Answer:
The molarity of the solution is 7.4 mol/L
Explanation:
From the question above
0.400 ml of water contains 1.00 g of hydrochloride form of cocaine
Therefore 1000 ml of water will contain x g of hydrochloride form of cocaine
x = 1000 / 0.400
x = 2500 g
2500g of hydrochloride form of cocaine is present in 1000 ml of water.
Mole of hydrochloride form of cocaine = mass /molar mass of hydrochloride
Mole of hydrochloride form of cocaine = 2500/339.8
= 7.4 mol
Molarity = mol/ volume in liter (L)
molarity = 7.4 /1
Molarity = 7.4 mol/L
Answer:
Down below
Explanation:
The following uses nickel(II) chloride
2AgNO3(aq) + NiCl2(aq) ==> Ni(NO3)2(aq) + 2AgCl(s) Molecular
The electrons and the nuclei will settle into positions that minimize repulsion and maximize attraction.
The entropy (S) for one mole of crystalline N₂O at 0 K is 3.28 × 10⁻²² J/K.
<h3>
What is Entropy (S) ?</h3>
- The quantity of thermal energy per unit of temperature in a system that cannot be utilized to carry out meaningful work is termed as entropy.
- It is denoted by S.
- Since work is generated by ordered molecular movement, entropy also acts as a substitute for a system's molecular disorder or unpredictability.
- Entropy theory offers deep insights into how frequently common events spontaneously change.
- Boltzmann's entropy formula that gives the relation between the absolute entropy S of a thermodynamic system and the number of possible microstates is given as follows :
S = k logW , Where K is Boltzmann's constant.
From the given question,
S = (1.38 × 10⁻²³) (6.022 × 10⁻²²)
S = 3.28 × 10⁻²² J/K
Learn more about entropy with the given link
brainly.com/question/13135498
#SPJ4
Answer:
option D denotes electron in lowest energy level.
Explanation:
the energy of an electron in hydrogen orbit is given by 
where z is the atomic number and n is the energy level or orbit number . therefore as the n increases energy also increases.
