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
The correct answer is option A. Three, dumbbell.
The p sublevel has __three_orbitals that are _dunmbbell_-shaped.
The three orbitals of the p sublevel are oriented in three directions along the x, y and Z axis. The orbitals are called px, py and pz. Each p orbital can have a maximum of 2 electrons. Since there are three p orbitals, the p sublevel can have a maximum of 6 electrons.
Answer:
The analytical molar concentration is 0,04743M
The equilibrium concentrations are HA = 0,01281M; H⁺ and A⁻ = 0,03462M
Explanation:
The analytical molar concentrations is:
155mg ≡ 0,155g÷163,4g/mol = 9,486x10⁻⁴ moles
9,486x10⁻⁴ moles ÷ 0,020L = <em>0,04743 M</em>
The trichloroacetic acid [HA] dissociates in water in a 73%, thus:
HA ⇄ H⁺ + A⁻
The equilibrium concentrations are:
HA = 0,04743M ×(100-73)% = 0,01281M
H⁺ and A⁻ = 0,04743M ×73% = 0,03462M
I hope it helps!
Therefore, the energy from the sun has been transferred and converted to the last animal on the food chain from the primary producer.
1. B. has twice as many atoms
2. D. has the same number of molecules
<h3>Further explanation </h3>
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
1.
3.011 × 10²³ atoms of Na, 1.0 mole of Carbon
1 mole Carbon = 6.02.10²³ atoms, so 1 mole of Carbon B. has twice as many atoms of Na
2.
1.0 mole of H₂S (molar mass 334 g/mol), 1.0 mole of NH₃ (molar mass 17g/mol)
Both have the same number of moles, so they have the same number of molecules
1.0 mole of NH₃ D. has the same number of molecules as 1.0 mole of H₂S
