 %
Fractional abundance of
isotope = 0.6917
- <u>For
isotope:</u>
Mass of
isotope = 64.93 amu
Percentage abundance of
= 30.83 %
Fractional abundance of
isotope = 0.3083
Putting values in equation 1, we get:
![\text{Average atomic mass of Copper}=[(62.94\times 0.6917)+(64.93\times 0.3083)]\\\\\text{Average atomic mass of copper}=63.55amu](https://tex.z-dn.net/?f=%5Ctext%7BAverage%20atomic%20mass%20of%20Copper%7D%3D%5B%2862.94%5Ctimes%200.6917%29%2B%2864.93%5Ctimes%200.3083%29%5D%5C%5C%5C%5C%5Ctext%7BAverage%20atomic%20mass%20of%20copper%7D%3D63.55amu)
Hence, the average atomic mass of copper is 63.55 amu.
A positively charged nucleus with two protons and two neutrons hope this helps :)
Answer:
A
Explanation:
B. That's a solid
C. Liquid is the only thing that can have viscosity
D. Not necessarily the case
Explanation:
It is given that volume of
is 300 mL and molarity is 0.200 M.
Volume of NaCl is 200 mL and molarity is 0.050 M.
The chemical reaction will be as follows.

for
is given as
.
As, molarity is number of moles present in liter of solution.
Hence, moles of
(aq) will be calculated as follows.
moles of
(aq) = 
= 0.06 mol
= 
= 0.120 M
Mole of
=
= 0.010 M
Now, Q =
= 
=
As, Q <
hence, there will be no formation of
precipitate.