A scientist is trying to discover information about an unknown metal in a compound. The formula for the compound is believed to be XBr3 where X is the unknown metal. The scientist determined that a 4.737 g sample of this compound contains 5.329×10−2 mol Br . Calculate the atomic mass of the unknown metal, X .

Q: The density of carbon tetrachloride is 1.59 g/mL. How many chlorine atoms are present in 55 mL of…

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Q: analysis of a sample of a compound shows that 0.131 g H,  4.61 g CI and 8.32 g of O are present…

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Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO,…

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Q: What mass of HCl, in grams, is required to react with 0.590 g of Al(OH); ? Al(OH)3 (s) + 3HC1(aq) →…

A: Al(OH)3  + 3HCl  ----------------> AlCl3   +  3H2O Molar mass of Al(OH)3 = 78 g/mol molar mass of…

Q: Consider a compound that produces 5.0 g Al and 19.7 g Cl a. What is the empirical formula of this…

A: Given that : Mass of Al = 5.0 g Mass of Cl = 19.7 g The molar mass of Al is 26.98 g/mol. The molar…

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Q: hat is the mass in kilograms of 5.6 x 1027 molecules of carbon tetraiodide

A: The number of moles is the amount of an atom present in the compound containing that atom. It is…

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: Based on the law of conservation of mass, how many grams of hydrogen gas, x, are formed by the…

A: Given, 66.0 g zinc + 72.9 g hydrochloric acid produces 136.3 g zinc chloride+ x g hydrogen gas. We…

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and  0.440 g of…

A: To answer this first of all we have to convert grams into moles and we have to determine the simple…

Q: The density of water of a lake is 1.25 g mL-1 and one kg of this water contains 92 g of Na+ ions.…

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Q: What is the mass of 1.67 x 10^15 atoms on MN, 6.45 x 10^23 atoms of N, and 3.40 x 10^25 atoms of C…

A: Given :-  number of Mn atoms = 1.67 × 1015 atoms  number of N atoms = 6.45 × 1023 atoms  Number of C…

Q: If the same amount of electricity that is used to produce 500 g copper metal (Cu Cu") is used to…

A: Given: Mass of Cu produced = 500 g. The moles of Cu produced = MassAtomic mass = 50063.55 = 7.868…

Q: Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids.…

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Q: A 12.3 g sample of a compound known to consist of only carbon and hydrogen was found to be 14.40 %…

A: Mass of sample = 12.3 g Hydrogen percent by mass = 14.40 % Mass % = Mass of solutemass of…

Q: 1. The number of atoms in 2.0 mol of nitrogen gas, N2, is: a. 1.8 x 1024 b. 2.4 x 1023 c. 1.2 x 1024…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Opal is a hydrated form of silica. If a laboratory analysis of a sample of opal reveals it to…

A: Hydrated form of silica means some of water molecules are present in form of H2O in silica compound.

Q: 1. Convert 25.2 g into mg. (1000 mg = 1 g) 2. Convert 3 x 105 g into kg. (1000 g = 1 kg) 3. What is…

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

Q: Hydrothermal vents produce many types of compounds. One such compound consists of the elements…

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Q: Using the average atomic mass, calculate the mass in grams of each of the following samples.…

A: Given information,     4.50 x 103 mol of germanium, Ge

Q: 250(g) + 02 (g) + HCI (g) NH3(g) MgCO3 250 (g) NH,CI (s) + CO2(g) Mgo (s) +

A: Entropy denotes by a symbol 's' . Entropy of a universe increasses spontaneously.   Second law of…

Q: Fluoride ion is added to drinking water to prevent tooth decay. What is the mass in grams of sodium…

A: Given Formula units = 1.19 × 1019

Q: Consider the following compound: Sr3(PO4)2 *4H2O -Calculate the mass, in grams, of Sr present in…

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Q: For the reaction "P₄(s) + 6 Cl₂(g) → 4 PCl₃(l)", if 125 g of P₄ is reacted with 323 g of Cl₂, what…

A: Phosphorus reacts with chlorine to form phosphorus trichloride. The equation for the balanced…

Q: 1 mol 197.0 g 1. X 4 = 1 mol 6.022 x1023

A: 1. mole : 1 mole of any substance contains avogadro number (NA) of substances     i.e 1 mol =…

Q: Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the…

A: Given :-  Mass of Iron present in 2.64 × 1013 red blood cells = 2.90 g  To be calculated :-  Number…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

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Q: A well-known reagent in analytical chemistry, dimethylglyoxime, has the empirical formula C2H4NO. If…

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Q: Calculate the mass in grams of 1.8 x 10^17 KCl molecules

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Q: a What is the maximum mass of ammonia that can be produced from a mixture of 1.00 x 10 g N2 and 5.60…

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Q: What is the mass, in grams, of 1.67 x 10^15atoms of Mn

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Q: chalcone 208.3 g/mol

A: A) mass of acetophenone = ( 1.20mL ) • ( 1.03 gmL-1 ) = 1.236g  B) mass of Benzeldehyde = ( 1.40mL )…

Q: The composition of a compound was found to be 66.7% C, 25.9% N and 7.41% H by mass? What is the…

A: Empirical formula represnts number of atoms of various elements present in a molecule in simple…

Q: empirical formula?

A: We can determine the empirical formula by taking the molar ratio of elements.  We can take the…

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: What is the mass of 5.27 x 1021 water molecules ? 6.75 g 5.27 g 0.158 g 1.25 g

A: 1 mole of any substance contains 6.023 × 10^23 molecule of constituent atoms , ions. 6.023× 10^ 23…

Q: If a laboratory analysis of the mineral aegirine yields 10.0% Na, 24.2% Fe, 24.3% Si, and 41.5% O,…

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Q: Sucrose has the molecular formula C12H22O11. If a sucrose sample contains 3.6 x 1024 atoms of…

A: Given,  Molecular formula of the sucrose = C12H22O11  Number of atoms of carbon = 3.6 x 1024 atoms…

Q: formula units

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Q: A 6.40 g sample of a compound is burned to produce 8.37 g CO, 2.75 g HO, 1.06 g N, and 1.23 g SO.…

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Q: The molar mass of ibuprofen is 206.3 g mol-1 and a standard tablet contains 0.2 g ibuprofen.  What…

A: Given that : The molar mass of ibuprofen = 206.3 g/mol The mass of ibuprofen in a tablet = 0.2 g

Q: If the same amount of electricity that is used to produce 500 g copper metal (Cu Cu") is used to…

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Q: A sample of a compound was found to contain 54 g of aluminum, 96 g of oxygen, and 6 g of hydrogen.…

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Q: What is the mass of 1.36 x 1022 molecules of HCI? O 36.5 g 1610 g

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Q: During physical activity, lactic acid (Molecular mass = 90.08 g/mol) forms in muscle tissue and is…

A: Given  mass % of C = 40.0 % mass % of H = 6.71 % mass % of O = 53.3 %  Required data - molar mass of…