The combustion of ammonia in the presence of excess oxygen yields NO2 and H20: 4 NH3 (g) + 7 02 (g) → 4 NO2 (g) + 6 H2O (g) The combustion of 174 g of ammonia consumes g of oxygen. Atomic weights: N=14.01, H=1.01, O=15.99. Input values only with 2 decimal places.
Q: In the Analytical Chemistry – I laboratory Ms. Bushara Al Busaidi wanted to prepare NaCl solution.…
A: Molarity is defined as number of solute present in 1000 ml of solution . Mole=…
Q: In a clean and dry crucible with cover weighing 24.342 g some of the unknown hydrate (CuSO4.nH2O)…
A: Mass of crucible with and without unknown hydrate and the final constant mass after heating using…
Q: Assume that vinegar is 5% acetic acid (by mass) at a density of 1.01 g mL-1. This means that 100 mL…
A: The answer is given below
Q: The mass of magnesium used in this experiment is critical to determining the moles of hydrogen gas…
A: The reaction considered is the formation of H2 gas by the reaction of Mg with HCl. The balanced…
Q: A binary mixture contains 56 wt. 6 propane C3H8 (MW = 44 g/mol) and the remainder is butane C4H10…
A: Givenwt% of propane=56It indicates weight of propane=56 gmRemaining percentage contains butane ie…
Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…
A: Given is saturated carboxylic acid CnH2n+1COOH. With n = 6 Atomic weights as C = 12.01 g H = 1.01 g…
Q: Analytical chemist from Petroleum Development Oman extracted petroleum from crude oil and measured…
A: Please have a look into the solution:
Q: Show complete solution. Round everything to 4 decimal places and box all final answers. Show all…
A: solution given in question ;pyrites analysing ; FeS2= 81%gangue =19%oslat analysing…
Q: Your answer is wrong. In addition to checking your math, check that you used the right data and DID…
A:
Q: If one mixes 50 cm3 of EtOH and 50 cm3 of H2O at room temperature; will the total volume of the…
A: Partial molar volume give the answer for this question. Water H2O Ethanol C2H5OH
Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…
A: We need to calculate %C by mass for n=12 in the formula CnH2n+1COOH Atomic weights C = 12.01 g H =…
Q: a) For 8.85×10−3 M LiOH, determine [OH−] and [H3O+]. Express your answers in moles per liter to two…
A: (a)Given, 8.85*10-3M LiOH
Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…
A: Carbon dioxide reacts with water to form glucose and oxygen gas. Write the complete balanced…
Q: A mixture of styrene and ethylbenzene are analyzed by MALDI-TOF-MS. Styrene, CgHg*, has a flight…
A: Introduction: MALDI is a soft ionization which includes striking of laser on small molecules to form…
Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…
A: The reaction taking place can be written as => CO2 + H2O -------> C6H12O6 + O2 Balancing :…
Q: How many mL of (5.0300x10^0) M NaNO3 would be needed in a dilution experiment to make (8.56x10^2) mL…
A: Given-> Initial molarity (M1) = 5.0300 ×100M Final molarity (M2) = 2.3400 ×100 M Final volume…
Q: Choose the one correct or one incorrect statement regarding the technique of weighing by difference:…
A: Weighing by difference is a technique that measures quantitatively the mass of a solid sample. It is…
Q: A metallurgist wants to gold-plate a thin sheet with the following dimensions: 1.5 in x 8.5 in x…
A: first we have to find the volume, volume=length ×width ×height then we know, density=mass/volume…
Q: A chemist adds 415.0 mL of a 3.59 × 10 mM magnesium fluoride (MgF,) solution to a reaction flask.…
A:
Q: After performing precipitation gravimetry, Asta placed the weighing form inside the crucible, heated…
A:
Q: What is the concentration, in mass %, of a solution made by mixing 35.89 g of NaCl with 253.4 mL of…
A: The mass % can be calculated by the ratio between the mass of the solute to the total mass of the…
Q: high-performance heater that burns propane, C3H8(g), is adjusted so that 100.0 g of O2(g) enters the…
A: .According to the question, high-performance heater that burns propane, C3H8(g), is adjusted so that…
Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…
A: Given that :- saturated carboxylic acids has the general formula CnH2n+1COOH Atomic weights:- 1) C…
Q: Ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H,O).…
A:
Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…
A: Molar mass of C17H35COOH = 284.52 Mass of all C = 12.01 ×18 = 216.18 %C by mass…
Q: 2. -3 9. Gaseous butane (CH, (CH,) CH, will react with gaseous oxygen (0,) to produce gaseous carbon…
A: Given Data : 1. Mass of butane = 4.65 g 2. Mass of oxygen = 25 g
Q: Evaluate the manager’s calculations with regard to significant digits. If necessary, rewrite any…
A:
Q: If the manufacturer of the vinegar used in the experiment stated that the vinegar contained 5.0%…
A: Given: Theoretical percentage of acetic acid in the solution = 5.0 % And experimentally determined…
Q: [OH-] = 1.0 x 10-7 Express the concentration to two significant figures and include the appropriate…
A: Given-> [OH^-] = 1.0 × 10^-7 M If [H3O^+] is 1.0 × 10^-7 M => then it is neutral .
