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elixir [45]
2 years ago
10

How many moles of N2O3 contain 2.55 × 1024 oxygen atoms

Chemistry
1 answer:
Varvara68 [4.7K]2 years ago
6 0
1mol   ------------   3×6,02×10²³ oxygen atoms
x          ------------   2,55×10²⁴

x = 2,5×10²⁴ × 1mol / 3×6,02×10²³ ≈ 0,138*10 mol = 1,38mol

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The final temperature of both substances when they reach thermal equilibrium is 31.2 °C

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Step 2: Calculate the final temperature

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Qgranite = - Qwater

Q = m*c*ΔT

m(granite)*c(granite)*ΔT(granite) = -m(water)*c(water)*ΔT(water)

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⇒with c(granite) = The specific heat of granite = 0.790 J/g°C

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⇒with m(water) = the mass of water = 24.0 grams

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11.376T2 - 978.336 = -100.32T2 + 2508

111.696 T2 = 3486.336

T2 = 31.2 °C

The final temperature of both substances when they reach thermal equilibrium is 31.2 °C

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