Chemistry concepts and calculations
117302 questions • Page 2147 / 2347
______________ g of TNT A Little TNT Trinitrotoluene (TNT) is a highly explosive
______________ g of TNT A Little TNT Trinitrotoluene (TNT) is a highly explosive compound. The thermal decomposition of TNT is described by the following chemical equation: 2 C7H5…
______________ g of TNT A Little TNT Trinitrotoluene (TNT) is a highly explosive
______________ g of TNT A Little TNT Trinitrotoluene (TNT) is a highly explosive compound. The thermal decomposition of TNT is described by the following chemical equation: 2 C7H5…
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________is the maximum number of electrons in the 4^th energy level. b) is the m
________is the maximum number of electrons in the 4^th energy level. b) is the maximum number of electrons in the f sublevel. c) is the number of orbitals in the d sublevel. d) is…
________occurs when no single Lewis structure adequately represents the bonding
________occurs when no single Lewis structure adequately represents the bonding in an organic molecule. The _________ results in the partial redistribution of electron density in …
_______is the resistance of a smooth surface to abrasion or scratching._______is
_______is the resistance of a smooth surface to abrasion or scratching._______is the color of the mineral when finely powdered. A mineral that exhibits_______consistently breaks a…
______is an important mineral as it is used to make lime in the production of ce
______is an important mineral as it is used to make lime in the production of cement. Calcite Halite Muscovite An example of an evaporate sulfate mineral used in plaster manufactu…
`Chemistry really is another language sometimes. It abbreviates a lot, and chemi
`Chemistry really is another language sometimes. It abbreviates a lot, and chemical formulas are a way to write a little and still convey a lot of information. For example, consid…
a ) N2 + 3H2 ------------------------> 2 NH3 1 2 2 400 100 pressures ratio of N2
a ) N2 + 3H2 ------------------------> 2 NH3 1 2 2 400 100 pressures ratio of N2 =400 /1 = 400 pressures ratio of H2…
a ---Select---spsp^4sp^2sp^3 b ---Select---spsp^4sp^3sp^2 c ---Select---sp^4sp^2
a ---Select---spsp^4sp^2sp^3 b ---Select---spsp^4sp^3sp^2 c ---Select---sp^4sp^2sp^3sp a ---Select---spsp^4sp^2sp^3 b ---Select---spsp^4sp^3sp^2 c ---Select---sp^4sp^2sp^3sp Use t…
a . C(graphite) +0.5O 2 (g) --> CO(g) b . 2H 2 O 2 (aq) --> 2H 2 O(l) +O 2 (g) c
a. C(graphite) +0.5O2(g) --> CO(g) b. 2H2O2(aq) --> 2H2O(l) +O2(g) c. CH4(g) +2O2(g) --> CO2(g) + 2H2O(g) d. 2Na(s) + 2H2O(l) --> 2NaOH(aq) + H2(g) What is the enthalp…
a . at constant pressure. b . in a bomb calorimeter. c . at constant volume. d .
a. at constant pressure. b. in a bomb calorimeter. c. at constant volume. d. at constant temperature. In a Styrofoam coffee cup calorimeter with a lid, the experiment takes place …
a . at constant pressure. b . in a bomb calorimeter. c . at constant volume. d .
