Answer:
Use molar mass:)
Explanation:
3.62 mol of Sn (
)=429.694
Since 3.62 has 3 sig figs, limit 429.694 to 3
= 430
N = 4 moles of Ar2, P = 1.90 atm, V = ?
T = 50C = 273 + 50K = 323K
PV = nRT --> V = nRT/P
V = (4)(.0821)(323)/1.90
V = 106.07/ 1.9
V = 55.8 L
It depends, for example, it is quite important to know the Kelvin scale (i.e 0 degrees Celsius is 273 K and -273 degrees Celsius is 0 K ) when dealing gases. But I don't know other situations where you would need to know other temperature scales.
Hope this helps and also if you are using Fahrenheit 1 Fahrenheit is -17.22 degrees Celsius
Usually, elements which share the same group, they have similar properties, here only Lithium and sodium share same group as they both are alkali metals.
So, In short, Your Answer would be option B) Lithium and Sodium
Hope this helps!
This is just addition. Put 2140.56 on top, line up 9.3456 under it appropriately. Doing this will give you the answer: 2149.9056
