Answer is: there is 1,368·10²⁵ atoms of carbon.
N(C₃H₈) = 4,56·10²⁴.
From molecular formula: in one molecule of propane there is three atoms of carbon:
N(C) = 3 · 4,56·10²⁴.
N(C) = 1,368·10²⁵.
Answer:
a) Q = 0.025 KJ/g
b) Q = 0.602 KJ/mol
Explanation:
ΔU = Q + W.....first law
∴ a constant volume: ΔV = 0
⇒ W = 0
⇒ ΔU = Q = CvΔT
∴ Cv = 3.024 J/°C
∴ ΔT = 1.126 °C
⇒ Q = (3.024 J/°C)×(1.126 °C ) = 3.405 J
⇒ Q = 3.405 E-3 KJ
a) Q [=] KJ/g
⇒ Q = (3.405 E-3 KJ) / (0.1375 g) = 0.025 KJ/g
b) Q [=] KJ/mol
∴ Mw Mg = 24.305 g/mol
⇒ Q = (0.025 KJ/g)×(24.305 g/mol) = 0.602 KJ/mol
C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
A kilometer is equal to 1000 meters and a meter is equal to 100 centimeters, so:
1 km = 100000 cm
1 cm = 0,00001 km
Just multiply or divide it by 100000.