Chemistry concepts and calculations
117302 questions • Page 2004 / 2347
When radioactive waste is discussed in the news media, half-lives of waste produ
When radioactive waste is discussed in the news media, half-lives of waste product are often cited in such a way as to give the impression that the longer the half-life, the freat…
When recrystallizing the product 120 mL of boiling water was used. The question
When recrystallizing the product 120 mL of boiling water was used. The question is, why was 120 mL used? What happened if 60 or 200 mL were used inseatd? How would have it figure …
When red blood cells are placed in an hypotonic solution. water flows out of the
When red blood cells are placed in an hypotonic solution. water flows out of the red blood cells. water flows inside the red blood cells. there is no net flow of water. the cells …
When removing the solvent from your product, it is stated that when the flask no
When removing the solvent from your product, it is stated that when the flask no longer felt cool. the evaporation process was complete. Why does the flask feel cool while evapora…
When removing the solvent from your product, it is stated that when the flask no
When removing the solvent from your product, it is stated that when the flask no longer felt cool. the evaporation process was complete. Why does the flask feel cool while evapora…
When reporting algorithmic complexity of an algorithm, one assumes the underlyin
When reporting algorithmic complexity of an algorithm, one assumes the underlying computations are performed on some abstract machine (e.g. RAM) that approximates a modern CPU. Su…
When reporting algorithmic complexity of an algorithm, one assumes the underlyin
When reporting algorithmic complexity of an algorithm, one assumes the underlying computations are performed on some abstract machine (e.g. RAM) that approximates a modern CPU. Su…
When rinsing your pipette to clean it, should you do your final rinse using wate
When rinsing your pipette to clean it, should you do your final rinse using water? If not, what should you The volume of which physical state solid, liquid or gas is most affected…
When running a code, it says that it \"stopped working\", can someone tell me wh
When running a code, it says that it "stopped working", can someone tell me what I did wrong please? I am supposed to be able to plug in a temperature and pressure and using linea…
When s-2-bromobutane undergoes an SN2 reaction with CH3O-, the product is the co
When s-2-bromobutane undergoes an SN2 reaction with CH3O-, the product is the compound shown below. What is/are the configurations of the products obtained? CH3CH2CH(OCH3)CH3 When…
When salts dissolve in H2O, my understanding is that the electrovalent bond is b
When salts dissolve in H2O, my understanding is that the electrovalent bond is broken, since the H2O molecules are strongly attracted to the positive and negative ions of the salt…
When salts such as NaCI are added to water, they dissolve and dissociate into io
When salts such as NaCI are added to water, they dissolve and dissociate into ions. NaCI dissolves to Na+ and Cl". Similarly, CH_3NH_3NO-3 is a salt so when it is added to water, …
When salts such as NaCl are added to water, they dissolve and dissociate into io
When salts such as NaCl are added to water, they dissolve and dissociate into ions. NaCl dissolves to Na^+ and Cl^-. Similarly, CH_3NH_3NO_3 is a salt so when it is added to water…
When scuba diving, it is important to come back to the surface of the water from
When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the "bends." a.) Using Henry's …
When scuba diving, it is important to come back to the surface of the water from
When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the “bends”. Using the informat…
When scuba diving, it is important to come back to the surface of the water from
When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the “bends”. Using the informat…
When searching graphs, there are two easy algorithms: breadth-first and depth-fi
When searching graphs, there are two easy algorithms: breadth-first and depth-first (Usually done by adding all adjactent graph nodes to a queue (breadth-first) or stack (depth-fi…
