If 2000 mL/min of air was sampled for 30 min at 18 °C and 103 kPa what is the volume occupied in liters at temperature of 25 °C and pressure of 1 atm. If 3.2 ng of toluene (C«HSCH3) was collected at 25 °C and pressure of 1 atm, what is the ambient concentration of toluene in ng/L and in ppbv?
Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 300oC and 0.855 atm…
A: Given data contains, Temperature is 300°C=573.15 K. Pressure is 0.855 atm. Mass of sodium bromide is…
Q: 1. An air mixture contains 0.00015 mol CO in 10 mol of air. What is the CO concentration in ppmv?…
A: Given number of moles of CO = 1.5 × 10-4 molesTotal moles of the mixture = 10 mole
Q: 3. Souring of wine occurs when ethanol is converted to acetic acid by oxygen: C2H$OH) + O2(g)*…
A: a) Determine the grams of acetic acid present in 1000mL (1.00L). 1.00mL=0.0274…
Q: what is the number of mole of co2 produced when .0200 mol c2h2 burns?
A: A chemical equation can be represented by using symbols and formulas of the participating species.…
Q: Calculate the volume of CO2 (g) measured at 20°C and 750 mm Hg that can be obtained from the…
A: An ideal gas follows the law shown below: PV=nRT .................... (1) Where: P is…
Q: A bubble of air escaping from a diver's mask rises from a depth of 144 ft to the surface where the…
A:
Q: How many grams of Pb(NO,)2 (331.2 g/mol )are needed to prepare 300 ppm (w/v) of Ph (207.2 gmol) in…
A: Given information, Molar mass of Pb(NO3)2 = 331.2 g/mol Volume of solution = 1 L = 1000 mL ppm…
Q: What pressure, in atmospheres, is exerted on the body of a diver if she is 36 ft below the surface…
A:
Q: Example: - A 1-m sample of air was found to contain 80pg/m of SO2. the temperature and pressure were…
A: Given data Concentration of SO2 = 80 μgm3 And we know that ppm is defined as part per million.
Q: A student performed the experiment described in this module, using 4.00 mL of a 3.5% H2O2 solution…
A: Given that,Volume of the original solution = 4 mLdensity of H2O2 = 1.61 g/mL mass of the solution =…
Q: 1. A natural gas mixture whose volumetric analysis is 85.8% CH4 (Methane), 13.2% C2H6 (Ethane), 0.9%…
A: Molar mass of CH4 = 16g/mol Molar mass of C2H6 = 30 g/mol Molar mass of CO2 = 44 g/mol Molar mass of…
Q: One mole of CO2 at STP will occupy Group of answer choices 22.4 L 44 g 44 L 1.0 L 24.5 L
A:
Q: Log Koc = 2.36 for the pesticide Carbaryl. Rainwater percolating down through the soil contains 5…
A:
Q: A student performed the experiment described in this module, using 4.00 mL of a 3.5% H2O2 solution…
A: Given, collected oxygen is 79.20 ml We know According to moles concept 1 mol O2 = 22400 ml O2
Q: 2. Determine the concentration (mg/m and ppm) of benzene in a closed room (300 m³) if 3.20 grams are…
A:
Q: 0.018 0.016 0.014+ 0.012 + 0.01 0.008 0.006 0.004 0.002 + 10 20 30 40 50 60 70 80 90 Time(min) From…
A: In chemistry, chemical kinetics deals with the kinetics of the reaction and given very useful…
Q: Atmospheric scientists often use mixing ratios to express the concentrations of trace compounds in…
A: Given data: Total pressure = 625 torr Temperature = 0 ℃ Concentration of CO = 3.2×102 ppmv
Q: How many grams of Pb(NO3)2 (331.2 gimol )are needed to prepare 300 ppm (w/v) of Ph*2 (207.2 gimol)…
A:
Q: A 0.5 mole sample of argon gas occupies a volume of 500 mL at 740 mm Hg pressure. At what volume…
A: The ideal gas equation is given by, Where, P is the pressure…
Q: A student performed the experiment described in this module, using 6.00 mL of a 3% H2O2 solution…
A: Given, Total Pressure, P = 30.30 in. Hg 1 in = 2.54 cm 1 cm Hg = 10 torr Hg Total Pressure, P =…
Q: mixture composed of 60%CO2 and 40%He by volume analysis is contained at 0.5MPa. What is the partial…
A: Given : We have to calculate the partial pressure of the helium in the mixture.
