A compound is found to consist of 1.37g of iron and 2.62g of chlorine. What is the percent by mass of chlorine in the compound? A. 87.6% B. 65.7% C. 52.3% D. 34.3%

Q: Balance the following equations:

A: balancing of reaction is done to follow the conservation of mass.

Q: What mass (in grams) of vitamin C (C6H8O6) that contains 1.076 grams of carbons? Use mass percent

A:

Q: 1) Determine the number of moles in each sample: a) 38.2g sodium chloride b) 36.5g nitrogen monoxide…

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Q: gram sample of a compound is made up of 35.9 G of aluminum and 64.1 G of sulfur. the empirical…

A:

Q: Use the following terms to complete the statement: 6.02 x 1023 molecules 6.02 x 1023 atoms 4 atoms…

A: One mole of an element contain Avogadro's number 6.02×1023 of atoms of that element. Therefore, 1…

Q: 102.2 g NaCl = _______________ mol NaCl

A:

Q: Supply the structures of compounds A–I in the following synthesis scheme.

A: Alkane reaction with br2 leads to bromination and then reaction with (CH3)3COK abstract the proton…

Q: Compound A has a density of 4.5 g/cm3. Suppose you plan to mix 197 g Element A (18.9 g/cm3) with…

A:

Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: How many grams O in 221.8 g Fe(OH)g? Molar mass of Fe(OH)g is 106.867 Hint: 1 mole Fe(OH)3 has 3 mol…

A:

Q: grams of I?

A:

Q: [tot] 3Li(s) + (1/2)N2(g) → Li3N(s) ΔH(tot) = ___________? [1] 2Li(s) + 2HCl(aq) → 2LiCl(aq) +…

A: A numerical problem based on enthalpy change calculation, which is to be accomplished.

Q: 4) ½N2(g) + 02(g)= NO2(g) Kc 1.04 x I N2(g) + 202(g) = N204(g) Kc =7.42 x 1 %3D Calculate Kc for…

A: Calculate Kc...

Q: on is 1.00 g/mL. The molar mass of LizPO, is 115.79 g/mol and the molar mass of H20 is 18.02 g/mol.…

A:

Q: Balance the following equations and indicate whether theyare combination, decomposition, or…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: . How many MOLECULES of water are present in 9.27 grams of this compound?

A:

Q: A 5lb bag of sugar weigh 2.270kg. Sugar has a molecular weight of 342g/mole. How many moles are in…

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Q: A 14.56 g sample of phosphorus reacts with 41.38 g of chlorine to form only phosphorus trichloride…

A:

Q: Determine the formula weight of SrCl₂. Provide an answer to two decimal places.

A: Formula weight is the sum of the atomic weights of all atoms appearing in a given chemical formula.

Q: (a) 2C(s) + O2(s) → 2C0(g) (b) 2NAHSO3(s) Naz503(s) + 502(s) + H2O(g) (c) 2C(s) + 2H20g) CO23) +…

A: Equilibrium constant kc is the ratio of equilibrium concentration of products over the equilibrium…

Q: A 0.6951 g sample of nicotine was analyzed and found to consist of 0.5147 g C, 0.06047 g H, and…

A: Molecular formula of nicotine- C10H14N2   Formula for percentage of element in a molecule = (amount…

Q: (a) 2 Mg(s) + O2(g) → 2 MgO(s) kJ (b) 2 SO2(g) + 02(g) → 2 SO3(g) -139.9: kJ (c) 2 C,H2(g) + 5 02(g)…

A:

Q: 11.3 g of biphenyl in 30.3 g of benzene?

