Chemistry concepts and calculations
117302 questions • Page 278 / 2347
3. Write the balanced net ionic equation for the reaction that occurs when NaCl
3. Write the balanced net ionic equation for the reaction that occurs when NaCl and AgNO3 are mixed. 4. Write the balance net ionic equation for the reaction that occurs when some…
3. Write the name of the element corresponding to each characteristic line provi
3. Write the name of the element corresponding to each characteristic line provided to the right of the characteristic. a.) the element with the electronic configuration 1s22s22p6…
3. You are asked to select and size reactors to carry out an isothermal liquid-p
3. You are asked to select and size reactors to carry out an isothermal liquid-phase, irreversible reaction A-->B with the following kinetics: -rA = k(CA)n [where n=1 and with …
3. You are given an aqueous solution and are asked to analyze it for the presenc
3. You are given an aqueous solution and are asked to analyze it for the presence (or absence) of Ag (aq), Ca? (ag), and/or Hg*(aq) ions. There are no other metal ions in the solu…
3. You are given an aqueous solution and are asked to analyze it for the presenc
3. You are given an aqueous solution and are asked to analyze it for the presence (or absence) of Ag (aq), Ca? (ag), and/or Hg*(aq) ions. There are no other metal ions in the solu…
3. You are given the following standard enthalpies of formation at 25°C. HF (aq)
3. You are given the following standard enthalpies of formation at 25°C. HF (aq) OH (aq) F (aq) -320.1 kJ/mol -229.6 kJ/mol -329.1 kJ/mol -285.8 kJ/mol a. Calculate the standard e…
3. You are required to make 100 ml of a 10 M KCI solution using a previously pre
3. You are required to make 100 ml of a 10 M KCI solution using a previously prepared 1 X 10 M stock. Detail how you would go about this showing all calculations. 4. Calculate the…
3. You have isolated a novel proteolytic enzyme and are analyzing the cleavage p
3. You have isolated a novel proteolytic enzyme and are analyzing the cleavage properties of the purthed pro tein. You analyze the ability of the enzyme to catalyze cleavage of pe…
3. You have isolated a novel proteolytic enzyme and are analyzing the cleavage p
3. You have isolated a novel proteolytic enzyme and are analyzing the cleavage properties of the purthed pro tein. You analyze the ability of the enzyme to catalyze cleavage of pe…
3. You should include the following definition in your module: Solve the followi
3. You should include the following definition in your module: Solve the following problems by defining appropriate relations. a. Include the following definitions in your code: D…
3. You titrate 125 mL of a solution of ammonia (NH3) with 1.0 M HClO4. The equiv
3. You titrate 125 mL of a solution of ammonia (NH3) with 1.0 M HClO4. The equivalence point is reached after adding 25 mL of the titrant. a.) What kind of titration was this (WA/…
3. You want to convert 350 mg (Z)-hex-3-ene to hex-3-yne. Answer the following q
3. You want to convert 350 mg (Z)-hex-3-ene to hex-3-yne. Answer the following questions pertaining to the planned experiment. a) Suggest a synthetic strategy that you might use f…
3. You wish to prepare a buffer solution containing NaN 3 and HN 3 (hydrazoic ac
3. You wish to prepare a buffer solution containing NaN3 and HN3 (hydrazoic acid). You have to prepare the solutions first. a. 187 g of sodium azide is dissolved in water to make …
3. Your boss asks you to isothermally carry out a liquid-phase, irreversible rea
3. Your boss asks you to isothermally carry out a liquid-phase, irreversible reaction AB with the following rate law: with k 0.20 L(mol*min)" a. Starting with a mole balance (&…
3. Your coworker is analyzing a NIST soil standard for Nickel by atomic spectros
3. Your coworker is analyzing a NIST soil standard for Nickel by atomic spectroscopy and finds recovery to be 145.9%. After freaking out over the poor results, she adds a 10.0 ppb…
3. Your coworker is analyzing a NIST soil standard for Nickel by atomic spectros
3. Your coworker is analyzing a NIST soil standard for Nickel by atomic spectroscopy and finds recovery to be 145.9%. After freaking out over the poor results, she adds a 10.0 ppb…
3. [8 Points] A treatability study is conducted to investigate the rate at which
3. [8 Points] A treatability study is conducted to investigate the rate at which pentachlorophenol (PCP) can be removed from water. PCP is a common wood preservative and is toxic …
3. [Intro. analytical chemistry] - please solve and show work / explanations 3.
