Answer:
Explanation:
Here, we want to calculate the number of moles of methane in the container
From the ideal gas law:
where:
P is the pressure inside the container which is 3 atm
V is the volume of the container which is 2 L
R is the molar gas constant which is 0.0821 Latm/mol.k
T is the temperature in Kelvin (we convert the temperature in Celsius by adding 273 : 273 + 77 = 350 K)
n is the number of moles that we want to calculate
Substituting the values, we have it that:
Answer:
Car lights are designed for two functions - to assist the driver and to communicate with other drivers. Accidents are more likely to occur when motorists fail to practice proper use of their lights.
Car lights include: Headlights. There are two types of headlights—low beam and high beam. These lights allow the driver to see the roadway in the dark, while also signaling to other motorists that a car is present.
Most drivers simply get into the car, start it and doesn't even think of lighting or the fact that it can provide security. But most of the light is about security and communications. The headlights and tail lamps ensure that other drivers see you, even in reduced visibility. This is crucial to avoid accidents.
Answer:
The last choice.
Explanation:
It does not conduct electricity in any form.
They have no free electrons and do not ionise.
Explanation:
The law of conservation of mass states that mass is conserved which also means that it cannot be created or destroyed within the isolated system.
We can add the mass of the reactant and can be equal to the mass of the product. But in some cases, it will not work like:
If reactants are not in the mole ratio, there will be a limiting reagent.
If a gas is one of reactants or products.
Radioactive decay and nuclear reactions(fission or fusion).
Soil.
Heterogeneous means is can be separated and soil can be taken apart and separated according to its contents. (Rocks, dirt, grass). <span />
