Answer:
46.96 amu
Explanation:
Isotopes are different kinds of same elements. The difference between two isotopes of the same element is the number of neutrons.
To get the relative atomic mass, we take into consideration the masses of the different isotopes. This is done by multiplying their abundances by their masses. They are then added together to get the relative atomic mass of the element.
Let the isotopic mass of 47Z be x
45.36 = [80/100 * 44.96] + [20/100 * x]
45.36 = 35.968 + 0.2x
0.2x = 45.36 - 35.968
0.2x = 9.392
x =9.392/0.2 = 46.96 amu
Answer:
0.903 A
Explanation:
We have given mass of Sn = 1 gram
Time t=30 minutes=30×60=1800 sec
According to Faraday law m=zit
Where z is electron chemical equivalent
z is calculated by 
where n is number of element and F is Faraday constant
So 
So 
i =0.903 A
<span>Ionization energy (IE) is the amount of energy required to remove an electron.
If you observe the IEs sequentially, there is a large gap between the 2nd and 3rd. This suggests it is difficult to remove more than 2 two electrons. Elements that lose two electrons to become more stable are found in the Group 2A (2 representing the number of electrons in the outermost valence shell).</span>
Charles's Law.
<u>V1</u><u> </u> = <u>V2</u>
T1 T2
V1 = 720 mL
T1 = 22°C
T2 = 106°C
V2 = ?
then,
<u>7</u><u>2</u><u>0</u><u> </u> = <u>V2</u><u> </u>
22 106
V2 = 3469 mL
Answer:
The new molarity is 0.614 M
Explanation:
Formula for dilutions is:
M concentrated . Volume of conc = Volume of dil . M diluted
6.54 M . 249 mL = 416 mL . M diluted
Notice that volume of diluted is = Initial volume + What we added of water
(249mL + 167 mL)
(6.54 M . 249 mL) / 416mL = M diluted → 0.614 M