A: Given data are as follows Vapor pressure of pure benzene = 100.84 Torr Weight of biphenyl = 11.3 gm…

Q: Using the mass of the empty beaker and the mass of the beaker + KOH, calculate the mass of KOH…

A: Number of moles = Mass in g/molar mass

Q: a 5.000g sample that contained NaCl and BaCl2 *2H2O was heated. After heating the sample had a…

A: Given : Mass of sample of NaCl and BaCl2*2H2O = 5.000 g And mass of sample after heating = 4.688 g

Q: Calculations: Use the following steps to calculate the percent mass of CaCO3 in an eggshell. Use the…

A: It is given that the molarity of NaOH is 0.046 M and the molarity for HCl taken is 1M, And the…

Q: 47.9 grams of nitric acid are reacted with 39.3 grams of potassium sulfate. How much nitrate can be…

A: Consider the given information is as follows; Mass of nitric acid HNO3 = 47.9 g Mass of potassium…

Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28 g of carbon and…

A: Answer: option 2) 90.6% Carbon and 9.4% Hydrogen

Q: A 0.4017 g sample of nicotine was analyzed and found to consist of 0.2974 g C, 0.03494 g H, and…

A:

Q: Determine the formula weight of CaCl₂. Provide an answer to two decimal places.

A: FORMULA MASS: Every element in the periodic table has its own atomic masses. A chemical compound is…

Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: (a) A student has a 10.0g sample of CaBr2. Show the setup of the calculation to determine the number…

A: The number of the moles of any substance present in a sample is the ratio of the given mass of that…

Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: The mole is a really helpful way to count really small things. Are there other methods we use to…

A: Answer is explained below.

Q: Zn(s) +. ZnCl (aq) + H2(g) 3. HCl(aq) Cu(s) + HC(aq) CuCly(aq) +. H2g) - Mg(s) + HCI(aq) MgCl2(aq) +…

A:

Q: A sample is marked as containing 47.9 percent calcium carbonate by mass. How many grams of calcium…

A: Given, mass of a sample = 58.9 gThe sample contains 47.9 percent calcium carbonate by mass. The mass…

Q: Convert 56 grams of water to moles.

A: The number of moles(n) of a substance can be determined by the following equation n=wM where w=…

Q: A) Calculate the percent of oxygen by mass in iron(III)oxide. B) Calculate the number of grams of…

A:

Q: A) 6.81 x 1022 molecules B) 3.40 x 1022 molecules C) 8.91 x 1022 molecules D) 1.75 x 1022 molecules…

A:

Q: Hudrobromic acid t Potossium hydrovide7 Potassium bromide t HeO 70.50 M) (150m) (0.35M)( 295ml)…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: 47.00 g sample of MgCO3.XH2O is heated to move away the water. After that, the total mass was…

A: It is given that 47 g of sample is heated and the mass of the sample left is 22.74 g,

Q: BE’s are: C=O 799, C–H 413, O–H 467, O–O 498, H–H 432 kJ/mol CO2(g) + 4H2(g) → CH4(g) + 2H2O(g)…

A: By using this we can calculate the ∆H°rxn for both the reaction .

Q: Which has the greater volume- 10 g of hexane or 10 g of toluene? What is the volume of each?

A: We know, Density = Mass/Volume So, Volume = Mass/ Density

Q: Ocean water contains 3.4 sodium chloride by mass. What made of ocean water in gram contains 13.2 g…

A: Number of moles of a chemical compound is used to measure the amount of compound in the given…

Q: An automobile runs for 10 minutes and burns 47 g of gasoline.The gasoline combines with oxygen from…

A: To determine the mass of oxygen consumed in the given process.

Q: How many GRAMS of sodium are present in 1.41 grams of sodium chloride, NaCl ? ____grams sodium How…

A: Given,Mass of sodium chloride, NaCl = 1.41 gMoles of NaCl can be calculated as:

Q: (1) 2 H2 (g) + 02(g) → 2 H2O(g) AH = -484 kJ (2) N2 (g) + 3 H2(g) → 2 NH3 (g) ДН — —92 kJ (3) H20(1)…

A:

Q: A0.7547 g sample of nicotine was analyzed and found to consist of 0.5588 g C, 0.06565 g H, and…

A:

Q: 4. For each of the following chemical ........a. CH4(g) + O2(g) → CO2(g) + H2O(g)b. Al(s) + HCl(aq)…

A: (a)In a balanced equation number of atoms for every element and total change in the reaction are…

Q: How much 50X TAE would you need to prepare 1L of 1X TAE?

A: Concentration of stock solution = 50 X  Volume of new solution = 1 L  Concentration of new solution…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".