3. [Intro. analytical chemistry] - please solve and show work / explanations 3. 18 points] The Department of Health and Human Services recently announced a change in the recommend…
3. a) Calculate the concentration of a new solution prepared by dissolving 1.5 m
3. a) Calculate the concentration of a new solution prepared by dissolving 1.5 mL of 2.5 M HCI in 48.5 mLf distilled water (50.0 mL final volume). (3 pts) Calculate the pH of the …
3. a) Multiphoton laser ionization is a process in which a high power laser indu
3. a) Multiphoton laser ionization is a process in which a high power laser induces ionization of a molecule by causing it to absorb many identical photons at the same time and po…
3. a) Multiphoton laser ionization is a process in which a high power laser indu
3. a) Multiphoton laser ionization is a process in which a high power laser induces ionization of a molecule by causing it to absorb many identical photons at the same time and po…
3. a. A one way set associative cache has a total size of 64 bytes with 2 bytes/
3. a. A one way set associative cache has a total size of 64 bytes with 2 bytes/block. Find i. the mapping of main memory address 2EF4 H into cache. (3 pts.) the tag (2 pts) b. A …
3. a. E. coli cell lacks the posttranslational modification machinery, so it is
3. a. E. coli cell lacks the posttranslational modification machinery, so it is difficult to produce the eukaryotic glycoprotein in E. coli with conventional vectors. Glycosylated…
3. a. Enzyme X is a muscle enzyme that catalyzes the following reaction: A -> B
3. a. Enzyme X is a muscle enzyme that catalyzes the following reaction: A -> B The turnover number (catalytic rate constant kcat) for the reaction is 50 sec-1 . How long does …
3. a. In Part C of this lab, you will measure the mass of several different item
3. a. In Part C of this lab, you will measure the mass of several different items, in grams (g). What are the two types of balances you will use to measure mass? b. An empty beake…
3. a. In Part C of this lab, you will measure the mass of several different item
3. a. In Part C of this lab, you will measure the mass of several different items, in grams (g). What are the two types of balances you will use to measure mass? b. An empty beake…
3. a. Is commercial green food color the same as a mixture of yellow and blue fo
3. a. Is commercial green food color the same as a mixture of yellow and blue food colors, i.e.. exactly the same number and colors of resolved spots? b. If not, how is the mixtur…
3. a. The data were recorded in determining the molar mass of a volatile liquid
3. a. The data were recorded in determining the molar mass of a volatile liquid following the Experimental Procedure of this experiment. Complete the table for (See Report Sheet.)…
3. a. The thermal decomposition of 2.076 g of Mgso, H2O produces 1.812 g of a pr
3. a. The thermal decomposition of 2.076 g of Mgso, H2O produces 1.812 g of a product in a well-behaved reaction. There are two possibilities: MgSos.HO(sMgSOg(s) + H-0g) +MgO(s) S…
3. a. The thermal decomposition of 2.076 g of Mgso, H2O produces 1.812 g of a pr
3. a. The thermal decomposition of 2.076 g of Mgso, H2O produces 1.812 g of a product in a well-behaved reaction. There are two possibilities: MgSos.HO(sMgSOg(s) + H-0g) +MgO(s) S…
3. a. Using the data given, calculate each significant figures. of the thermodyn
3. a. Using the data given, calculate each significant figures. of the thermodynamic quantities for Pbs dissolving in water at 25°C (use 298.15 K). Calculate and report each to 3 …
3. calculate the following quantities a. mass in grams of 1.223 mol Fe2(SO4)3 b.
