Using the following general equation for a nuclear reaction, complete the statements below.

the atomic number for uranium .

the mass of the reactant neutron .

the atomic mass for krypton is .

there are barium neutrons.

the number of neutrons this reaction emits is .

The answer is;

92192853

Respectively (in order of the blanks).  

Atomic number is the number of protons in  the nucleus of an atom. All uranium atoms have 92 protons, hence their atomic number is 92.          
The neuron has 1 neuronic mass (meaning it has the mass of one neutron – this is why it has 0 as subscript because this generally describes the number of protons present.
Mass number  is the sum of protons and neutrons in the nucleus of the atoms. This mass number is usually indicated as the superscript on the symbol representing the element.
To derive the number of neutrons in an isotope, subtract the mass number with the atomic number.
3 because the number in front of the element symbol in a reaction indicates the number (in moles) of that element in that reaction (either in the reactants or products side). These numbers ensure that the equations are balanced and observe the first law of thermodynamics

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27. =3,500,000 x 4,000 = 14,000,000,000