How much moles of precipitate was formed? * Probable atomic weights: Ca = 40; C = 12; 0 = 16 Your answer How many moles of calcium are in calcium oxalate? * Your answer * What is the mass (g) of calcium ions in the sample? * Your answer What is the percentage of calcium in the original limestone sample? * Use the COMPLETE computed value for E to compute for the percentage.

Q: She fills a reaction vessel with H3PO4 and measures its concentration as the reaction proceeds: time…

A:

Q: A solution of 0.25 M potassium hydroxide, KOH is added from a burette to a flask containing 25.0 mL…

A: For given pH curve , incorrect statement is to be determined,

Q: But-2-ene-1-thiol is a component of skunk spray. How would you synthesize this substance from…

A: Under acidic condition nucleophile attacks on greater substituted carbon of epoxide while under…

Q: cell phone emits a radio signal with a frequency of 1.910 x 10^9 Hz. Determine the wavelength

A: Frequency is inversely proportional to wavelength

Q: _CH=CH₂ _CH=CH₂ and CH3O 0₂N₁ A B Which will be true about the reaction of the two alkenes with HBr?

A: ->The reaction of alkene with HBr proceeds through formation of carbocation intermediate.Hence ,…

Q: A CHO B CHO H с and H H OH D CHO E CHO OH F CHO

A: ->In crossed Aldol reaction two different carbonyl compounds are given . And base can abstract…

Q: for the reaction NH3 C991+ H20 (1) - Nhu caalt of cour which of the following is a conjugate…

A: When base accept a proton it forms conjugate acid and when acid donates a proton it forms conjugate…

Q: 1. Which carbonyl group of the given compound is most reactive for nucleophilic addition reaction?…

A: For nucleophilic addition reaction more electrophilic center is required. After attach on any…

Q: Draw a stepwise detailed reaction mechanism for the following reaction. HO + CgHsCHO H20 + `OH

A:

Q: Which is the correct increasing order of reactivity towards electrophilic substitution among the…

A: Electrophilic substitution reaction involves substitution of one H from benzene ring by an…

Q: Why does water often cause changes to various experiments?

A:

Q: Chemistry For 2g of 150ml of CaBr2 Find and show work for: 1. %mass/volume concentration 2. Molarity…

A: Let us have another combination   molecule = CaBr2 , Mass = 1 g , Volume of solution = 150 mL   The…

Q: sample of gas at 1045.9 mmHg and 21.64 degree celsius has the pressure increase to 159.59 kPa. What…

A: Pressure is directly proportional to temperature

Q: What are some of the analytes typically analyzed using  reverse-phase ion-pairing chromatography

A: The detailed answer of the given question is as under:  OLIGONUCLEOTIDES are short, single or double…

Q: True or False. Support your answers. a. For every cyclic process, the final state of the system is…

A:

Q: 3. How many moles of NaCl are in 1.85 L of a 0.458M NaCl solution?

A:

Q: 27. Ksp(Cd(OH):(s)) = 6.4 x 10-15. Which of the following processes will DECREASE the solubility of…

A: Here we have to predict which of the following conditions will decrease the solubility of Cd(OH)2 .

Q: What are the similarities between fluorescence detectors in HPLC and chemiluminescence detectors in…

A: Chromatography detectors are used to detect compounds that are eluted from the chromatography…

Q: 9. What are two factors that affect the kinetics of chemical reactions and were tested in the lab?…

A:

Q: A gas has a volume of 42.3 mL at 24.0 °C. What is its volume at 102 °C? 33.5 mL 9.95 mL 180. mL 53.4…

A: The volume can be calculated using charle's law

Q: 18. The thermochemical equation for the formation of ammonia from nitrogen and hydrogen is as…

A: Le Chatelier's principle: This principle is used to predict the effect of a change in conditions on…

Q: The following are intermediate products in the stepwise synthesis of compound 1 from benzene. Give…

A: The answer is as follows:

Q: Give the balanced chemical equation of the following reaction. Al203 + Cr203

A: The balanced equation is given below

Q: 47) Combination of two p-atomic orbitals give two molecular orbitals. Show the possible two…

A:

