The molar volume, symbol Vm<span>, is the </span>volume occupied by one mole of a substance at a given temperature and pressure. <span>It is equal to the </span>molar<span> mass divided by the mass density. Therefore, we calculate as follows:
Vm(CO2) = 44.01 / 1.56 = 28.21 cm^3 / mol
</span>Vm(NH3) = 17.03 / 0.84 = 20.27 cm^3 / mol
Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity. Let’s say an object is moving along a table on earth, suddenly the finite table ends, resulting in the object being present in the air, which means there is no normal contact force N to combat the force by gravity mg, which is why there is an acceleration downwards. This proves as a projectile motion since the direction of motion start changing from horizontal to vertical. Another example is one throwing an object up. It moves up and slows down, reaching its maximum point, leading to it starting to move downwards. This too is a change in motion.
Helium has an atomic number 2 and an atomic weight of 4 grams per mole. It is one of the noble gas (which means that it is stable) and also a nonmetal. Its electron configuration is 1s2. There are energy levels and they are s, p, d and f. The s level means that its maximum number of electrons is only 2.
Answer:
In diseases that still do not have vaccines, humans would have to be much more careful not to have an injury, since vaccines are a way of having antibodies against microorganisms so that we can survive or better defend ourselves against them.
Vaccines are active acquired immunity, this means that a person who is vaccinated acquires new defenses that are manufactured by their own body, that are not vaccinated or that the vaccine does not exist are diseases that could potentiate with the life of the human being or trigger symptoms graves
Explanation:
People who are not vaccinated or suffer from pathologies that do not have vaccines do not have antibodies to fight the microorganism in the first infection, therefore the pathology develops in a much more serious, harmful and even lethal way.
Antibodies are proteins that our body manufactures by inoculating DNA structures, proteins, inactive bacteria, etc. in the form of a vaccine, these proteins are the method of recognition of said microorganism.
Thus generating that once the microorganism enters the body after the vaccine has been placed, it is recognized and eliminated.All this process written simply in the previous text happens in vaccinated people, in those who do not have the vaccine or are not vaccinated. suffer the opposite consequences for lack or deficit of acquired immunity.
Vaccination is a form of active acquired immunization and each country has a different vaccination plan according to the pathologies that prevail in the area to protect the population that lives in them.
Answer:
The question has some details missing which I have shown in the attached file.
Explanation:
The concept of arrehenius equation is used to calculate the activation energy.
- Given T1 = 141.0 degree celsius = 414K and K1 = 3.3 x 10^8
- T2 = 77 degree celsius = 350K and k2 = 1.1 x 10^8
- from Arrehenius equation;
- ln(k2/k1) = -Ea/R [1/T2 - 1/T1]
- ln(1.1/3.3) = -Ea/8.314 [ 1/350 - 1/414]
- Ea = 20.679KJ/mol = activation energy for this reaction
