The number of moles of silver, Ag, that are in 7.54 × 10²³ atoms of silver is 1.25 moles
From the question,
We are to determine the number of moles of silver, Ag, that are present in 7.54 × 10²³ atoms of silver
From the formula
Avogadro's constant = 6.022 × 10²³ atoms mol⁻¹
and
From the given information
Number of silver atoms = 7.54 × 10²³ atoms
Putting the parameters into the formula, we get
Number of moles of silver present = 
Number of moles of silver present = 1.2520757 moles
Number of moles of silver present ≅ 1.25 moles
Hence, the number of moles of silver, Ag, that are in 7.54 × 10²³ atoms of silver is 1.25 moles
Learn more on calculating number of moles here: brainly.com/question/15839520
I believe a. is the answer.
Answer: I think it is amount of rainfall
Explanation:
Answer:
pauli exclusion principle states that no two electrons in the same orbital can have the same spin.
Explanation:
this means you can't have 2 up arrows or 2 down arrows in your box
Answer is (1) - atomic number.
Atomic number is unique for an element. The elements in periodic table are organized according to the atomic number of elements. Another thing is atomic number is equal to number of protons of the element.
Mass number can be defined as the sum of proton number and neutron number. Although proton number is same for the atoms of same element, the neutron number can be varied. The atoms which has same atomic number but have different number of neutrons are called isotopes. Hence, mass number not enough for the identification of elements.
Only the neutron number is also not enough for the identification of elements. But if you have both mass number and the neutron number, then you can find atomic number by using <em>mass number = proton number + neutron number</em> equation. Then you can identify the element.
If you have total number of electrons of the element when it is in its neutral state you can identify the element because at neutral state <em>number of electrons = number of protons (atomic number). </em>But if only the valence electrons are given then you cannot find the element exactly<em> because usually all elements in certain group have same number of valence electrons.</em>
