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- At elevated temperature NaHCO3 is quantitatively converted to Na2CO3. By calcining 0.3592 g of an antacid tablet containing NaHCO3, 0.2362 g of Na2CO3 was obtained. Calculate the percentage purity of the tablet (such as % w/w NaHCO3) It would be appreciated if you could write each step to the answer.Dinitrogen monoxide (N₂O; nitrous oxide) is a greenhousegas that enters the atmosphere principally from natural fertilize rbreakdown. Some studies have shown that the isotope ratios of ¹⁵N to ¹⁴N and of ¹⁸O to ¹⁶O in N₂O depend on the source, which can thus be determined by measuring the relative abundance ofmolecular masses in a sample of N₂O.(a) What different molecular masses are possible for N₂O?(b) The percent abundance of ¹⁴N is 99.6%, and that of ¹⁶O is 99.8%. Which molecular mass of N₂O is least common, andwhich is most common?By knowing the natural abundance of minor isotopes, it's possible to calculate the relative heights of M+ and M+1 peaks. If natural abundances are 12C - 98.9% and 13C - 1.10%, what are the relative heights, to the nearest 0.1%, of the M+ and M+1 peaks in the mass spectrum of benzene, C6H6? Ignore the contributions of isotopes like 2H (deuterium; 0.015% natural abundance) and 17O (0.04% natural abundance) that are small.The relative heights are, in order of increasing mass: 100 to ____
- is the A:B ratio just a place holder for the unknown compound can you use other variables in place of "A and B" also would H2O work as another formula instead of Na2OIn correct sigfigs, what is the answer of -log(3.512x10^-6)?A mixture containing only Al2O3 (FM 101.96) and Fe2O3 (FM 159.69) weighs 2.019 g. When heated under a stream of H2, the Al2O3 is unchanged, but the Fe2O3 is converted to metallic Fe plus H2O(g). If the residue weighs 1.774 g, what is the weight percent of Al2O3 in the original mixture? (Do not include % symbol in your answer.)
- I have no idea how to solve part b-part d. For part b, I have tried m/z and Mass-to-charge ratio. However they were both wrong.A new analytic instrument is capable of detecting picogram quantities of a chemi-cal substance. How many times more capable is this instrument than one that candetect nanogram quantities of the same chemical?Orciprenaline(C11H17N03,211.258 g/mol) is a bronchodilatorused in the treatment of asthma.The BP assay for orciprenalinetablets is described below. Read thefollowing information carefully andanswer the questions below.(Record your answers in decimalnotation to the indicated significantfigures OR decimal places)ASSAY - 20 tablets weighing 2.597 gwere crushed to a powder. Aportion of the crushed powder(0.5456 g) was shaken with 50 mL of0.1 M HI, the mixture was filteredand made up to 100 mL. 10 mL ofthis solution was further diluted to100 mL with 0.1 M HCI. Themeasured absorbance of thediluted solution at 276 nm was0.582. Additional information: A1%72.3, stated content = 20 mg Calculate:a) The concentration oforciprenaline in the diluted solutionin mg/L b) The actual amount oforciprenaline (in mg) in the powderassayed.c) The actual amount oforciprenaline (in mg) per tablet.d) The percentage of stated contentof per tablet.