The energy levels of an atom are occupied by ____.

Answers

Answer 1

Answer: Electrons occupy the energy levels of an atom.

Answer 2

Answer:

Final answer:

The energy levels of an atom are occupied by electrons. These energy levels are often represented as shells, and each level can hold a specific number of electrons. Electrons are crucial in determining an atom's properties.

Explanation:

The energy levels of an atom are occupied by electrons. An atom's structure consists of a nucleus, which is surrounded by the energy levels. These energy levels, often represented as shells, house the electrons. For example, the first energy level can accommodate up to 2 electrons, while the second energy level can hold up to 8. These electrons play a critical role in determining the physical and chemical properties of atoms and subsequently, the substances they form.

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What is the molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate, Na2SO4?0.007 mol/L
0.07 mol/L
0.0007 mol/L
0.7 mol/l

Answers

Answer:

The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7 $(moles)/(liter)$

Explanation:

Molarity is a concentration measure that indicates the amount of moles of solute that appear dissolved in each liter of the mixture.

So, the Molarity of a solution is determined by the expression:

$Molarity (M)=(number of moles of solute)/(volume)$

Molarity is expressed in units ( $(moles)/(liter)$ ).

In this case:

number of moles= 0.0350

Volume=50 mL=0.05 L (1 L= 1,000 mL)

Replacing:

$Molarity=(0.0350 moles)/(0.05 L)$

Molarity= 0.7 $(moles)/(liter)$

The molarity of a 50.0 mL solution that contains 0.0350 mol of sodium sulfate 0.7 $(moles)/(liter)$

if you were designing a pot to cook spaghetti in , which parts would you make from good conductors of heat ? which parts would you make from insulators ? explain your answer.

Answers

you would use materials such as metal or iron becuase materials such as metal and iron attract heat and allows heat to pass through meanwhile other materials such as wood would not allow heat to pass

you would make the part the spaghetti goes in with conductors && you would make the handle with insulators.

If an object has more negative charges than positive charges, the object has an overall

Answers

The object has an overall negative charge.

It will have an overall negative charge.

Isotopes of the same element have different numbers of ________. protons
neutrons
neutrons and electrons
protons and electrons

Answers

Answer : The correct option is, neutrons

Explanation :

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Number of protons

For example : Carbon - 13 isotope has mass number = 13, atomic number = 6 and the number of neutrons = 13 - 6 = 7

Hence, the isotopes of the same element have different numbers of neutrons.

The answer is neutrons

What was helium used for in the past?

Answers

Helium used to be used in hot air balloons. Then, when the Hindenburg exploded, annexed file, they realized that hydrogen was not only lighter, but it also was less flammable.

Hot air balloons. They have a little hot plate/fire or whatever and they used, and that made the helium rise, thus rising the balloon.

Which type of radioactive particle (alpha, beta, or gamma) is most harmful to humans, and why? Alpha particles, because they are the largest Beta particles, because they are the fastest Gamma rays, because they have the most energy None of these are harmful