Chemistry question and answers for September 17, 2023
- Q difference between vanilla extract and artificialvanilla
- Q Calculate the pH of the resulting solution if 35.0 mL of 0.350 MHCl(aq) is added to(a) 45.0 mL of 0.350 M NaOH(aq).pH=(b) 25.0 mL of 0.450 M NaOH(aq).pH=
- Q Chapter 19, Question 2Determine the oxidation state of thetransition metal in each compound.a) NiSO4b) KMnO4c) (NH4)2WO4d) What is the oxidation state of Pb in PbCrO4?e) What is the oxidation state...
- Q what is the boiling point of Hoveyda-Grubbs 2ndGeneration Catalyst?
- Q The magnesium in a series of soil samples was characterized byatomic absorption spectrometry (AAS). The instrument was calibratedwith a series of standards: 0, 50.00, 100.00, 250.00 mg/LMgSO47H2O. These samples produced...
- Q What is the identity of 51g of a gas in a 24.5L container at25.0oC and 1.5atm?H2SH2ON2C2H6
- Q Write a balanced equation for the oxidation of Co(II) to Co(III)by hydrogen peroxide. Why is this oxidation process assisted by thepresence of ammonia?
- Q PLease Answer all parts of the following:a) The recommended daily allowance of calcium for men betweenthe ages of 19 to 50 is 1 000 mg Ca. Three multivitamin tablets areanalyzed...
- Q 100 mL of a saturated solution of magnesium palmitate,Mg(C16H31O2)2, is prepared at 25 °C. The Ksp is 3.3 × 10^-12 . Tothis solution is added 0.015 g of magnesium palmitate...
- Q There are two possible methods for recovering copper from asolution of copper (II) sulfate, one uses precipitation and theother uses redox.Copper(II) ions can be precipitated as copper(II) carbonate.CuSO4(aq) +Na2CO3(aq) →CuCO3(s)...
- Q Calculate the theoretical and percent yield. What is thelimiting reagent?Reaction: 4-bromoacetanilide from acetanilide in Br2 andAcOH4.27 g acetanilide4.78 mL bromine solution15.93 mL glacial acetic acidproduct: 0.24 g 4-bromoacetanilide
- Q Methane is a clean gaseous fuel used in chemical industriesworldwide. 1000 kmol/hr of methane is combusted in a burner toprovide heat. The combustion reaction is:CH4 + O2 Ã CO2 +...
- Q 2. Which mechanistic types can undergo a reaction on a primarycarbon?a) E1b) Sn2c) Sn1d) E2
- Q A 1.268 g sample of a metal carbonate (MCO3)was treated with100.00 mL of 0.1083 M sulfuric acid (H2SO4), yielding CO2 gas andan aqueous solution of the metal sulfate (MSO4). The...
- Q Question 7 (1 point)When zinc is reacted with copper (II) chloride to produce zincchloride and copper, which element (if any) is oxidized? Whichelement (if any) is reduced?Question 7 options:123Chlorine123Zinc123Copper1.Oxidized2.Reduced3.Neither oxidized...
- Q Describe the process of protein synthesis starting with DNA inthe nucleus and ending with proteins released from the ribosomes.Include the role of the DNA, mRNA, tRNA, rRNA and amino acids.
- Q 6) Calculate the wavelength of an electron, in pm, when itsvelocity is 2.9978 x 106 m/s.
- Q calculate the mass defect and nuclear binding energy per nucleon(in mev) for c-16, a radioactive isotope of carbon with a mass of16.014701 amu.
- Q At the end of 2012, global population was about 7.0billion people. What mass of glucose inkg would be needed to provide 1500cal/person/day of nourishment to the global population forone year?...
- Q Gold has a density of 19.3 g/cm^3. Current price is $1192 pertroy ounce. What is the value of a cube of a gold with a sidelength of 1 inch? (1...
- Q A digital watch draws 0.230 mA of current provided by a batterywhose net reaction is:HgO(s) + Zn(s) ----> ZnO(s) + Hg(l)If a partially used battery contains 0.350 gm each of...
- Q HOT COFFEE:Your breakfast restaurant needs to buy a container to holdcoffee. Generally, restaurants wish to have container that caneither quickly cool the coffee to a drinkable range, and/or keepthe coffee...
- Q If we have a mixture of sodium carbonate and sodium hydroxide,what procedure allows us to tell that they are both present?Based on your results which measurement do you think will...
- Q After a certain H atom emits a 3740 nm photon, the energy of itselectron is -8.716 x 10-20 J. What was the electron's energy beforephoton emission, and what level did...
- Q 1)Calculate the molarity of each of the following solutions.0.30 mol of LiNO3 in 6.32 L of solutionExpress your answer using two significant figures.2)What is the net ionic equation of the...
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