Answer:
2,47 * (molecules)
Explanation:
Avogadro's number is a very important relationship: 1 mole = 6,02 * atoms, molecules, protons, etc.
To convert from moles to molecules, multiply the molar amount by Avogadro's number.
4,1 mol * 6,02 * ≈ 24,7 * = 2,47 * (molecules)
Therefore the third answer is correct
Missing question: <span>The decomposition of </span><span> XY is second order in </span><span>and has a rate constant of 6.96×10</span>⁻³ s⁻¹<span> at a certain temperature.
c</span>₀ = 0,050 M.
t = 55 s.
k = 6.96×10⁻³ s⁻¹.
Integrated second
order rate law is: 1/c₁ =
1/c₀<span> + k·t.
</span>1/c₁ = 1/0,050 M + 0,0069 s⁻¹ · 55 s.
1/c₁ = 20,38 1/M.
c₁ = 0,049 M.
Answer:
1.2 x 10>24 (2.0)(6.022 x 10>23)
Explanation:
How many formula units are in 2.0 moles of Fe(NO3)2?
Answer:A plant cell has a well defined shape, because it has a cell wall.
Explanation: