Answer:
You start with 9.4 x 1025 molecules of H2.
You know that an Avogadro's number of molecules of H2 has a mass of 2.0 g.
To solve, 9.4 x 1025 molecules H2 x (2.0 g H2 / 6.023 x 1023 molecules H2) = 312. g H2
Explanation:
Answer:
An atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other.
For example,
Al atom has 13 protons and 13 electrons. The number of positive and negative charge is equal thus it will be neutral atom.
While the atom of Al which have 13 proton and 10 electron is not neutral. The positive charge is greater than negative by 3. Which means 3 electrons are lose by Al atom and form cation "Al⁺³".
Thus an atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)
Decreasing
Increasing
Explanation:
We can change gas to liquid by decreasing the temperature and increasing the pressure.
- Temperature is the degree of hotness or coldness of a body.
- It is a function of how much heat it has absorbed or lost.
- Heat causes the thermal energy of a system to increase and the particles becomes randomized.
- Pressure is the force per unit area of particles.
- If we decrease the temperature of gases, they have less kinetic energy and entropy reduces.
- The will not be random.
- Further increasing their pressure will bring them together and make them flow like liquid.
- This phase change is often called condensation.
learn more:
Phase change brainly.com/question/1875234
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I think this is the answer, carbon equals atomic number six which means it's the sixth element on the periodic table and then it has six protons. So the nucleus will have one, two, three, four, five, six protons which are all positively charged. ... So, if you add a proton to a carbon nucleus, you'll get nitrogen. Hope it helped!