Q: For a 77.1% mixture of methanol (CH3OH) in water on a mass basis, calculate the percentage of…
A: The number of moles of a compound is related to its mass by the following relation: Number of moles…
Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…
A:
Q: 3. Find the density of air at 24°C and 2.026 x 10^5 Pa. One mole of air is assumed to be 79%…
A: PV = nRT 1Pa = 9.869*10-6 atm P = 2.026 * 105Pa = 2.026*105*9.869*10-6 = 1.999atm n = 1 mole T =…
Q: O 1.0. 1.2. 7.0, 13.9 O 1.0. 3.2. 7.0, 10.9 O 1.0. 1.2. 7.0, 10.9
A: [HCl] = 0.10 N Volume = 20 mL milliequivalents of HCl = 20 mL * 0.1 n = 2.0 meq Before scaling 2.0…
Q: In a certain cement production, 100 kg of limestone containing 90% carbonates (Calcium and Magnesium…
A:
Q: Calculate the density of an unknown solid (g/ml) = A top-loader balance measured the mass of the…
A: Density = mass÷ volume Number of moles = mass ÷ molar mass
Q: Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse…
A:
Q: A cylindrical bar was found at the bottom of a storage tank of unknown composition. The material had…
A: We have to calculate the density of material.
Q: The molecular formula for potassium hydrogen phthalate (abbreviated KHP) is C3H5O4K. What is the…
A: Given :- KHP Formula = C8H5O4K To calculate :- It's molar mass
Q: (0-1) Activated carbon, also called activated carbon, is obtained by carbonization of organic…
A: The complete sentences by underlining the correct phrases are given as follow : The process of…
Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…
A: Given Mass of water = 5.3 gram Mass of CO2 = ?
Q: The molecular formula for potassium hydrogen phthalate (abbreviated KHP) is C8H5O4K. What is the…
A:
Q: Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO3 and 295 mL of…
A:
Q: When you perform the following operations, how many signifcant figures should your answer have?…
A: Addition of significant figures :- The answer of addition should be rounded to the same number of…
Q: In the equation SiO2 + 2C → Si + 2CO , if 24.0 grams of silicon dioxide is used, how many grams of…
A: This question is based on mole concept. 1mole=6.022*1023particle= Molar mass=22.4L 22.4gm of Carbon…
Q: 9. Wolf teeth cost $28 per kg from Mr. Topango. An average wolf tooth weighs .55ounces. If you give…
A:
Q: Solid ammonium carbonate, a predecessor to modern baking soda and baking powder, forms gaseous…
A: The decomposition of ammonium carbonate to produce ammonia and carbon dioxide is as follows:…
Q: A patient needs an infusion with 7 mmol of monobasic potassium phosphate and 7 mml of dibasic…
A: Formula used: moles = massMolar mass Unit conversion: 1 mmol = 1 x 10-3 mol 1 mg = 1 x 10-3 g
Q: chemist adds 0.50L of a 1.3M barium acetate (Ba(C2H3O2)2) solution to a reaction flask. Calculate…
A: given data ; Volume of solution =0.50 L molarity of solution = 1.3M
Q: Automobiles are often implicated as contributors to global warming because they are a source of the…
A: In a balanced chemical reaction the reactions react and products form in the molar ratio of their…
Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- The present average concentration (mass percent) of magnesium ions in seawater is 0.13%. A chemistry textbook estimates that if 1.00 × 108 tons Mg were taken out of the sea each year, it would take one million years for the Mg concentration to drop to 0.12%. Do sufficient calculations to either verify or refute this statement. Assume that Earth is a sphere with a diameter of 8000 mi, 67% of which is covered by oceans to a depth of 1 mi, and that no Mg is washed back into the oceans at any time.The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.4.69 The pictures below show a molecular-scale view of a chemical reaction between H2 and CO to produce methanol, CH3OH. The box on the left represents the reactants at the instant of mixing, and the box on the right shows what is left once the reaction has gone to completion. Was there a limiting reactant in this reaction? If so, what was it? Write a balanced chemical equation for this reaction. As usual, your equation should use the smallest possible whole number coefficients for all substances.
