Which two particles in an atom have the same mass ? protons and electrons or protons and neutrons

Answers

Answer 1

Answer: Protons and neutrons have about the same mass. Electrons are the smallest out of the three, in fact, protons weigh 1,836 times more than an electron.

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Which best explains why nuclear reactions release more energy than chemical reactions?The forces holding the nucleus together are much stronger than the forces binding electrons to atoms.
Protons have a much higher mass and energy than either neutrons or electrons.
During a chemical reaction, some of the mass of the reactants is converted to energy.
In nuclear reactions, all neutrons are converted to energy.

Answers

I think the best answer is the first statement. The forces holding the nucleus together are much stronger than the forces binding electrons to atoms. Breaking the former bonds are releases more energy than breaking bonds in a chemical reaction.

Answer:

the asnwer i know for a fact is between A and C but its A

Explanation:

we know B and D are wrong for sure so its left in between A and C but

A its the one that make sense most : )

Which will cause a decrease in gas pressure in a closed containerA) Reducing the volume
B) Adding more gas
C) Lowering the temperature

Answers

By lowering the temps, there is a decrease in the pressure inside. so C.

Answer: C, Lowering the temperature

Explanation: Gradpoint

In an atom: The nucleus is made of electrons and protons. Protons have positive charges. Neutrons have negative charges. All of the above.

Answers

Answer: (b) protons have positive charges

Explain how molecular size plays a role in the strength of intermolecular forces.

Answers

The intermolecular forces increase with increasing polarization of bonds. The strength of intermolecular forces (and therefore impact on boiling points) is ionic > hydrogen bonding > dipole dipole > dispersion. "Boiling point increases with molecular weight, and with surface area" says one article

Boron occurs naturally as two isotopes. What is the difference between these isotopes?

Answers

Answer: The two isotopes of boron differs in mass number rather than atomic number.

Explanation:

Isotopes are defined as the chemical species that have same atomic number but differ in their mass number.

Boron is the 5th element of the periodic table and have 2 naturally occurring isotopes. The isotopes are : B-10 and B-11

For $_5^(10)\textrm{B}$ isotope:

Percentage abundance of this isotope = 20 %

Atomic number = 5

Mass number = 10

For $_5^(11)\textrm{B}$ isotope:

Percentage abundance of this isotope = 80 %

Atomic number = 5

Mass number = 11

Hence, the two isotopes of boron differs in mass number rather than atomic number.

"They have different numbers of neutrons and different mass numbers. Remember mass number is protons plus neutrons. The number of protons for an element will never change, however the number of neutrons can." I took the test, its D

What gas is formed when magnesium reacts with hydrochloric acid?

Answers

Hydrogen gas is formed when magnesium reacts with hydrochloric acid.

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