Page 8 of 35 Your Learning Points 4 Osiagwu, Chiemeka K Iron metal reacts with elemental sulfur to produce iron (III) sulfide. What mass of iron is required to react with 13. 61 g of sulfur?
Q: What mass of oxygen will be produced by heating 400. g of potassium chlorate? KCIO3(s)->KCI(s)+02
A:
Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+OX2⟶2MgO What mass, in…
A: The balanced reaction taking place is given as, => 2 Mg + O2 → 2 MgO Given: Mass of Mg taken =…
Q: How many grams of Cl, are needed to form 82.4 g of AlCl, ? 2 Al(s) + 3 Cl, (g) 2 AICI, (s)
A: two moles of Al reacts with 3moles of chlorine gas forms 2 moles of AlCl3 Calculation of no of…
Q: 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A: Given that: Compound X mass = 6.50 gMolecular mass = 176 g/mol Mass of CO2 = 9.75 gMass of H2O =…
Q: How many moles of carbon dioxide could be produced if 10 moles of octane, C gH 18, are combined with…
A: Given No. of mole octane = 10 moles No. of moles oxygen= 20 moles find no. of moles CO2
Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…
A: Given, mass of O2 = 2.81 g Mass of Mg = 1.51 g Molar mass of MgO = 40.3 g/mol Molar mass of Mg =…
Q: Consider the formation of lithium nitride from lithium and nitrogen: 6 Li + N2 → 2 Li3N How much Li…
A:
Q: 2. You start with 2.46 g of KCIO345) and heat it. Use stoichiometry to calculate the mass (g) of KCI…
A:
Q: TCVICW TCONSTAITSIT CIodIc TaDIC You may want to reference (Pages 245 - 246) Section 7.8 while…
A: Since when 1 mole of CaCN2 is reacting, 2 moles of NH3 is produced hence moles of NH3 produced =…
Q: 8.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A: Recall the data, mass of X =8.50 g, MM=44 g mol-1 mass of CO2=25.50g, MM=44 g mol-1 mass of…
Q: Lead is found in Earth's crust as several different lead ores. Sup- pose a certain rock is 38.0% PbS…
A: Given that: Rock consists of: Galena…
Q: What mass, in grams, of NO2 is needed to form 132.9 g of NO? A 3NO2(g) + H20() → 2HNO3(aq) + NO(g) x…
A:
Q: 6.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A: We need to find emperocal formula then emperical mass
Q: 6.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A:
Q: Suppose that a device is using a 10.0-mg sample of silicon that is doped with 1 x 10-5% (by mass)…
A:
Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+O2⟶2MgO What mass, in…
A: Number of moles of Mg and O2 are calculated as follows: No. of moles of Mg=massmolar mass=1.41…
Q: Determine the mass of lithium hydroxide produced when 0.83 g lithium nitride reacts with water,…
A: The mass of lithium hydroxide can be calculated as follows
Q: Hydrocarbon methane (CHa) during combustion produces carbon dioxide and water. On the other hand,…
A: Introduction The mass of any particular product or reactant species can be derived if we apply…
Q: Suppose 8.70 g of CH4 is allowed to burn in the presence of 15.00 g of oxygen. CH:(9) +202(9)→CO2(9)…
A: Given, the chemical reaction as follows,CH4(g)+2O2 →CO2(g)+2H2Oamount of CH4 for reaction =8.70…
Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…
A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol
Q: d If nickel(II) formate is heated to 300 °C in the absence of air for 30 minutes, the salt…
A: Nickel formate decomposed to form nickel powder. Each mole nickel formate produces 1 mol of nickel.…
Q: The reusable booster rockets of the U.S. space shuttle employ a mixture of aluminum and ammonium…
A:
Q: What mass of sodium iodide (Nal) will react with 7.82 grams of chlorine? Nal + C12 NaCl +
A: Balanced equation for the reaction is 2 NaI…
Q: 7.00 g of a certain Compound X, known to be made of carbon and hydrogen, and to have a molecular…
A: Given : Compound is made up of carbon and hydrogen only. Mass of carbon dioxide i.e CO2 produced =…
Q: SEP Apply Mathematical Concepts If 50.0 g of silicon dioxide are heated with an excess of carbon,…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Consider the balanced reaction of magnesium and oxygen. 2 Mg + O2 2 MgO What mass, in grams, of MgO…
A: The given chemical reaction between magnesium and oxygen isas follows, 2Mg +O2 →2MgOamount of Mg…
Q: 8.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A: Given : Mass of Compound X = 8.50 g Molar mass of Compound = 128 g/mol Mass of CO2 = 29.22 g Mass…
Q: CHale + 5 0 e) How many moles of 0, are required to produce 17.8 moles of CO,? →3 COl + 4 H,0 'a(g)…
A: For 3 moles CO2 ------ 5 moles O2 17.8 moles CO2 ------- ? =…
Q: 39. What amount of phosphorus produces 8.80 mol of phosphorus trichloride? P4l6) + 6Cle) →4PC1316)…
A:
Q: What mass of SbF3 (179 g/mol) is needed to produce 1.00 g of Freon-12, CCl2F2 (molar mass = 121…
A: The balanced equation of the reaction is given and the moles of CCl2F2 is calculated as shown,
Q: 8. To obtain pure lead, lead (II) sulfide is burned in an atmosphere of pure oxygen. The products of…
A: Here lead sulphide reacts with oxygen to give lead and sulphur trioxide.
Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+OX2⟶2MgO What mass, in…
A:
Q: From question 8, when 3.56 g beryllium is heated with 2.55 g of phosphorus, beryllium phosphide…
A:
Q: 5.0 kg of hydrogen is reacted with 31 kg of oxygen. The experiment yields 28 kg of water. Calculate…
A: Hydrogen and oxygen will combine to form water molecules. The balanced chemical equation for the…
Q: if you have 311.1 g of chromium that react with oxygen how many moles of chromium (III) oxide will…
A:
Q: Calculate the mass of sodium chlorate that must decompose to form 6.5 g of oxygen. 2NaClO 3(s) →…
A: Consider the given information is as follows; Reaction: 2 NaClO3(s) → 2 NaCl(s) + 3…
Q: What is the molar mass of rhodium (III) chromate?
A: We need to calculate the molar mass of Rhodium (III) chromate.
Q: A 0.2121-g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was…
A:
Q: 8.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…
A:
Q: 1. Balance these equations. a. Al(s)+O2(g)→A1½O3(s) b. N2(g)+H2(g)¬NH3(g)…
A: Since, We know that, Balanced equation means number of atom in reactant side is equal to number of…
Q: In the preparation of Boric acid (MW = 61.81 g/mol), 140 grams of borax (MW = 381.2 g/mol) dissolved…
A: Stoichiometry refers to relationships between the moles of reactants used and products formed in a…
Q: Calculate the mass of material in 0.11 moles of Na2CO3 ( Na=23, C=12,0=16).
A: The given can be solved by using the formula as; Moles=MassMolecular mass…
Q: A piece of aluminum foil 1.00 cm square and 0.570 mm thick is allowed to react with bromine to form…
A: Using the given area and thickness, find the volume of aluminum foil.
Q: How many grams of Cl2 are needed to form 76.6 g of AlCl, ? 2 Al(s) + 3 Cl,(g) 2 AICI, (s) ->
A: Given Reaction 2Al(s) + 3Cl2(g) → 2AlCl3 Mass of AlCl3 = 76.6 gram Mass of Cl2 = ?
