Answered: Calculate the equivalence of 1 eV in…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 134AP

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From I part I cannot understand why not c and ii part I cannot understand either
'N Brz NaOH N- ●
(Incorrect) In order to prepare very dilute solutions, a lab technician chooses to perform a series of dilutions instead of measuring a very small mass. A solution was prepared by dissolving 0.360 g of KNO3 in enough water to make 500. mL of solution. A 10.0 mL sample of this solution was transferred to a 500.0-mL volumetric flask and diluted to the mark with water. Then 10.0 mL of the diluted solution was transferred to a 250.0-ml flask and diluted to the mark with water. What is the final concentration of the KNO3 solution? 7.12 x 103 M (Your answer) 2.85 × 10-6 M 7.91 × 10-⁹ M 5.70 x 106 M (Correct answer) 1.42 × 10-4 M
What is the pH of (3.21x10^-1) M C5H5NHBR? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 Answer
Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it. The median lethal dose of KCNKCN for a person weighing 215 lblb (97.5 kgkg ) is 8.84×10−3 molmol . What volume of a 0.0250 MM KCN KCN solution contains 8.84×10−3 molmol of KCNKCN? ------ Gastric acid pH can range from 1 to 4, and most of the acid is HClHCl. For a sample of stomach acid that is 4.42×10−3 MM in HClHCl, how many moles of HClHCl are in 10.5 mLmL of the stomach acid? Express the amount to three significant figures and include the appropriate units.
= (1) H H H H (2) (3)
In the preparation of a standard stock solution for protein analysis, 50 mg of bovine serum albumin (BSA) was dissolved in deionized distilled water to a final volume of 10 mL. What is the weight of BSA in 0.60 mL stock solution?
Can you please help me with a, b, c and d A buffer is prepared using lactic acid (HLac) and sodium lactate (NaLac). 0.300 dm3 of the0.500 mol·dm–3 HLac solution is mixed with 0.300 dm3 of the 0.300 mol·dm–3 NaLac solution to prepare the buffer. Ka for lactic acid (HLac) is 1.4 x 10-4 a) Calculate the pH of the lactic acid before it is mixed with the NaLac to form the buffer. b) Calculate the pH of the sodium lactate solution before it is mixed with the HLac to form the buffer. c) Calculate the pH of the buffer solution. d) What will the pH of the above solution be after 5.0 cm3 of 0.200 mol·dm–3 NaOH has been added to only 100.0 cm3 of this buffer?
. In C.AJ = - kt.tln [A.o]. t¹/₂ = 0.693 K In = KE •1• [A]o⋅=⋅· 100 ·/. [A] + = left . CAJO. CAJE In. [100] [s] t =.kt K= 0.693 t¼½₂ CAJO t = |n² Ch t = ln [AG] ·K CAJO K= In [At]. t Formulas Problem: Na-24 has a half life of 15 hours. How much of a 20.09. ·Sample would remain after decaying for 60 hours? Plz explain step by step. using the formulas..
A 650.0−g sample of river water taken near an industrial plant contains 27 mg of chromium.What is the mass percent of chromium in the river? How many parts per million of chromium are in the river? How many parts per billion? answer in scientfic notation
cloudy ||| O CHEMICAL REACTIONS Calculating molarity using solute moles Calculate the concentration in umol/L of the chemist's silver(I) nitrate solution. Round your answer to 3 significant digits. µ mol L A chemist prepares a solution of silver(I) nitrate (AgNO3) by measuring out 319. μmol of silver(I) nitrate into a 250. mL volumetric flask and filling the flask to the mark with water. Explanation Check x10 X Ś INTBcSzwZ0GGhrmlP4yCejeRhX9HIzqlzRTj2iaDBXTCRIHYWNO_-o? 10... Q Search 2 3/5 Jessica O 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww E 00 Ar
=0 4 NH3 (1 equiv.)

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Calculate the equivalence of 1 eV in kcalories/mol.