How many cobalt atoms are in 345 g of cobalt? Calculate the molar mass of carbon tetrachloride, CCl4. What's the mass of 4.23 moles of sodium chloride, NaCl?

Q: Question 8: For sugar (C12H22011), what is the percentage of carbon, hydrogen and oxygen in the…

A: 8.  molecular formula of sugar = C12H22O11 Number of oxygen atoms in Sugar = 11 Number of carbon…

Q: When 1.615 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 5.545 grams…

A: The molecular formula is a formula generated from molecules that represents the total number of…

Q: molecular weight

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Q: a. How many ATOMS of boron are present in 7.41 grams of boron trichloride? 3.805x10^21 atoms of…

A: Molecule given = BCl3 1 molecule of BCl3 = 1×6.022 ×1023 Molar mass of BCl3 = 117.3 g/mol 117.3 g of…

Q: An unknown compound contains only carbon, hydrogen, and oxygen. Using combustion analysis, you…

A: Here we are required to find the empirical formula of the compound.

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: Be sure to answer all parts. How many H atoms are in 58.5 g of isopropanol (rubbing alcohol), C3H₂O?…

A: Amount of isopropanol = 58.5 gm

Q: What is the mass in grams of 7.3 x 1024 molecules of lactic acid (C3H6O3), the compound responsible…

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Q: A compound isolated from the rind of lemons is found to be 88.14% carbon and 11.86% hydrogen by…

A: As this question has multiple questions, we are solving first three for you. If you want remaining…

Q: plucheme & Calculate the Mass (in grams) of 6.97 x 1023 Compounds of (NH4)2S

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Q: 8. Which of the following has a greater mass? A. 2.0 atoms of lead B. 5.1 x 1023 mole lithium Write…

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Q: Diamonds are a crystalline form of pure carbon, and their mass is measured in units of carats (1…

A: Given: Mass of diamond = 84.37 carat And 1 carat = 200 mg = 0.200 g…

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

A: 1- First calculate the moles of compound XBr3  moles of XBr3 = ( moles of Br ) / 3  moles of XBr3 =…

Q: How many Moles of magnesium phosphate do you have if you have 8.257 x 10^25 phosphate ions

A: Divide ion by Avogadro number to get mole

Q: natural product has the molecular formula C25H34O4. What is the mass of 3.31×108 molecules of this…

A: Molecular weight of the compound is  =(12×25)+(34×1)+(16×4) =398 g/mol Where Atomic mass of C ,H And…

Q: Calculate the mass in grams of 4.46×1024 molecules of propylamine. The chemical formula for…

A: Avogadro constant = 6.022 × 10²³ /mol The moles of propylamine can be calculated asNo. of moles of…

Q: How many atoms are in 45.8 grams of Al? And How many moles are in 4.75 x 1024 molecules of HCl?

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Q: . He can tell from elemental analysis that the polymer is made up of only three elements: carbon,…

A: To solve this we have to consider the mass of polymer = 100.0g  Then  Mass of C = 56.45 g  Mass of H…

Q: Consider a sample of calcium carbonate, CaCO3 (100.09 g/mol), in the form of a cube measuring 2.88.…

A: The length of the cube of calcium carbonate, CaCO3 =2.88 cm The density of the calcium carbonate,…

Q: A thyroid condition called goiter can be treated by increasing iodine in the diet. Iodized salt…

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Q: Calculate the mass in grams of 2.65 x 1023 molecules of sulfur dioxide O 28.2 g sulfur dioxide O…

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Q: A chemist must determine the empirical formula of an ionic compound composed only of iron and…

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Q: A balloon filled with neon gas, Ne, contains 9.870 x 1025 atoms. Use the molar mass of neon, 20.18…

A: Given,number of atoms of neon ( Ne ) gas = 9.870 x 1025 atomsmolar mass of Ne = 20.18 g/mol

Q: If 1.000 g of tin metal reacts with 0.480 g of fluorine gas, what is the empirical formula of the…

A: No of moles of tin(Sn) =mass of tin(Sn) /molar mass of tin(Sn) =1/118.72 mol of Sn =0.0084232 mol of…

Q: 1. Sphalerite is a zinc sulfide (ZnS) mineral and an important commercial source of zinc metal. The…

A: (1) Given that , mass of zinc sulfide = 5.00×103 g = 5000 g    Now, from following Reaction -  2ZnS…

Q: Calculate the amount of  anions (in moles) in 8.6 g of magnesium perchlorate. Express your answer…

A: Magnesium perchlorate, Mg(ClO4)2 dissociates into three ions as given by the equation: Mg(ClO4)2 →…

Q: O 4.29 x 10 10 g What is the mass of 4.63 x 1012 atoms of Fe? O 1.08 x 10 10g O 9.76 x 10 10 4.29 x…

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

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Q: 74. A throat lozenge contains 5.0 mg of menthol, which has the formula C10H20O. How many moles of…

A: Given : 74. 1. How many moles of menthol are in 5.0 mg of menthol? 2.What is the mass in grams of…

Q: Calculate the mass of fluorine (in g ) contained in 61.0 g of copper(II) fluoride.

A: 1.Copper (ll) flouride is CuF2 . 2. Given mass of CaF2 is 61. 0 g    Mass of fluorine (F) =?

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

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: Calculate the amount of anions (in moles) in 24.4 g of calcium iodate. Express your answer with…

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Q: Chromium(III) oxide can be made from the reaction of sodium dichromate and ammonium chloride. What…

A: Given, mass of  sodium dichromate (Na2Cr2O7) = 108.7 g mass of ammonium chloride (NH4Cl) = 61.6 g…

Q: A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields…

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Q: 1. Calculate the number of moles of chlorine in 2.34 x 1019 molecules of chlorine.

A: The question is based on mole concept. we have to calculate number of moles in given molecules of…

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

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Q: How do you calculate the number of grams of a molecule formed from a specific mass (g) of one of the…

A: By checking properly, the stoichiometry of the specific element whose mass is given in the compound,…

Q: 8. How many moles of magnesium is 3.01 x 102² atoms of magnesium?

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Q: he mass percent o

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.