Answer:
Explanation:
<u>1) Data:</u>
a) T = 25°C = 25 + 273.15K = 298.15 K
b) P = 1 atm
c) assumption: ideal gas
<u>2) Formulae and principles</u>
a) Ideal gas equation: p V = n R T, where:
- p = pressure
- V = volume
- n = number of moles
- R = universal constant of gases = 0.0821 atm-liter / K-mol
- T = absolute temperature (Kelvin)
b) Molar volume: ν = V / n, where:
- ν = molar volume
- V = volume
- n = number of moles
<u>3) Solution:</u>
- p V = n R T⇒ V/n = ν = RT / p =
= 0.0821 atm-liter / mol-K × 298.15 K / 1 atm
= 24.5 liter / mol
Answer:
As resistance increases, current increases. As resistance increases, current decreases. As resistance increases, current stays the same.
Answer:
when it reduces heat.
Explanation:
Thermal energy is transferred to material,the motion of its particles speeds up and it's temperature differences.Insulating materials are bad conductors and so this reduces the heat loss by conduction.The material also prevents air circulating inside the cavity,therefore reducing heat loss by convection.Heat loss through the roof can be reduced by laying loft insulation.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