Q: A bubble of air escaping from a diver's mask rises from a depth of 108 ft to the surface where the…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution…
A: Given that,barometric pressure = 30.02 in Hg = 30.02 x 25.4 = 762.508 mm Hg1 in Hg = 25.4 mmHg Vapor…
Q: Using the procedure in Experiment 8, acetonitrile (molar mass = 41.05 g/mol) is collected at a…
A: Answer:- This question is answered by using the simple concept of calculation of volume of a gas…
Q: The volume of the mixture prepared by taking 1.158 moles and 0.842 moles of water and ethanol,…
A:
Q: Assuming that the temperature of the atmosphere at 33.5 km of altitude is -33 °C, the concentration…
A: Given: Height or altitude of lake = 33.5 Km = 33500 m (Since 1 km =…
Q: Room temperature: 295.9 K Barometric pressure: 769.0 mmHg Vapor of water: 21.1 mmHg Volume of…
A: The ideal gas law equation is expressed as:
Q: The concentration of water vapour in the Martian atmosphere is very low – only about 210 ppm (by…
A: Parts per million is defined as the number of parts of a component present in a million (100000)…
Q: Part C High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to…
A: Pressure of a substance can be expressed in terms of atm, torr and pascal. Write the relation of atm…
Q: Room temperature: 294.0 K Barometric pressure: 770.5 mmHg Vapor of water: 18.6 mmHg Volume of…
A: The corrected barometric pressure is 752 mmHg.
Q: The atmosphere in a workplace contains 300 ppm of acetone (TLV 1000 ppm),125 ppm of ethyl acetate…
A:
Q: What pressure, in atmospheres, is exerted on the body of a diver if she is 39 ft below the surface…
A: Pressure exerted by water is calculated as follows,
Q: Aqueous sulfurous acid (H₂SO₃) was made by dissolving0.200 L of sulfur dioxide gas at 19C and 745…
A: Given information: Pressure = 745 mmHg Volume = 0.200 L Volume of sodium hydroxide = 10.0 mL…
Q: sodium azide (Na3N) decomposes on heating to form sodium and nitrogen gas. 2Na3N--> 6Na+N2 1.35g…
A: The balanced reaction taking place is given as, => 2 Na3N ------------> 6 Na + N2 Given: Mass…
Q: Activity: Under conditions of pressure and temperature close to normal (100 kPa, 25 °C), 99.97% of…
A: The pressure of a gas is inversely proportional to the volume at constant temperature is known as…
Q: Assume that a solute has a D* of 2.03 x 10-9 m2 / Sec and that w is equal to 0.5. If landfill…
A:
Q: The concentration of gases, polluting or not, is usually expressed in ppm or ppb. Consider an air…
A: Given the concentration of SO2 in the air sample = 320 μg/m3 Temperature, T = 27+273.15 = 300.15 K…
Q: 1. Determine the value of the ideal gas constant. 2. Compare your value of ideal gas constant to the…
A: The ideal gas equation can be given as follows; PV = nRT where P = pressure, V = volume, n = moles,…
Q: Calculate the volume of nitrogen gas (in cm³) produced on complete decomposition of 1.35g of sodium…
A:
Q: A 10.0 mL sample of CO2 is collected by the downward displacement of water at 23.0°C and a room…
A:
Q: 4. Consider the mass% hydrogen peroxide experiment Catalase 2H,02(aq) 2H20(1) + 02(g) 3.00mL of a…
A: Given that,
Q: 15. If the concentration of ClO. in the South Pole air is 2.0 x 10° molecules/cm3 at 1 atm and…
A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n =…
Q: 8.If the label tells you to apply 3 ounces of Pesto 60 SP per 1,000 sq. ft. then how much would be…
A: Given that, Pesto 60 SP required per 1000 sq. ft = 3 ounces To find: 1). Quantity of Pesto 60 SP…
Q: the partial pressure of N2 is 2.70 x 105 Pa and the partial pressure of Ne is 5.00 x 105 Pa in a…
A:
Q: The sulfur dioxide (SO2) concentration is measured at 0.6 mg/m in Denver where the atmospheric…
A: ppm: It is a unit of concentration i.e. parts per million. The mass of a chemical or contaminate per…
Q: Hydrogen peroxide decomposes releasing oxygen with iodine as catalyst. When 50.0 mL of 35% hydrogen…
A: The decomposition of hydrogen peroxide into oxygen gas can be demonstrated by the following chemical…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Ferric oxide (Fe2O3, density 5 5.24 g/mL) obtained from ignition of a gravimetric precipitate weighed 0.296 1 g in the atmosphere. What is the true mass in vacuum?A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (11) Calculate the percent error for the experiment.A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (11) Calculate the percent error for the experiment. What is the observed molar volume?