When searching graphs, there are two easy algorithms: breadth-first and depth-fi
When searching graphs, there are two easy algorithms: breadth-first and depth-first (Usually done by adding all adjactent graph nodes to a queue (breadth-first) or stack (depth-fi…
When seeking to confirm that a new solid phase had been produced, XRPD was used
When seeking to confirm that a new solid phase had been produced, XRPD was used to examine the two solid phases. The result of XRPD is shown in Figure 3 below: T-258% a) phase 1 D…
When sending copper metal through a cycle of reactions, it Is most Important to
When sending copper metal through a cycle of reactions, it Is most Important to have an idea how much of any given reagent is needed to bring each step of the cycle of reactions t…
When sending copper metal through a cycle of reactions, it is most important to
When sending copper metal through a cycle of reactions, it is most important to have an idea how much of any given reagent is needed to bring each step of the cycleof reactions to…
When setting a value to a variable inside of a class most of the time we are pre
When setting a value to a variable inside of a class most of the time we are presented with two options: private string myValue; public string MyValue { get { return myValue; }…
When setting up the condenser, adjust the cooling water flow so that: it flows i
When setting up the condenser, adjust the cooling water flow so that: it flows in the bottom and out the top of condenser, at a maximum flow rate. it flows in the top and out the …
When should you put Key/Value type of data in it\'s own class instead of using a
When should you put Key/Value type of data in it's own class instead of using a pre-built generic structure, such as a KeyValuePair or a Tuple? For example, most ComboBoxes I crea…
When silver nitrate is reacted with the molecular base ortho -phenanthroline, co
When silver nitrate is reacted with the molecular base ortho-phenanthroline, colorless crystals form that contain the transition-metal complex shown below. Part A) What is the coo…
When six protons and six neutrons unite to form a carbon atom,the net mass of th
When six protons and six neutrons unite to form a carbon atom,the net mass of the 12 nuclides decreases slightly. This _______multiplied by ________ equals the nuclear binding ene…
When sodium chloride dissolves in water, how do the water molecules orient aroun
When sodium chloride dissolves in water, how do the water molecules orient around the ions? Water molecules are randomly oriented around the ions. The hydrogen atoms point toward …
When sodium chloride dissolves in water, how do the water molecules orient aroun
When sodium chloride dissolves in water, how do the water molecules orient around the ions? a. Water molecules are randomly oriented around the ions. b. The hydrogen atoms point t…
When sodium chloride is added to a saturated solution of lead(II) chloride, some
When sodium chloride is added to a saturated solution of lead(II) chloride, some of the lead(II) chloride precipitates. That phenomenon is called__the common ion effect. selective…
When sodium chloride, NaCl, is added to a solution of silver nitrate, AgNO 3 , a
When sodium chloride, NaCl, is added to a solution of silver nitrate, AgNO3, a white precipitate of silver chloride, AgCl, forms. If concentrated ammonia, NH3, is added to this pr…
When sodium sulfate is added to a saturated solution of barium sulfate, some of
When sodium sulfate is added to a saturated solution of barium sulfate, some of the barium sulfate precipitates. This phenomenon is called _____ supersaturation. the common ion ef…
When software forces a user to verify online(Phone Home) before use, it creates
When software forces a user to verify online(Phone Home) before use, it creates an opportunity for private data created with this software to be physically connected to the Intern…
When solid NH4HS is placed in a closed flask at 28 celsius the solid disscoates
When solid NH4HS is placed in a closed flask at 28 celsius the solid disscoates according to the equation: 16. When solid HAHs is placed in a closed flask at 28°C, the solid disso…
When solid Pb metal is put into an aqueous solution of Cu(NO_3)_2 solid Cu metal