a. at constant pressure. b. in a bomb calorimeter. c. at constant volume. d. at constant temperature. In a Styrofoam coffee cup calorimeter with a lid, the experiment takes place …
a . x =0 b . x = 0.5 c . x = 1 d . x = 2 e . y = 0 f . y = 0.5 g . y = 1 h . y =
a. x =0 b. x = 0.5 c. x = 1 d. x = 2 e. y = 0 f. y = 0.5 g. y = 1 h. y = 2 b) a. x =0 …
a 0.120 M solution of an A 0.120 M solution of an enantiomerically pure chiral c
a 0.120 M solution of an A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.12^4 in a 1-dm sample container. The molar mass of the com…
a 0.3511 gram sample of an unknown compound is burned in a bomb calorimeter. The
a 0.3511 gram sample of an unknown compound is burned in a bomb calorimeter. The 101.5 grams of water warm from 22.14 degrees C to 26.82 degrees C. what is the heat of combustion …
a 0.400-g sample of toothpaste was boiled with a 50-mL solution containinga citr
a 0.400-g sample of toothpaste was boiled with a 50-mL solution containinga citrate buffer and NaCl to extract the fluoride ion. After cooling, the solution is diluted to exactly …
a 0.400-g sample of toothpaste was boiled with a 50-mL solution containinga citr
a 0.400-g sample of toothpaste was boiled with a 50-mL solution containinga citrate buffer and NaCl to extract the fluoride ion. After cooling, the solution is diluted to exactly …
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted t
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the e…
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted t
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the e…
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted t
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the e…
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted t
a 0.5000-g sample containing NaHCO3, Na2CO3, and H2O was dissolved and diluted to 250.0 mL. A 25.00-mL aliquot was then boiled with 50.00 mL of 0.01255 M HCl. After cooling, the e…
a 0.85 g sample of unknown gas has a volume of A 0.85 g sample of unknown gas ha
a 0.85 g sample of unknown gas has a volume of A 0.85 g sample of unknown gas has a volume of 350 mL at 29.1 in. of Hg and a temperature of 100.0 degree C. Calculate the molar mas…
a 0.879-g sample of CaCl2 X 2H2O/K2C2O4 X H2O solid salt mixture is dissolved in
a 0.879-g sample of CaCl2 X 2H2O/K2C2O4 X H2O solid salt mixture is dissolved in 150 mL of deionized, previously adjusted to a pH that is basic. The precipitate, after having been…
a 0.879-g sample of CaCl2 X 2H2O/K2C2O4 X H2O solid salt mixture is dissolved in
a 0.879-g sample of CaCl2 X 2H2O/K2C2O4 X H2O solid salt mixture is dissolved in 150 mL of deionized, previously adjusted to a pH that is basic. The precipitate, after having been…
a 1.0M CuSO4 solution was electrolyzed for 28 minutes and 22 seconds using coppe
a 1.0M CuSO4 solution was electrolyzed for 28 minutes and 22 seconds using copper electrodes. The average current flowing through the cell over the time period was 0.622 A. The ma…
a 1.0M CuSO4 solution was electrolyzed for 28 minutes and 22 seconds using coppe
a 1.0M CuSO4 solution was electrolyzed for 28 minutes and 22 seconds using copper electrodes. The average current flowing through the cell over the time period was 0.622 A. The ma…
a 1.762 g sample of impure H2C2O4 (MW =90.04) was dissolved in water and the imp
a 1.762 g sample of impure H2C2O4 (MW =90.04) was dissolved in water and the impurities removed by filtration. 50.00 mL of .01028 M NaOH was added to the filtrate, this being in e…
a 1.762 g sample of impure H2C2O4 (MW =90.04) was dissolved in water and the imp
a 1.762 g sample of impure H2C2O4 (MW =90.04) was dissolved in water and the impurities removed by filtration. 50.00 mL of .01028 M NaOH was added to the filtrate, this being in e…
a 1.78 gram sample of an unknown gas is found to occupy a volume of .945 L at a
a 1.78 gram sample of an unknown gas is found to occupy a volume of .945 L at a pressure of 645 mmhg and a temperature of 33 Celsius. Assume ideal Behavior the molecular weight of…
a 1.o ml volume or 0.010 M H2SO is added to a mix it 6 drops of 0.010 M HIO3, 14
a 1.o ml volume or 0.010 M H2SO is added to a mix it 6 drops of 0.010 M HIO3, 14 drips of deionized water and 1 drop of starch solution. a color change in the reaction mix occurre…
a 100 gram sample of nacl is added to 100 ml of water at 0 degrees Celsius. afte
a 100 gram sample of nacl is added to 100 ml of water at 0 degrees Celsius. after equilibrium is reached, about 64 g of solid remains I dissolved. describe the equilibrium that ex…