Q: 19. When thioacetamide (CH3CSNH2) is added to a solution with Cd²* at pH-0.5, which of the following…

A:

Q: What is the half-life (seconds) of a reaction that has a rate constant, k = 0.00554 M/s where the…

A:

Q: What is true when acids and bases neutralize each other? O The amount of H* and OH is the same O The…

A: When acid is react with base it will form salt and water called neutralization

Q: At what position, and on what ring, would you expect the following substances to undergo…

A: ✓Given reaction is an example of electrophilic substitution reaction.An electrophilic substitution…

Q: MON TUE WED THU FRI SAT SUN Brom-3-methylpenbare has three isomers 7 - Bromo-3-methylppent- ane…

A:

Q: Which are true about the Meisenheimer complex? Select the correct response(s): It is positively…

A: A meisenheimer complex is negatively charged intermediate formed by attack of a nucleophile upon one…

Q: The work function for silver is about 3.5 eV. What is the energy in joules for the work function?…

A: To convert the work function from eV to joules, we use the conversion factor 1 eV = 1.602 x 10-19 J

Q: differences

A: Both are the types of the liquid chromatography which are used to seperate the different components…

Q: Determine the enthalpy of reaction: 2NH3(g) + 2CH4(g) + 302(g) → 2HCN(g) + 6H₂O(l) Reactions…

A: We can calculate enthalpy of reaction by reversing reaction 1 and 2 and add equation 1,2,3 and 4…

Q: An experiment was conducted to measure the standard reduction potential, Ered of magnesium, Mg (s)…

A:

Q: 2. Draw the product of the reaction of cyclopentanone with each of the following reagents: a.…

A: The correct answer is given below

Q: 26) The molecule below is OCH3 OCH, A) Curcumin from turmeric B) Pterostilbene from blueberries C)…

A:

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

A: Plasma Osmolality

Q: 2. Consider the reaction that occurs when a CIO2 solution and a solution containing hydroxide ions…

A: Given :-  The given reaction is  2ClO2 (aq) + 2OH- (aq) → ClO3- (aq) + ClO2- (g) + H2O (l)  The…

Q: Select all of the combinations that would produce a buffer solution.     KClO3 and HClO2…

A: Buffer solution has tendency to maintain constant pH upon small amount of addition of acid or base.…

Q: Which of the following orbitals doesn't exist. 7f 7p 3p or 4s

A: Orbital are region in the  space where probality of finding electron is maximum. 7f, 7P, 3p, 4s,…

Q: What is the role of Glycerin in the assay of Boric Acid? I. The reagent prevents the formation of…

A:

Q: Chiorine exists in natute aga mixture ot stable isotopes ,cl-35 and ct-37:74 the atomic magg of…

A:

Q: What is the diffusion coefficient of Zinc in Copper at 750degC? * 5.3241x10-¹² m²/s 5.3241x10-1³…

A: For Zinc in Copper,  We have D0=2.4×10-5m2/s,Qd=189000J/mol Given…

Q: Calculate the concentration of OH- and the pH of a solution that is 0.20 M in aqueous NH3 and 0.10 M…

A: Solutions                              Given that Calculate the concentration of OH- and the pH of…

Q: Which arrow would be present in a reaction where K 1.15? Off None of the above

A: K is the ratio of product of products concentration to the product of reactants concentration.  So…

Q: Chemistry The formal charges for all of the atoms in SiBr4 are A. 0, 0, 0, 0, 0 B. +1,-1,-1, 0, 0 C.…

A:

Q: what is the pOH of 5.6 x 10^-4M HCI

A: Given that:  [HCl] = 5.6×10-4M HCl is strong acid.

Q: Draw the structure of the following tripeptide as it will occur at pH 7 N-Lys, Val , Glu-C

A: The peptide  contains amino acids lysine valine glutamic acid

Q: (j). An acetate buffer contains 50.0 millimolar (mM) acetic acid and 35.0 mM sodium acetate. (i)…

A: Here we are required to find the pH change when acid and Base are added to the buffer solution

Q: 1) How does temperature affect the lifetime of a battery, would it affect the battery to be…

A: 1. Answer - According to the question - High ambient temperature is the most important factor that…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".