When solid Pb metal is put into an aqueous solution of Cu(NO_3)_2 solid Cu metal and a solution of Pb(NO_3)_2 result. Write the net ionic equation for the reaction (Use the lowest…
When solid ammonium chloride, NH 4 Cl, is added to excess water, a solution form
When solid ammonium chloride, NH4Cl, is added to excess water, a solution forms and the temperature of the system decreases. In a certain experiment, 0.10 mole of NH4Cl is added t…
When solid ammonium nitrate (NH_4NO_3) dissolves in water, the temperature of th
When solid ammonium nitrate (NH_4NO_3) dissolves in water, the temperature of the water can drop dramatically. Taking NH_4NO_3 as the system, predict the signs of the entropy chan…
When solid calcium chloride was added (tubes 3 and 4), the equilibrium shifted t
When solid calcium chloride was added (tubes 3 and 4), the equilibrium shifted toward the left side. When solid calcium nitrate was added (tube 5) no change in equilibrium positio…
When solid iron(II) hydroxide is added to water, the resulting solution contains
When solid iron(II) hydroxide is added to water, the resulting solution contains 1.4 times 10^-1 g of dissolved iron(ll) hydroxide per liter of solution. What is the hydroxide ion…
When solid magnesium is reacted with an aluminum phosphate solution, metallic al
When solid magnesium is reacted with an aluminum phosphate solution, metallic aluminum is produced by single displacement (equation. a): (a) AlPO4(aq)+Mg(s)Al(s)+Mg3(PO4)2(aq) Bal…
When solid magnesium is reacted with an aluminum phosphate solution, metallic al
When solid magnesium is reacted with an aluminum phosphate solution, metallic aluminum is produced by single displacement (equation. a): (a) AlPO4(aq)+Mg(s)Al(s)+Mg3(PO4)2(aq) B…
When solid magnesium is reacted with an aluminum phosphate solution, metallic al
When solid magnesium is reacted with an aluminum phosphate solution, metallic aluminum is produced by single displacement (equation. a): (a) AlPO4(aq)+Mg(s)Al(s)+Mg3(PO4)2(aq) B…
When solid sodium bisulfate is added to a solution of sodium bisulfate and thymo
When solid sodium bisulfate is added to a solution of sodium bisulfate and thymol blue indicator, which way would the equilibrium shift? Shift toward the reactants Shift toward th…
When solid sodium hydroxide (NaOH) pellets are dissolved in water, the temperatu
When solid sodium hydroxide (NaOH) pellets are dissolved in water, the temperature of the water and beaker rises. This is an example of a. an exothermic process b. an endothermic …
When solid sodium hydroxide (NaOH) pellets are dissolved in water, the temperatu
When solid sodium hydroxide (NaOH) pellets are dissolved in water, the temperature of the water and beaker rises. This is an example of a. an exothermic process b. an endothermic …
When solution containing 1.00 g of BaCl 2 and 1.00 gof Na 2 SO 4 were mixed, sol
When solution containing 1.00 g of BaCl2 and 1.00 gof Na2SO4 were mixed, solid BaSO4formed. The BaSO4 precipitate was filtered out of thesolution, allowerd to dry, and then weighe…
When solutions containing 1.00 g of BaCl 2 and 1.00 g of Na2SO4 were mixed, soli
When solutions containing 1.00 g of BaCl2 and 1.00 g of Na2SO4 were mixed, solid BaSO4 formed. The BaSO4 precipitate wasfiltered out of the solution, allowed to dry, and then weig…
When solutions containing Fe3+(aq) ions and SCN-(aq) ions are mixed together, th
When solutions containing Fe3+(aq) ions and SCN-(aq) ions are mixed together, the following equilibrium is established: Fe3+(aq) + SCN-(aq) <-> FeSCN2+(aq) At equilibrium at…
When solutions of NaCl and AgNO3 are mixed, a precipitate of AgCl forms. no prec
When solutions of NaCl and AgNO3 are mixed, a precipitate of AgCl forms. no precipitate forms. a precipitate of AgCl2 forms. precipitate of NaNO3 and AgCl form. a precipitate of N…
When solutions of barium chloride and lithium sulfate are mixed, t the reaction
When solutions of barium chloride and lithium sulfate are mixed, t the reaction are he spectator ions in A) Li and Cl. B) Li and Ba2* C) Cl and SO42 D) No spectator ions. E) Ba2 a…
When solutions of silver nitrate and calcium chloride are mixed, silver chloride
When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation 2AgNOx (aq) + CaC12 (aq)–2AgCl(s) + Ca(NOx)…
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