Estimate the average mass of element Y, if it is composed of two isotopes. The first isotope have a mass of 81amu and percent abundance of 45.45%. The second isotope have a mass of 79amu. 80.909amu 79.990amu 79.909amu 80.409amu

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Q: Markovnikov's rule is needed to predict the organic product in which of the following reactions?…

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Q: 10. The pH of 0.25 M aqueous solution of a weak acid HA is observed to be 4.15. Determine the acid…

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Q: 2. In the following reaction at equilibrium: 2CrO, (aq, yellow) + 2 H30* (aq) Cr202 (aq, orange) + 3…

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Q: . How many liters are required to obtain 0.182 moles of NaNO3 from a 0.824 M NaNO3 solution?

A: Given that:  Moles of NaNO3 = 0.182 moles Concentration of NaNO3 solution = 0.824M

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A: Given,  Redox reaction, MnO2(s) + 4H+(aq) + 2Cu+(s) -------> Mn2+(aq) + 2H2O(l) + 2Cu2+(aq)

Q: C,H120 LOD D 4000 3000 2o00 HAVENUHBERI 00ot Assign. Shift (ppm) 3.596 (2H, t) 3.05 (1H, s) 1.558…

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Q: 20. What is A,G° (in kJ) at 500.0 K for the following reaction: Zn(s) + H2O(g) - ZnO(s) + H2(g)? 200…

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Q: 8. Mg CO, ether 9. KMNO, HO. 10. он ? H.O

A: Given,

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Q: 2) An individual plasma [Na+] is measured and found to be 130 mEq/L (normal = 145 mEq/L). What is…

A: Plasma Osmolality

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Q: At the equivalence point, you had equal number of moles of acid and base, and the acid was…

A: The required calculations have been done in the following step.

Q: 3. According to the following reaction, if the rate of appearance of Cl is 4.00 x 10° M/s, what is…

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Q: 14. If the pH at half way to the first equivalence point is 3.20, pH at first and second equivalence…

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A: In the given compounds, * = Chiral center.

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Q: STEREOCHEMISTRY 1. Convert the following condensed and Lewis structures into line-angle structures…

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A: Detail mechanistic pathway is given below to find out the product for every reaction

Q: 15. Victoria added 6 M HCI to a sample of the unknown, containing at least one of the Group I…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.