a 100 ml sample of 1.00 M Naoh is mixed with 50.0 ml of 1.0 M h2so4 Please answe
a 100 ml sample of 1.00 M Naoh is mixed with 50.0 ml of 1.0 M h2so4 Please answer a, b,and c stion 21 of 23 (1 point) A 100.0-mL sample of 1.00 MNaoH is mixed with 50.0 mL of 1.00…
a 100.0 mL sample of 0.300M NaOH is mixed with a 100.0mL sample of 0.300 M HNO3
a 100.0 mL sample of 0.300M NaOH is mixed with a 100.0mL sample of 0.300 M HNO3 in a coffee cup calorimeter. If both solutions were initially at 35.00 degrees Celsius and the temp…
a 100.0 mL sample of 0.300M NaOH is mixed with a 100.0mL sample of 0.300 M HNO3
a 100.0 mL sample of 0.300M NaOH is mixed with a 100.0mL sample of 0.300 M HNO3 in a coffee cup calorimeter. If both solutions were initially at 35.00 degrees Celsius and the temp…
a 10L gas cylinder filled with oxygen at 175 atm absolute is used to supply oxyg
a 10L gas cylinder filled with oxygen at 175 atm absolute is used to supply oxygen to an oxygen tent. The cylinder can be used until its absolute temperature drops to 1.1 atm. Ass…
a 12.8 g sample of shiny, orange-brown metal is heated at 65.00 degree Celsius a
a 12.8 g sample of shiny, orange-brown metal is heated at 65.00 degree Celsius and then added to 25.00 g of water in a coffee- cup calorimeter. the water temperature changes from …
a 130.0-g sample of a certain bronze is 90.0% a 130.0-g sample of a certain bron
a 130.0-g sample of a certain bronze is 90.0% a 130.0-g sample of a certain bronze is 90.0% a 130.0-g sample of a certain bronze is 90.0% 101 14 : Part A bons of A1300gsanle of a …
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees Celsius. The sample was mixed with 2 ml of 0.5 M KI and 2 ml of 1 M HCl. the transmittance of the mi…
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C. The sample was mixed with 2 ml of 0.5 M KI and 2 ml of 1 M HCl. the transmittance of the mixture …
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C
a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C. The sample was mixed with 2 ml of 0.5 M KI and 2 ml of 1 M HCl. the transmittance of the mixture …
a 2.00 liter sample of air at -50 degrees Celsius has a pressure of 700 torr. Wh
a 2.00 liter sample of air at -50 degrees Celsius has a pressure of 700 torr. What will be the new pressure a 2.00 liter sample of air at -50 degrees Celcius has a pressure of 700…
a 2.00 mL sample of vinegar is titrated with 15.86 mL of 0.350 M NaOH to a pheno
a 2.00 mL sample of vinegar is titrated with 15.86 mL of 0.350 M NaOH to a phenolphthalein end point A) calculate the molar its of acetic acid in the vinegar solution B) calculate…
a 2.48 liter sample of a He at 739 torr is mixed with a 6.08 L of Ar at 325 torr
a 2.48 liter sample of a He at 739 torr is mixed with a 6.08 L of Ar at 325 torr. Both at 25 degrees Celsius is placed in a 4.80 liter container at 25 degrees Celsius. What is the…
a 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution.
a 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the PH of the solution after the following volumes of base have been added. A. 14.0 mL B…
a 200.0 ml volume of solution contains 3.8*10^-2 M in Al^3+ and 0.29 m in NaF A)
a 200.0 ml volume of solution contains 3.8*10^-2 M in Al^3+ and 0.29 m in NaF A) writeout a chemical equation fir Al^3 ion and F ion forming AlF6^-3 B) write kf equilibrium expres…
a 25.0 g sample of a metal at 98.0 Degrees C is placed in 50.0 g of water at 18.
a 25.0 g sample of a metal at 98.0 Degrees C is placed in 50.0 g of water at 18.0 C. If the final temperature of the alloy and water is 27.4 C what is the specific heat of the met…
a 25.00 mL volume of a standardized .0235 mHCL solution tirades 25.0 mL of a sat
a 25.00 mL volume of a standardized .0235 mHCL solution tirades 25.0 mL of a saturated Ca(OH)2 solution to the methylene orange endpoint. Calculate the Ksp of Ca(OH)2 a 25.00 mL v…
a 25.00 ml sample of a liquid bleach was fully diluted to 100 in a volumetric fl
a 25.00 ml sample of a liquid bleach was fully diluted to 100 in a volumetric flask a 25 ml portion of the diluted sample was transferred into a Erlenmeyer flask containing an exc…
a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask wi
a 295 mL flask contains pure helium at a pressure of 754 torr. A second flask with a volume of 490 mL contains argon at a pressure of 731 torr. A. If two flasks are connected thro…
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