3. calculate the following quantities a. mass in grams of 1.223 mol Fe2(SO4)3 b. moles of NH4+ ions in 6.995 g of (NH4)2CO3 c. mass in grams of 7.70 x 10^20 molecules of aspirin ,…
3. in step 4 of the procedure to standardize the EDTA solution, a student forget
3. in step 4 of the procedure to standardize the EDTA solution, a student forgets to rinse the buret with a Small portion of EDTA solution.(The buret contains water droplets from …
3. in the processor area you might also find prototypes. such as: void ouch ();
3. in the processor area you might also find prototypes. such as: void ouch (); void ouch (int b, short e); a) explain why prototypes are necessary and what they do. b) explain wh…
3. m 30 Two metal spheres, suspended by vertical cords, initially just touch. Sp
3. m 30 Two metal spheres, suspended by vertical cords, initially just touch. Sphere 1, with mass & is pulled to the left to a height h, 8.0 cm, and then released from rest. A…
3. one of Santa\'s reindeer is put on disability and transferred from the North
3. one of Santa's reindeer is put on disability and transferred from the North Pole to San Diego Zoo. The winter average temperature in the North Pole is -34 degrees C. The averag…
3. organic (carbon containing) compounds: For the following vitmains, fill in th
3. organic (carbon containing) compounds: For the following vitmains, fill in the following data including your reference letter for each piece of data, as you may need to look in…
3. the supernatant is colorless after the addition of the additional 2 drops of
3. the supernatant is colorless after the addition of the additional 2 drops of conc nh3 what can you conclude? Experiment 39 Qual II. Ni2+, Fe3+ 3+ 2+ Nickell) ions precipitates.…
3. true or false (one point each) For the same material with allotropic behavior
3. true or false (one point each) For the same material with allotropic behavior of BCC and FCC, like Fe, it has a larger mass density when it takes a close-packed crystal structu…
3. using the Txy or Pxy diagram provided, answer the following questions. the a.
3. using the Txy or Pxy diagram provided, answer the following questions. the a. For a 50:50 mixture of benzene and toluene, what is b. For a 40% toluene vapor at 100°C what is th…
3.(12 pts) You have an aqueous solution of sodium acetate (NaCH CO2) that has a
3.(12 pts) You have an aqueous solution of sodium acetate (NaCH CO2) that has a concentration of 3.65 M and a density of 1.16 g/mL. (a) What volume (in mL) of this solution is nee…
3.(20%) A 1.000-g steel sample was analyzed for its Cr and Mn content by dissolv
3.(20%) A 1.000-g steel sample was analyzed for its Cr and Mn content by dissolving the sample in concentrated nitric acid, adding concentrated sulfuric and phosphoric acids, and …
3.(3) The hal-life of ytterbium-169 is 32.0 days. How long will i take for a 2.5
3.(3) The hal-life of ytterbium-169 is 32.0 days. How long will i take for a 2.50 g sample to decay until 0200 grams of the remains? isotope a) Which type of radiation has the gre…
3.(30pts) A buffer is prepared by mixing 100 mL of 0.800 M formic acid (HCOOH),
3.(30pts) A buffer is prepared by mixing 100 mL of 0.800 M formic acid (HCOOH), a monoprotic acid, with 200 mL of 0.100 M sodium formate (NaHCOO). Ks of formic acid 1.7 x 104 at 2…
3.) (4 points) A chemist performs a melting point analysis on an unknown purple
3.) (4 points) A chemist performs a melting point analysis on an unknown purple compound and finds that it melts between 134.4-136°C. The chemist concludes that the purple compoun…
3.) (4 points) A chemist performs a melting point analysis on an unknown purple
3.) (4 points) A chemist performs a melting point analysis on an unknown purple compound and finds that it melts between 134.4-136°C. The chemist concludes that the purple compoun…
3.) 15.0 mL of 0.309 M Na SO4 and 35.6 mL of 0.200 M KCI are mixed. Determine th
3.) 15.0 mL of 0.309 M Na SO4 and 35.6 mL of 0.200 M KCI are mixed. Determine the following concentrations: [Na']; [So.]; [CI] tha 5) A 40% acid solution is mixed with a-75% acid …
3.) A. Identify the type of molecular geometry of three electron pairs about a c
3.) A. Identify the type of molecular geometry of three electron pairs about a central atom (in which the central atom has no lone pairs). B. Identify the type of molecular geomet…
3.) A.) Give the IUPAC name for compound a B.)Give any common name for the compo
3.) A.) Give the IUPAC name for compound a B.)Give any common name for the compound a. (If the compound has only the IUPAC name, enter no) C.)Give the IUPAC name for the compound …
3.) Account for each of the following in terms of principles of atom structure,
3.) Account for each of the following in terms of principles of atom structure, including the number, properties, and arrangement of subatomic particles. a.) the second Ionization…
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