Chemistry concepts and calculations

What volume of 0.407 M KOH is just sufficient to reactcompletely with 3.16 g cop

What volume of 0.407 M KOH is just sufficient to reactcompletely with 3.16 g copper (II) sulfate pentahydrate accordingto the equation below. The hydrate dissolves as the KOH is a…

What volume of 0.5 M NaOH is needed to perform the titration of 30 mL of 0.1 M H

What volume of 0.5 M NaOH is needed to perform the titration of 30 mL of 0.1 M H3PO4? Question options: a) V = 12 mL b) V = 6 mL c) V = 18 mL d) V = 30 mL he pH at the equivalence…

What volume of 1.00 M HCl is required to completely react with 25.0 mL of 0.700

What volume of 1.00 M HCl is required to completely react with 25.0 mL of 0.700 M NaOH according to the equation HCl(aq) + NaOH(aq) -> NaCl(aq) + H2O(l)? Select one: 1. 35.7 mL…

What volume of 1.20 M nitric acid is needed to convert 5.5 g of m- chlorophenol

What volume of 1.20 M nitric acid is needed to convert 5.5 g of m- chlorophenol to 3-chloro-2, 6-dinitrophenol? (No excess of nitric acid is used.) In your experiment, you made qu…

What volume of 10.0 M NaOH is needed to prepare a buffer with a pH of 7.79 using

What volume of 10.0 M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCI? Express your answer in milliliters using two significant figures ± Preparation…

What volume of 12.0 M HCI must be used to prepare 250 mL of 5.50 M HCI? What is

What volume of 12.0 M HCI must be used to prepare 250 mL of 5.50 M HCI? What is the Molarity of a sample of NaOH if a titration requires 35.0 mL of 4.00 M HCI to neutralize 25.0 m…

What volume of CO 2 (g) will be formed when 2.0 g CaCO 3 (s) is heated and the g

What volume of CO2(g) will be formed when 2.0 g CaCO3(s) is heated and the gas is collected at 700 mm pressure and 20 oC? The reaction is: CaCO3(s) CaO(s) + CO2(g) A. 0.44 L      …

What volume of Cl2 gas, measured at 687 torr and 39 C, is required to form 23 g

What volume of Cl2 gas, measured at 687 torr and 39 C, is required to form 23 g of NaCl? Express your answer using two significant figures. A sample of gas in a balloon has an ini…

What volume of a 0.132 M potassium hydroxide solution is required to neutralize

What volume of a 0.132 M potassium hydroxide solution is required to neutralize 15.6 mL of a 0.327 M hydrobromic acid solution? A 13.2 g sample of an aqueous solution of perchlori…

What volume of a 0.500 M hydrochloric acid solution is needed to neutralize each

What volume of a 0.500 M hydrochloric acid solution is needed to neutralize each of the following, respectively: a) 10.00 mL 0.300 M sodium hydroxide ; b) 10.00 mL 0.200 M barium …

What volume of a 0.500 M hydrochloric acid solution is needed to neutralize each

What volume of a 0.500 M hydrochloric acid solution is needed to neutralize each of the following, respectively: a) 10.00 mL 0.300 M sodium hydroxide ; b) 10.00 mL 0.200 M barium …

What volume of a 0.716 M KBr solution is needed to provide 10.5 g of KBr? a. 7.5

What volume of a 0.716 M KBr solution is needed to provide 10.5 g of KBr? a. 7.52 mL b. 63.2 mL c. 811 mL d. 123 mL e. None of these Calculate the molarity, molarity and mole frac…

What volume of ammonia gas, measured at 489.9 mmHg and 37.4oC, is required to pr

What volume of ammonia gas, measured at 489.9 mmHg and 37.4oC, is required to produce 8.41 g of ammonium sulfate according to the following balanced chemical equation? 2NH3(g) + H…

What volume of an organic solvent must be used to effect 90% separation in one e

What volume of an organic solvent must be used to effect 90% separation in one extraction when only 2.7 g of a certain compound dissolves in 100 ml of water? (K=15) Answer=60 ml W…

What volume of carbon dioxide gas is produced when 3 .00 L of oxygen gas react w

What volume of carbon dioxide gas is produced when 3 .00 L of oxygen gas react with 7.5 L of carbon 28. monoxide in the following equation? 2 CO(g)+ 02(g) 2 CO2(g) A. 6.00 L B. 10…

What volume of carbon dioxide is produced when 189 L of butane (C_4H_10) react w

What volume of carbon dioxide is produced when 189 L of butane (C_4H_10) react with excess oxygen, according 10 the following reaction? (all gases are al the same temperature and …

What volume of carbon dioxide is produced when 56.5 g of calcium carbonate react

What volume of carbon dioxide is produced when 56.5 g of calcium carbonate reacts completely according to the following reaction at 25 oC and I atm? calcium carbonate (s)acum oxid…

What volume of carbon dioxide would be produced at 350degreeC and atm from the c

What volume of carbon dioxide would be produced at 350degreeC and atm from the complete thermal decomposition of 1.00 kg of magnesium carbonate, MgCO_3? What is the density of car…

What volume of fuel should you bring? Assume each of the following: the fuel has

What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of 15 of the heat generated from combustion goes to heat the water (the rest is…

What volume of fuel should you bring? Assume each of the following: the fuel has

What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of 15 of the heat generated from combustion goes to heat the water (the rest is…

What volume of hydrogen gas can be produced at STP from the reaction of 1.00 mol

What volume of hydrogen gas can be produced at STP from the reaction of 1.00 mol, 1.00 and sodium hydroxide, and 2.00 mol water? 2Al(s) + 2NaH(aq) + 6H_2O(l) rightarrow 2NaAl(OH) …

What volume of hydrogen gas is produced when 0.829 mol of iron reacts completely

What volume of hydrogen gas is produced when 0.829 mol of iron reacts completely according to the following reaction at 0oC and 1 atm? iron (s) + hydrochloric acid (aq) iron(II) c…

What volume of oxygen gas reacts with 20.0 mL temperature and pressure remain co

What volume of oxygen gas reacts with 20.0 mL temperature and pressure remain constant.)_HCI(g) + -O_2(11)_CI_2(g) + H_2O(g) 5.00 mL 10.0 mL 20.0 mL 40.0 mL none of the above What…

What volume of oxygen will react with 21 mL of ethanol, assuming the gases are p

What volume of oxygen will react with 21 mL of ethanol, assuming the gases are present at the same temperature and pressure? 2 CH_3CH_2OH(g) + 6 O_2(g) rightarrow 4 CO_2(g) + 6 H_…

What volume of solvent in mal is needed to prepare a 20 M solution of a substanc

What volume of solvent in mal is needed to prepare a 20 M solution of a substance when we only have 0.20 moles 1. 2. An experiment alls for 75 ml ofa 0.75M aqueous solution of sod…

What volume of sulfur dioxide is produced when 1.26 mol of hydrogen sulfide reac

What volume of sulfur dioxide is produced when 1.26 mol of hydrogen sulfide reacts completely according to the following reaction at 0°C and 1 atm? hydrogen sulfide ( g ) + oxygen…

What volume of sulfur trioxide is produced when 82.7 liters of sulfur dioxide re

What volume of sulfur trioxide is produced when 82.7 liters of sulfur dioxide react according to the following reaction? (All gases are at the same temperature and pressure.) sulf…

What volume of the concentrated EtBr must you add to the 40mL solution of agaros

What volume of the concentrated EtBr must you add to the 40mL solution of agarose to end up with your desired final concentration of 5 mg/mL EtBr? To detect the DNA bands in your …

What volume of water, in gallons would be required to fill a 750 mL container? 1

What volume of water, in gallons would be required to fill a 750 mL container? 1 liter = 0.265 gallon Calculate the volume of millimeters for each of the following: 75.0 g of ammo…

What volume of water, in gallons would be required to fill a 750 mL container? 1

What volume of water, in gallons would be required to fill a 750 mL container? 1 liter = 0.265 gallon Calculate the volume of millimeters for each of the following: 75.0 g of ammo…

What volume ot water should be added to 7 mL ot a 10 mM ribotlavin stock in orde

What volume ot water should be added to 7 mL ot a 10 mM ribotlavin stock in order to create a solution with a working concentration of 350 M? . 8. A 10 mL volume ot 75 mM ethanol …

