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anastassius [24]
3 years ago
15

How is the atomic mass of an element calculated?

Chemistry
1 answer:
zloy xaker [14]3 years ago
6 0

Answer:

Mass number (A) is the number of nucleons (proton and neutron) present in a atom.

Explanation:

electrons don't cout since they are thousandth's of the mass of protons or neutrons

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Write the expression for the equilibrium constant Kp for the following reaction. (Enclose pressures in parentheses and do NOT wr
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Answer and Explanation:

For the following balanced reaction:

PCl₅(g) ↔ PCl₃(g) + Cl₂(g)

We can see that all reactants and products are gases, so it is an homogeneous equilibrium. The expression for the equilibrium constant Kp can be written from the partial pressures (P) of reactants and products as follows:

Kp=\frac{(P PCl_{3})(P Cl_{2})}{(P PCl_{5})}

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2 years ago
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Atoms are indivisible spheres-Dalton model

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3 years ago
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How many moles of SO2 will be produced from 11.5 moles of O2?
pshichka [43]

Explanation:

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1. The fourth principle electronic level has:
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Answer:

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