Answer:
Explanation:
An atom is composed of three particles -- protons, neutrons and electrons. The number of protons is the defining characteristic of an element, and this number also tells you how many electrons are present in a neutral atom. Therefore, iron -- with an atomic number of 26 -- has 26 protons and electrons.
Answer: Catalyst
Explanation:
The catalyst is a chemical which accelerates a reaction decreasing the activation energy, that is the energy that is necessary for a reaction occur. We can see in a standard graphic that the uncatalyzed reaction has a big curve while the catalyzed reaction has a minor curve. It shows the more facility that a catalyzed reaction has to occur.
The question is incomplete. Complete question is:
<span>All of the following containers have the same volume and temperature, which container has the most molecules
container 1-25.0 atm
container 2-50.0 atm
container 3- 12.5 atm
container 4- 1.00 atm
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From, ideal gas equation, we know that PV = nRT
Thus, number of moles of gas depends on pressure, volume and temperature. Since, volume and temperature are held constant. number of moles of molecules will depends only on pressure of gas.
From above equation is can be seen that n </span>α P. Thus higher the pressure, more will be the molecules.
∴ In present case, container 2 will have <span>most molecules, as it has maximum pressure. </span>