- 3.83 For the reaction of nitrogen, N2, and hydrogen, H2, to form ammonia, NH3, a student is attempting to draw a particulate diagram, as shown below. Did the student draw a correct representation of the reaction? If not, what was the error the student made?Ethanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose. C6H12O62C2H5OH+2CO2 (a) Calculate the mass (g) of ethanol produced by the fermentation of 1.000 lb glucose. (b) Gasohol is a mixture of 10.00 mL ethanol per 90.00 mL gasoline. Calculate the mass (in g) of glucose required to produce the ethanol in 1.00 gal gasohol. Density of ethanol = 0.785 g/mL. (c) By 2022, the U. S. Energy Independence and Security Act calls for annual production of 3.6 1010 gal of ethanol, no more than 40% of it produced by fermentation of corn. Fermentation of 1 ton (2.2 103 lb) of corn yields approximately 106 gal of ethanol. The average corn yield in the United States is about 2.1 105 lb per 1.0 105 m2. Calculate the acreage (in m2) required to raise corn solely for ethanol production in 2022 in the United States.4-102 Aspartame, an artificial sweetener used as a sugar substitute in some foods and beverages, has the molecular formula C14H18N2O5. (a) How many mg of aspartame are present in 3.72 × 1026 molecules of aspartame? (b) Imagine you obtain 25.0 mL of aspartame, which is known to have a density of 1.35 g/mL. How many molecules of aspartame are present in this volume? (c) How many hydrogen atoms are present in 1.00 mg of aspartame? (d) Complete the skeletal structure of aspartame, where all the bonded atoms are shown but double bonds, triple bonds, and/or lone pairs are missing. (e) Identify the various types of geometries present in each central atom of aspartame using VSEPR theory. (f) Determine the various relative bond angles associated with each central atom of aspartame using VSEPR theory. (g) What is the most polar bond in aspartame? (h) Would you predict aspartame to be polar or nonpolar? (i) Is aspartame expected to possess resonance? Explain why or why not. (j) Consider the combustion of aspartame, which results in formation of NO2(g) as well as other expected products. Write a balanced chemical equation for this reaction. (k) Calculate the weight of C02(g) that can be prepared from 1.62 g of aspartame mixed with 2.11 g of oxygen gas.
- 89 A number of compounds containing the heavier noble gases, and especially xenon, have been prepared. One of these is xenon hexafluoride (XeF6), which can be prepared by heating a mixture of xenon and fluoride gases. XeF6 is a white crystalline solid at room temperature and melts at about 325 K. A mixture of 0.0600 g of Xe and 0.0304 g of F2 is sealed into a 100.0-mL bulb. (The bulb is heated, and the reaction goes to completion. Then the sealed bulb is cooled back to 20.0°C. What will be the final pressure in the bulb, expressed in torr?What is the mass of fish, in kilograms, that one would have to consume to obtain a fatal dose of mercury, if the fish contains 30 parts per million of mercury by weight? (Assume that all the mercury from the fish ends up as mercury (II) chloride in the body and that a fatal dose is 0.20 g of HgCl2.) How many pounds of fish is this?3.68 Magnesium is lighter than other structural metals, so it is increasingly important in the design of more efficient vehicles. Mg2+ ions are present in seawater, and the metal is often prepared by "harvesting" these ions and converting them to Mg metal. The average magnesium content of the oceans is about 1270 g Mg2+ per ton of seawater, and the density of seawater is about 1.03 g/mL. What is the molarity of Mg2+ ions in seawater? The design for a concept car calls for 103 kg of magnesium per vehicle. How many gallons of seawater would be required to supply enough magnesium to build one of these ears?
- Two general chemistry students working together in the lab weigh out 0.832 g of CaCl2 2 H2O into a crucible. After heating the sample for a short time and allowing the crucible to cool, the students determine that the sample has a mass of 0.739 g. They then do a quick calculation. On the basis of this calculation, what should they do next? (a) Congratulate themselves on a job well done. (b) Assume the bottle of CaCl2 2 H2O was mislabeled; it actually contained something different. (c) Heat the crucible again, and then reweigh it.When washing soda, Na2CO3, reacts with sulfuric acid, H2SO4, the equation is Na2CO3(aq) + H2SO4(aq) CO2(g) + H2O() + Na2SO4(aq) (a) Describe in words the meaning of this chemical equation. (b) Verify that the equation conforms to the law of conservation of matter.A power plant is driven by the combustion of a complex fossil fuel having the formula C11H7S. Assume the air supply is composed of only N2 and O2 with a molar ratio of 3.76:1.00, and the N2 remains unreacted. In addition to the water produced, the fuels C is completely combusted to CO2 and its sulfur content is converted to SO2. In order to evaluate gases emitted at the exhaust stacks for environmental regulation purposes, the nitrogen supplied with the air must also be included in the balanced reactions. a Including the N2 supplied m the air, write a balanced combustion equation for the complex fuel assuming 100% stoichiometric combustion (i.e., when there is no excess oxygen in the products and the only C-containing product is CO2). Except in the case of N2, use only integer coefficients. b Including N2 supplied in the air, write a balanced combustion equation for the complex fuel assuming 120% stoichiometric combustion (i.e., when excess oxygen is present in the products and the only C-containing product is CO2). Except in the case of use only integer coefficients c Calculate the minimum mass (in kg) of air required to completely combust 1700 kg of C11H7S. d Calculate the air/fuel mass ratio, assuming 100% stoichiometric combustion. e Calculate the air/fuel mass ratio, assuming 120% stoichiometric combustion.