Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN: 9781285686691
Author: Crouch
Publisher: Cengage
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Imagine that you are given 0.2500 g of a sample of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O). You very carefully heat the compound for an extended period of time to drive off water, after which you determine the mass of the remaining solid to be 0.1598 g. Determine whether the data given confirm the formula of the hydrate. You must show any relevant calculation
Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CnH2n+1COOH where n is an integer than ranges from 1 to 18. What would be the %C by mass if n = 10 ?
Atomic weights: C=12.01, H=1.01, O=15.99.
Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula CnH2n+1COOH where n is an integer than ranges from 1 to 18. What would be the %C by mass if n = 14 ?
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- EDTA, which is short forethylenediaminetetraacetic acid, is a chemical used inthe textile industry to prevent metal impurities fromchanging the colours of dyed products. Th e empiricalformula for EDTA is C5H8NO4. Th e molar mass ofEDTA is 292.24 g/mol. What is its molecular formula?arrow_forwardprofessor Scimemi has accepted you as a Master’s student and you are involved in a project that studies the cellular basis of neuropsychiatric diseases. For your electrophysiology recordings you have to make a recording solution containing (in mM): 119 NaCl, 2.5 KCl, 2.5 CaCl2, 1 MgCl2, 26.2 NaHCO3, 1 NaH2PO4, 22 glucose. You need 800 ml of it. How much KCl do you need to weigh out? Hint: we only care about KCl here. (MW KCl is 74.55 g/molarrow_forwardA sample of unknown hydrate, AC·XH2O, has a mass of 1.000 g before heating and a mass of 0.781 g after heating. If the molar mass of the anhydrous compound (AC) is 195.5 g/mol, what is the water of crystallization for the formula of the unknown hydrate? In other words, what is the X in the formula: AC·XH2O?arrow_forward
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