Why do less dense compounds make up Earths crust while the densest compounds make up the core

Final answer:

A positive ion, also known as a cation, has more protons than electrons as a result of losing electrons. For example, a sodium atom becomes a +1 sodium ion when it loses an electron. The number of neutrons does not affect the charge of ions.

Explanation:

A positive ion, also known as a cation, is formed when an atom loses one or more electrons. This causes the atom to have more protons than electrons, thereby gaining a positive charge. So, the correct answer to your question is A. Protons than electrons.

For instance, when a sodium atom (which has 11 protons and 11 electrons) loses an electron, it becomes a sodium ion with a +1 charge, having 11 protons and only 10 electrons.

Neutrons are particles present in the nucleus of an atom that do not carry any charge. Hence, the number of neutrons doesn’t affect the charge of ions.

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Final answer:

A positive ion, or a cation, has more protons than electrons because it forms by losing electrons. Therefore, it has a net positive charge. The number of protons and neutrons doesn't change during this process.

Explanation:

A positive ion, also known as a cation, is formed when an atom loses electrons. The loss of electrons results in the atom having more protons than electrons, and subsequently more positive charge than negative, hence the name positive ion. Therefore, the correct answer to your question is A. protons than electrons. However, it’s important to note that the number of protons and neutrons in an atom does not change during chemical reactions or during the formation of ions.

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Answer:

           Option-C (The attractive forces are stronger in a solid)

Explanation:

                   The substance either exist as a Solid or Liquid depends upon on the following two factors;

       ii)  Kinetic Energy:

                                      Greater the K.E of particles, greater will be the distance between the particles of a substance. In Liquids the K.E of particles is greater than the K.E of particles in Solid. Hence, the Liquid Particles separated by greater distance as compared to particles of Solids.

       ii)  Attractive Intermolecular Forces:  

                                                                    Greater the Attractive Intermolecular Forces between the particles of a substance, smaller will be the distance between the particles. As the distance between the particles in Solid state of substance are very small as compared to that of Liquids hence, it can be concluded that the Attractive Intermolecular Forces in Solids are stronger than Liquids.

Answer:

Explanation:

Combine Gas law is a combination of  three gas laws which are  Boyle's Law, Charles' Law, and Gay-Lussac's Law.

Combine gas law states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant.

Hence the equation becomes:

where P = pressure,

V = volume,

T = absolute temperature,

k = constant.

Now we know that Kelvin = °Celsius + 273

For all gas law problems it is necessary to work in the Kelvin scale because temperature is in the denominator in the combined gas laws (P/T, V/T and PV/T) and can be derived in the ideal gas law to the denominator (PV/RT) . If we measured temperature in Celsius we could have a value of zero degrees Celsius and this would solve as no solution, as you cannot have zero in the denominator.

However, if we reached zero in the Kelvin scale this would be absolute zero and all matter would stop and therefore there would be no gas laws to worry about.

Answer:

Virtual images.

Hope this helps.