Uranium atoms each have 92 protons. how many protons does each u-238 atom have? a. 92 b. 146 c. 238 d. 330

The correct answer is Option A.

Explanation:

Atomic number is defined as the number of protons or electrons that are present in a neutral atom. It is represented by Z.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom. It is represented by A.

Mass number = Number of protons + Number of neutrons

We are given an isotopic representation of

Number of protons = 92

Mass number = 238

Number of neutrons = 238 - 92 = 146

For every uranium atom, number of protons will be 92

Hence, the correct answer is Option A.

i think a, hope it .

explanation:

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !