Browse W
Alphabetical listing with fast deep pagination.
66619 items • Page 355 / 1333
When 11.0 g of zinc metal reacts with excess HCl, how many liters of H 2 gas are
When 11.0 g of zinc metal reacts with excess HCl, how many liters of H2 gas are produced at STP? Express your answer to three significant figures. Do not include units in your ans…
When 12.0 mL of a 2.76 E-4 M iron(II) nitrate solution is combined with 12.0 mL
When 12.0 mL of a 2.76 E-4 M iron(II) nitrate solution is combined with 12.0 mL of a 2.31E - 4 M potassium hydroxide solution does a preciptive form? For these conditions the Reac…
When 12.50 g of finely divided brass (60% Cu, 40% Zn) at 100.0 o C is quickly st
When 12.50 g of finely divided brass (60% Cu, 40% Zn) at 100.0oC is quickly stirred into 50.00 g of water at 22.0oC in a calorimeter, the water temperature rises to 24.0oC. Find t…
When 120 V is applied to the filament of a 75 W lightbulb, the current drawn is
When 120 V is applied to the filament of a 75 W lightbulb, the current drawn is 0.63 A. When a potential difference of 3 V is applied to the same filament, the current is 0.086 A.…
When 120 mL of CH 6 N 2 was combusted with a stoichiometrically-equivalent amoun
When 120 mL of CH6N2 was combusted with a stoichiometrically-equivalent amount of molecular oxygen in a constant-volume bomb calorimeter, the temperature of the surrounding water …
When 14 different second-year medical students measured the systolic blood press
When 14 different second-year medical students measured the systolic blood pressure of the same person, they obtained the results listed below (in mmHg). Assuming that the populat…
When 14.7 mL of aqueous HBr (a strong acid) was added to water, 0.482 L of a sol
When 14.7 mL of aqueous HBr (a strong acid) was added to water, 0.482 L of a solution with a pH of 4.23 was produced. What was the molarity of the original HBr solution? - Do I fi…
When 15.0 g of a metal is dropped into a graduated cylinder containing water, th
When 15.0 g of a metal is dropped into a graduated cylinder containing water, the volume increases form 50.0 mL to 55.6 mL. Calculate the density of the metal. 0.14 g/mL 84 g/mL 0…
When 15.0 mL of a 8.52 E .4 M lead acetate solution is with 18.0 mL of a solutio
When 15.0 mL of a 8.52 E .4 M lead acetate solution is with 18.0 mL of a solution does a participate form? For these conditions the Reaction Quotient , Q is equal to For the react…
When 150.0 mL of a 0.500 M citric acid (H_3C_5H_5O_7) solution reacts with 50.0
When 150.0 mL of a 0.500 M citric acid (H_3C_5H_5O_7) solution reacts with 50.0 mL of a 3.00 M KOH solution in a calorimeter, the temperature of all components rises from 21.2 deg…
When 16:1 6 fatty acids are newly synthesized in the liver, they have two potent
When 16:16 fatty acids are newly synthesized in the liver, they have two potential metabolic fates; one is to be processed for export into the circulation, the other is to be oxid…
When 2 moles of CO(g) read with 0:(g) to form CO2(g) according to the following
When 2 moles of CO(g) read with 0:(g) to form CO2(g) according to the following equation. 566 kJ ol energy are evolved. 2CO(g) + O2(g) rightarrow 2CO2(g) Is this read ion endother…
When 2 moles of H2(g) react with O2(g) to fonn H2O(g) according to the following
When 2 moles of H2(g) react with O2(g) to fonn H2O(g) according to the following equation. 484 kJ of energy arc evolved 2H2(g) + O2(g)rightarrow2H2O(g) Is this reaction endothermi…
When 2.13 g of a nonelectrolyte solute is dissolved in water to make 175 mL of s
When 2.13 g of a nonelectrolyte solute is dissolved in water to make 175 mL of solution at 21 °C, the solution exerts an osmotic pressure of 973 torr. Map a Sapling Learning acmil…
When 2.16 L of 1.800M Na_2S0_4 solution at 30.0degreeC is mixed with 1.42 L of 0
When 2.16 L of 1.800M Na_2S0_4 solution at 30.0degreeC is mixed with 1.42 L of 0.360 M Ba(N0_3)_2 solution at 30.degreeC in a calorimeter, the white solid BaS0_4 forms, and the te…
When 2.46g of a nonelectrolyte solute is dissolved in water to make 115 ml of so
When 2.46g of a nonelectrolyte solute is dissolved in water to make 115 ml of solution at 25 degrees C, the solution exerts an osmotic pressure of 959 torr. A) what is the molar c…
When 2.500 g of hydrogen gas, H2(g), was completely reacted with gaseous nitroge
When 2.500 g of hydrogen gas, H2(g), was completely reacted with gaseous nitrogen, N2(g), at constant pressure to produce gaseous ammonia, NH3(g), i.e., in the reaction: 3 H2(g) +…
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, th
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, the temperature of the solution went up to 37.1C. a) is this dissolving process exothermic? yes or no…
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, th
When 2.5000g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0C, the temperature of the solution went up to 37.1C. a) is this dissolving process exothermic? yes or no…
When 2.55g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is disso
When 2.55g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of water, the freezing point of the resulting solution is -0.258 Degrees Celsius. C…
When 2.95 ml of hydrogen peroxide solution decomposes, 36.9 ml of oxygen gas is
When 2.95 ml of hydrogen peroxide solution decomposes, 36.9 ml of oxygen gas is evolved. The oxygen gas is collected over water at 24 celsius and at a total pressureof 762 mmHg. T…
When 2.95 ml of hydrogen peroxide solution decomposes, 36.9 ml of oxygen gas is
When 2.95 ml of hydrogen peroxide solution decomposes, 36.9 ml of oxygen gas is evolved. The oxygen gas is collected over water at 24 celsius and at a total pressureof 762 mmHg. T…
When 2.950 g of AX (s) dissolves in 100.0 g of water in a coffee-cup calorimeter
When 2.950 g of AX (s) dissolves in 100.0 g of water in a coffee-cup calorimeter the temperature rises from 22.0 oC to 31.7 oC. Calculate the enthalpy change (in kJ/mol) for the …
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has a 73.3 % yield. What mass of CH3Cl forms.? Hydrogen chloride also forms.
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has
When 20.6 gm of methane and 39.7 gm of chlorine gas undergo a reaction that has a 73.3 % yield. What mass of CH3Cl forms.? Hydrogen chloride also forms.
When 200 convicted embezzlers were randomly selected, the mean (x-bar) length of
When 200 convicted embezzlers were randomly selected, the mean (x-bar) length of prison sentence was found to be 22.1 months and the standard deviation was found to be sigma = 8.6…
When 200 convicted embezzlers were randomly selected, the mean (x-bar) length of
When 200 convicted embezzlers were randomly selected, the mean (x-bar) length of prison sentence was found to be 22.1 months and the standard deviation was found to be sigma = 8.6…
When 20mL of 1.40M solution of calcium nitrate is mixed with 70.0mL of 0.234M po
When 20mL of 1.40M solution of calcium nitrate is mixed with 70.0mL of 0.234M potassium iodate a precipitate (Ca(IO3)2) is formed. a) Write a balanced equation for this reaction b…
When 20mL of 1.40M solution of calcium nitrate is mixed with 70.0mL of 0.234M po
When 20mL of 1.40M solution of calcium nitrate is mixed with 70.0mL of 0.234M potassium iodate a precipitate (Ca(IO3)2) is formed. a) Write a balanced equation for this reaction b…
When 22.5 When 22.5 grams of hydrogen sulfide(g) react with excess oxygen(g) acc
When 22.5 When 22.5 grams of hydrogen sulfide(g) react with excess oxygen(g) according to the following reaction: 2H2S(g) + 3O2(g) 2H2O(g) + 2SO2(g) ?H = -1.04E+3 kJ Which of the …
When 22.5 When 22.5 grams of hydrogen sulfide(g) react with excess oxygen(g) acc
When 22.5 When 22.5 grams of hydrogen sulfide(g) react with excess oxygen(g) according to the following reaction: 2H2S(g) + 3O2(g) 2H2O(g) + 2SO2(g) ?H = -1.04E+3 kJ Which of the …
When 23.6 g of calcium chloride, CaCl_2, was dissolved in water in a calorimeter
When 23.6 g of calcium chloride, CaCl_2, was dissolved in water in a calorimeter, the temperature rose from 25.0degreeC to 38.7degreeC. If the heat capacity of the solution and th…
When 235 U fissions, the fission products are not always the same and exactly tw
When 235U fissions, the fission products are not always the same and exactly two neutrons are not always released. An example of one fission reaction is 1) What is the energy rele…
When 235U fissions, the fission products are not always the same and exactly two
When 235U fissions, the fission products are not always the same and exactly two neutrons are not always released. An example of one fission reaction is a) What is the energy rele…
When 25 ml of 1 M H 2 SO 4 is added to 50ml of 1 M NaOH at 25 C in a calorimeter
When 25 ml of 1 M H2SO4 is added to 50ml of 1 M NaOH at 25 C in a calorimeter, the temp of the aqueous solution increases to 33.9 C. Assuming the specific heat os the solution is …
When 25.0 mL of 1.00 M NaOH (aq) at 25.0 degree C is mixed 25.0 mL of 1.00 M HCI
When 25.0 mL of 1.00 M NaOH (aq) at 25.0 degree C is mixed 25.0 mL of 1.00 M HCI (aq) at 26.5 degree C, the temperature of the resulting solution rises to 32.5 degree C. Assume s_…
When 25.0 mL of 1.00 M NaOH(aq) at 25.0 degree C is mixed with 25.0 mL of 1.00 M
When 25.0 mL of 1.00 M NaOH(aq) at 25.0 degree C is mixed with 25.0 mL of 1.00 M HCl (aq) at 26.5 degree C, the temperature of the resulting solution rises to 32.5 degree C. Assum…
When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is th
When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is the enthalpy of fusion of methanol? (b) A sample of benzene was vaporized at 25 When 25.23 g of metha…
When 25.5 mL of 0.500 M H2SO4 is added ot 25.5 mL of 1.00 M KOH in a coffee-cup
When 25.5 mL of 0.500 M H2SO4 is added ot 25.5 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temmperature rises to 30.17 degrees Celsius. Calculate de…
When 25.5 mL of 0.500 M H2SO4 is added ot 25.5 mL of 1.00 M KOH in a coffee-cup
When 25.5 mL of 0.500 M H2SO4 is added ot 25.5 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temmperature rises to 30.17 degrees Celsius. Calculate de…
When 25g or H2O at 80.4 C is added to 100g at 24.7 C in a calorimeter (also at 2
When 25g or H2O at 80.4 C is added to 100g at 24.7 C in a calorimeter (also at 24.7C), the equilibrium temperature is 35.0C. How much heat is lost to the calorimeter. How would I …
When 27.2 g of solid A, at its melting point of 34.0 degree C, was added to 62.7
When 27.2 g of solid A, at its melting point of 34.0 degree C, was added to 62.7 g of liquid A at 51.2 degree C, the mixture cooled to 35.0 degree C, with no solid remaining. Give…
When 27.5 mL of 0.615 M H2SO4 is added to 27.5 mL of 1.23 M KOH in a coffee-cup
When 27.5 mL of 0.615 M H2SO4 is added to 27.5 mL of 1.23 M KOH in a coffee-cup calorimeter at 23.50
When 27.5 mL of 0.615 M H2SO4 is added to 27.5 mL of 1.23 M KOH in a coffee-cup
When 27.5 mL of 0.615 M H2SO4 is added to 27.5 mL of 1.23 M KOH in a coffee-cup calorimeter at 23.50
When 28.0 mL of 0.515 M H 2 SO 4 is added to 28.0 mL of 1.03 M KOH in a coffee-c
When 28.0 mL of 0.515 M H2SO4 is added to 28.0 mL of 1.03 M KOH in a coffee-cup calorimeter at 23.50 When 28.0 mL of 0.515 M H2SO4 is added to 28.0 mL of 1.03 M KOH in a coffee-cu…
When 29.7 g of HCI and 28.4 g of CaCO_2 are mixed both reactants are completely
When 29.7 g of HCI and 28.4 g of CaCO_2 are mixed both reactants are completely consumed. What mass of CO_2 gas is produced if the mass of he other producers formed is 36.6 g? (A)…
When 2A (g) B(g) + C(g) [exothermic] is at equilibrium the concentration
When 2A (g) <-----> B(g) + C(g) [exothermic] is at equilibrium the concentration of B a. increase b. decreases c. is unchanged d. changes randomly e. cannot predict Concentr…
When 3.56 g of an unknownhydrocarbon was dissolved in 125 g of benzene, the free
When 3.56 g of an unknownhydrocarbon was dissolved in 125 g of benzene, the freezing pointof the solution was found to be 4.41oC. Analysis of thehydrocarbon showed that it contain…
When 3.648 grams of Epsom salt is heated to a constant mass, 1.782 grams of anhy
When 3.648 grams of Epsom salt is heated to a constant mass, 1.782 grams of anhydrous magnesium sulfate is produced, according to the equation below. What is the formula for hydra…
When 3.648 grams of Epsom salt is heated to a constant mass, 1.782 grams of anhy
When 3.648 grams of Epsom salt is heated to a constant mass, 1.782 grams of anhydrous magnesium sulfate is produced, according to the equation below. What is the formula for hydra…