Answer:
argumentation is a necessary part of scientific inquiry.
Explanation:
Answer:
They represent the valence electrons, so s and p sublevels only! This does not include the d block!
Answer:
The answer to your question is : letter B. 0.25 atm
Explanation:
To solve this problem we need to use the combined gas law:
<u>P₁V₁</u> = <u>P₂V₂</u>
T₁ T₂
Data
P1 = 0.99 atm V1 = 2 l T1 = 273K
P2 = ? V2 = 4 l T2 = 137K
Now, the clear P2 from the equation and we get
P2 = P1V1T2 / T1V2
Substitution P2 = (2 x 0.99 x 137)/(273 x 4)
P2 = 271.26 / 1092
Result P2 = 0.248 atm ≈ 0.25 atm
Its c ok im sorry if i got the last answer wrong
valence of magnesium is 2
and valence of sulfate-ion is 2 too
answer: MgSO4•7H2O