We have gravity here on earth while in space there’s none
Answer:
A. 29.9
Explanation:
- An element can have differing numbers of neutrons in its nucleus, but it always has the same number of protons. The versions of an element with different neutrons have different masses and are called isotopes.
- The average atomic mass for an element is calculated by summing the masses of the element’s isotopes, each multiplied by its natural abundance on Earth.
<em>Average atomic mass of P = ∑(Isotope mass)(its abundance)</em>
∴ Average atomic mass of P = (P-29 mass)(its abundance) + (P-30 mass)(its abundance) + (P-31 mass)(its abundance) + (P-33 mass)(its abundance)
<em>Abundance of isotope = % of the isotope / 100.</em>
<em>∴ Average atomic mass of P =</em> (29)(0.327) + (30)(0.4803) + (31)(0.184) + (33)(0.0087) = <em>29.88 a.m.u ≅ 29.9 a.m.u.</em>
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<em>So, the right choice is: A. 29.9</em>
The correct answer is A.
Electrochemistry: the study of electrical and chemical occurrences or phenomena
Answer:
I'm posting this so I can tell all of you that we should help him together in the comments because it seems we need more than one person to help him
The given reaction is
2 SO2 + O2 <=> 2 SO3, for which kp = 2 at a given temperature
Equilibrium constant = pSO3^2 / pSO2^2 X pO2
Q= (3.4)^2 / (2.2)^2 X 1.6 = 1.5
As Q< Kp
The reaction is not at equilibrium and reaction will go in forward direction