What volume ot water should be added to 7 mL ot a 10 mM ribotlavin stock in orde

What volume ot water should be added to 7 mL ot a 10 mM ribotlavin stock in order to create a solution with a working concentration of 350 M? . 8. A 10 mL volume ot 75 mM ethanol …

What volume, in liters, of 1.09 M KOH solution should be added to a 0.114 L solu

What volume, in liters, of 1.09 M KOH solution should be added to a 0.114 L solution containing 9.60 g of glutamic acid hydrochloride (Glu, FW = 183.59 g/mol; pKa1 = 2.23, pKa2 = …

What volume, in liters, of 1.10 M KOH solution should be added to a 0.117 L solu

What volume, in liters, of 1.10 M KOH solution should be added to a 0.117 L solution containing 10.45 g of glutamic acid hydrochloride (Glu, FW = 183.59 g/mol; pK_a1 = 2.23, pK_a2…

What volumes (in liters) of carbon monoxide and oxygen gas must react according

What volumes (in liters) of carbon monoxide and oxygen gas must react according to the equation 2Co(g)+O2(g)---> 2CO2(g) To form 4.01L of Carbon dioxide? -What is the volume of…

What was green about this experiment? Minimum one suggestion with reference to a

What was green about this experiment? Minimum one suggestion with reference to a specific GCP number. THEORY Recrystallization is a common laboratory practice used to purify a com…

What was green about this experiment? THEORY Electrophilic addition is the most

What was green about this experiment? THEORY Electrophilic addition is the most characteristic reaction of A variety of electrophiles X-Y) will add across the double bond of an al…

What was not green about this experiment? Minimum two suggestions with reference

What was not green about this experiment? Minimum two suggestions with reference to a specific GCP number. THEORY Recrystallization is a common laboratory practice used to purify …

What was the balanced ionic equation for the reaction of sodium bisulfite with b

What was the balanced ionic equation for the reaction of sodium bisulfite with bromine? (write out 2 half equations that needed to balance the reaction) Procedure: Lab bromination…

What was the color of the red cabbage indicator in an acidic solution? What was

What was the color of the red cabbage indicator in an acidic solution? What was the color of the red cabbage indicator in an alkaline solution? What was the color of the turmeric …

What was the effect of the different temperatures on the rates of diffusion in t

What was the effect of the different temperatures on the rates of diffusion in the beakers of water? Did you notice any"currents." or convection, as the color moved through the wa…

What was the effect of the type of shielding on alpha particles? What kinds of m

What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient protection for a person working with alpha-emitting sources? What…

What was the evidence for a shift in equilibrium when conc. hydrochloric acid wa

What was the evidence for a shift in equilibrium when conc. hydrochloric acid was added to the cobalt chloride solution? (a) Write the equilibrium equation for this system. (b) St…

What was the initial color of the mixture in Well C-1? What color change do you

What was the initial color of the mixture in Well C-1? What color change do you observe when you add H_2O to the mixture m Well C-1? What color change do you observe when you add …

What was the purpose of calculating the calorimeter constant? What was the purpo

What was the purpose of calculating the calorimeter constant? What was the purpose of calculating the calorimeter constant? The calorimeter constant is necessary to determine the …

What was the purpose of using the rotary evaporator? How else could you have acc

What was the purpose of using the rotary evaporator? How else could you have accomplished the same task, given enough time (that’s a hint!). Explain why your alternative method wo…

What was the purpose of using the rotary evaporator? How else could you have acc

What was the purpose of using the rotary evaporator? How else could you have accomplished the same task, given enough time (that’s a hint!). Explain why your alternative method wo…

What was the purpose of using the rotary evaporator? How else could you have acc

What was the purpose of using the rotary evaporator? How else could you have accomplished the same task, given enough time (that’s a hint!). Explain why your alternative method wo…

What was the purpose of using the rotary evaporator? How else could you have acc

What was the purpose of using the rotary evaporator? How else could you have accomplished the same task, given enough time (that’s a hint!). Explain why your alternative method wo…

What was wrong in my labels and what is the volume? You mix 265 gallons of a mix

What was wrong in my labels and what is the volume? You mix 265 gallons of a mixture containing 4 wt% Naci (sodium chloride) and 96 wt% water (solution density 1.0253 g/cm3) with …