Q: Nitric oxide is made from the oxidation of ammonia. What mass of nitric oxide can be made from the…
A: Number of moles of a substance in given mass of it: Number of moles=Given massMolar mass
Q: Consider the balanced reaction of magnesium and oxygen. 2Mg+O2⟶2MgO2Mg+OX2⟶2MgO What mass, in…
A: The balanced reaction taking place is given as, => 2 Mg + O2 -------> 2 MgO Given : Mass of…
Q: A chemist combines 4.9g of hydrogen gas with 9.4 grams of nitrogen gas to form 11.4g of ammonia.2.9g…
A: Law of Conservation of mass :-It states that for a chemical reaction mass is conservedor mass of…
Q: 4) What mass of ZnCl, can be prepared from the reaction of 3.27 grams of zinc with 3.30 grams of…
A: Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen. The equation for the balanced…
Q: Suppose 8.60 g of CH4CH4 is allowed to burn in the presence of 17.00 g of oxygen. How much (in…
A: Given that 8.60 g of methane reacts with oxygen to form carbondioxide and water . Number of moles of…
Step by step
Solved in 2 steps with 2 images
- What is the Ksp of Zn3(PO4)2 (MW = 320.8 g/mol) if its solubility in water at 25 °C is 4.9 x 10-5 g/L? format for the scientifc notation 1.0 x 10^-1A chemist obtained the following data for the percent compound Z in triplicates (n=3) of an insecticide preparation: 7.47, 6.98, and 7.27. Calculate the 90% confidence limit for the mean of the data assuming that only information about the precision of the method is the precision for the three data points. 7.24 ± 0.74% 7.24 ± 0.13% 7.24 ± 0.42% 7.24 ± 0.27%Vanadic ion, V3+, forms green salts and is a good reducingagent, being itself changed in neutral solutions to thenearly colorless ion V(OH)4+. Suppose that 15.0 mL of a0.200-M solution of vanadic sulfate, V2(SO4)3, was neededto reduce completely a 0.540-g sample of an unknownsubstance X. If each molecule of X accepted just oneelectron, what is the molecular weight of X? Suppose thateach molecule of X accepted three electrons; what wouldbe the molecular weight of X then?
- What is the concentration of a 62.0 % (w/w) concentrated nitric acid (HNO3, Mr = 63.0 g/mol) solution (density: 1.32 g/cm3) in mol/dm3 (molarity) and g/dm3 (mass concentraion) units? How many cm3 do you need to dilute into 200.0 cm3 from that concentrated nitric acid if you would like to have a solution with a concentration of 3.0 mol/dm3 ?When drinking water is disinfected with chlorine, an undesired byproduct, chloroform (CHCl3), may form. Suppose a 70-kg person drinks 2 L of water every day for 70 years with a chloroform concentration of 0.08 mg/L (the drinking water standard). Potency factor for chloroform = 6.1 x 10-3 (mg/kg-day)-1 The upper-bound cancer risk for this individual. a. 0.545 b. 5.45x10-6 c. 5.45x10-4 d. 5.45x10-10 e. 14x10-6 If a city with 300,000 people in it also drinks the same amount water described in the above question, how many extra cancers per year would be expected? Assume the standard 70-year lifetime. a. 0.163 b. 1.63x10-4 c. 1.63x10-3 d. 1.63x10-6 e. 6x10-2Organic carbon in seawater can be measured by oxidation to CO2 with K2S2O8, followed by gravimetric determina- tion of CO2 trapped by a column of Ascarite. Water weighing 6.234 g produced 2.378 mg of CO2 (FM 44.010). Find ppm carbon in the seawater.
- Prepare 100ppm of Cd (NO3).4 H2O in a 1 Liter1. Which of the following compounds can form hydrogen bonds with water?a. octaneb. HClc. NaCld. acetic acid2. Maria wants to determine the percent water content of an unknown hydrate of AB. Given the following data:mass of empty crucible - 12. 2784gmass of AB · xH20 + crucible - 17.4960gmass of AB + crucible - 15.1314gCalculate the % water content of the hydrate3. From the above data, give the correct formula for the hydrate. (AB₂ Molar mass = 129.84 g/mol)A chemist obtained the following data for the percent compound Z in triplicates (n=3) of an insecticide preparation: 7.47, 6.98, and 7.27. Calculate the 90% confidence limit for the mean of the data assuming that only information about the precision of the method is the precision for the three data points.
- 10.5mL (mw 106) of benzaldehyde and 2.9g(3.63mL, mw 40) of acetone react with 5g of NaOH and 25mL of Ethanol to form 6.7g of Dibenzalacetone. What is the theoretical, actual and percent yield?What is ΔSsurr for a reaction at 28.6 °C with ΔHsys = 38.9 kJ mol-1 ? Express your answer in J mol-1 K-1 to at least two significant figures.If exactly 200.0 mL of an aqueous solution that is 1.037E3 ppb Pb(NO3)2 (331.2 g/mol) is mixed with 100.0 mL of an aqueous solution that is 3.090E9 fM KI (166.00 g/mol), how many micrograms of solid PbI2 (461.01 g/mol, 6.16 g/mL) are formed? Assume complete reaction.