Answer:
solid
Explanation:
in the solid state the material will has a fixed shape and volume whatever the container that contains it
where in liquid the shape will be different depending on the container
and in gas state the shape and volume are not definite
1.77 so A. I don’t need to explain this just helping out haha
Answer:
Pergunta 1: Como se forma um óxido?
Pergunta 2: O que acontece com uma moeda quando escurece?
Pergunta 3: Quais outros compostos podem ser formados a partir de óxidos?
Answer:
The answer to your question is 2.52 moles
Explanation:
Data
Volume = 60.5 l
Temperature = 20°C
Pressure = 1 atm
Constant of ideal gases = R = 0.082 atm l/mol°K
Formula
PV = nRT
-Solve for n
n = PV / RT
-Convert temperature to °K
Temperature = 20 + 273
= 293°K
-Substitution
n = (1 x 60.5) / (0.082 x 293)
-Simplification
n = 60.5 / 24.026
-Result
n = 2.52 moles
Answer:
ΔH°c = - 1605.1 KJ
Explanation:
- CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
∴ ΔHf CH4(g) = - 74.6 KJ/mol
∴ ΔHf CO2(g) = - 393.5bKJ/mol
∴ ΔHfH2O(g) = - 241.82 KJ/mol
standard enthalpy of combustion (ΔH°c):
⇒ ΔH°c = (2)(ΔHf H2O) + ΔHfCO2 - ΔHfCH4
⇒ ΔH°c = (2)(- 241.82) + ( - 393.5 ) - ( - 74.6 )
⇒ ΔH°c = - 802.54 KJ/mol
⇒ ΔH°c = ( - 802.54 KJ/mol )( 2 mol CH4 )
⇒ ΔH°c = - 1605.08 KJ