- (A) The catalytic decomposition of hydrogen peroxide by the enzyme catalase is showing below: 2 H;O2=2 H¿0 + O, In an experiment 5 µmole/L of the enzyme catalase was used to decompose 0.50 M H2O2. The Km of catalase for H2O2 is 0.15 M and the Vmax of the reaction is determined as 100 mol/L- s. Using Michaelis-Menten equation, calculate the rate of the reaction, the turnover number, and the catalytic efficiency for catalase.A bloodhound, with an acute sense of smell, sits at one end of a long, unventilated corridor.At the other end of the corridor a small amount of an aerosol is released containing the volatile, fragrant compounds: acetaldehyde (C2H4O) jasmine lactone (C10H16O2) acetoin (C4H8O2) hexyl acetate (C8H16O2) 1-octen-3-one (C8H14O) Rank the compounds in the chronological order they are detected by the hound. 1-octen-3-one acetoin jasmine lactone hexyl acetate acetaldehydeb) A carbonate of metal X has the formular X,CO3. The carbonate reacts with hydrochloric acid according to the following equation: X,CO3 + 2HC! → 0.25g of X,CO3 was found to neutralize exactly 23.6cm³ of hydrochloric acid of concentration 0.15moldm? ( RAM for C=12;0=16) i) Calculate the number of moles of hydrochloric acid 2XCl + CO2 +H,0 ii) Calculate the number of moles of X,CO3 iii) Calculate the relative molecular mass of X,CO3 iv) Calculate the relative atomic mass of X and hence deduce its identity c) Propanoic acid is a weak acid with an acid dissociation constant of 1.22x 10°moldm i) Write an equation for the ionization of propanoic acid -3 ii) Calculate the pKa for propanoic acid Lo iii) Sodium propanoate is made by the titration using 0.1M sodium hydroxide with propanoic acid A: Write an equation for the reaction B: Name a suitable indicator for this titration iv) A mixture of sodium propanoate and propanoic acid acts as a buffer solution. What is a buffer solution?
- A first-stage recovery of magnesium from seawater is precipitationof Mg1OH22 with CaO:Mg2+(aq) + CaO(s) + H2O(l)---->Mg(OH)2(s) + Ca2+(aq) What mass of CaO, in grams, is needed to precipitate 1000lb of Mg(OH)2?You are required to prepare 5 L of a solution containing 1.000 x 103 mol/L of Cu2"(aq). Which of the following procedures would produce an appropriate solution? O Dissolve 0.0636 g of copper metal in nitric acid, add to a 5.000 Lvolumetric flask, dilute to the mark with deionized water and mix well. O Dissolve 1.248 g of CuSO.5H,0(s) in deionized water, add to a 5.000 L volumetric flask, dilute to the mark with deionized water and mix well. Dissolve 0.250 g of CUSO,.5H,O(s) in deionized water, add to a 5.000 L volumetric flask, dilute to the mark with deionized water and mix well.KMnO4 and Na2C2O4 solutions were used in the reactions that took place in a back titration to determine the amount of H2O2 in a sample. Calculate the concentration of H2O2 in the sample (w / v) as% by making appropriate assumptions for the volumes and normality of all these solutions.
- We have a hot tub that uses ozone (O3) gas as a disinfectant. The ozone generatorbubbles ozone in the water and it has a concentration of 2 mg/L of dissolved ozone in the water. I’mconcerned that the headspace above the water will have a high concentration of ozone which can behazardous. For example, OSHA states that the maximum permissible exposure is 0.2 ppmv for a 2hour exposure. Will the equilibrium ozone concentration in the headspace above the water exceedthis limit? The Henry’s Law constant for ozone is:O3(g) ↔ O3(aq) KH = 9.4 x 10-3 mol/L-atm- Exhaust gas from an automobile contains air and 10‐5 mole fractions of COin air at 25 degC and 1.2 atm. Express this concentration as a mass concentration (kg/m3). - If the atmosphere is 25 degC and 1.2 atm and contains 0.79 mole fractions of N2, 10‐5 mole fractions of a chemical, and a remainder of O2, what is its density (in kg/m3)?The iron (55.847 g/mol) in a 700.0 mL sample of a natural water was determined by precipitation of the cation as hydrated Fe203. The precipitate was filtered, washed, and ignited in a crucible to form Fe203 (MW = 159.69 g/mol). The mass of the product was 0.1168 g. Calculate the ppm iron in the water. A: В: Oc: OD: OE: F: OG: H: 99.75 116.71 136.55 159.76 186.92 218.70 255.87 299.37 Submit Answer Tries 0/99