A compound has an empirical formula of C 8H 17. If a sample of the compound contains 4.90 grams of carbon, how many grams of hydrogen does the sample contain?   1.86 g   1.14 g   0.411 g   2.43 g   0.874 g

Q: How many bromine molecules, Br2, have a mass equal to 31.8 g?

A: 1.20 *10^23 molecules.

Q: A sample of monochloro pentaborane (9), B5H8Cl, has a mass of 20.7 g. What amount, in moles, does…

A: Chemical formula of monochloro pentaborane = B5H8Cl.Above compound contains B, H and Cl atom.

Q: A 2.00 g sample of an organic compound contains 0.675 g of carbon. How much carbon would a 4.00 g…

A: ◼️ Given that:  2.00 g of organic sample has 0.675 g Carbon  Carbon in 4.00 g of same organic…

Q: A molecular compound is found to consist of 26.0% nitrogen and 74.0% oxygen. If the molecule…

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Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: In order to calculate the empirical formula of each compound , we first need to convert the grams of…

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: What is the mass of one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

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Q: A compound has a molar mass of 123.22 g/mol. What is the molecular formula of a substance that has…

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Q: A compound has a molar mass of 155.5 g/mol. The empirical formula of the compound is C₂H₇. How many…

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Q: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g…

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of…

Q: A compound has an empirical formula of C 2H 3. If a sample of the compound contains 4.36 grams of…

A: Empirical Formula :- It is the simplest ratio of number of atoms present in a compound. The ratio is…

Q: A compound has an empirical formula of C 8H 15. If a sample of the compound contains 3.89 grams of…

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Q: A sample of glucose, C6H12O6, contains 1.240×1021 carbon atoms. Part A: How many atoms of hydrogen…

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Q: A compound has an empirical formula of HgCl. If the molecular mass of the compound is 472.2 g/mol,…

A: Here we are required to find the molecular formula.

Q: An unknown compound contains 53.34% rhodium, 9.338% carbon, and the rest is oxygen. a) If you assume…

A: Given a compound with the composition: Rh = 53.34 % C = 9.338 % O = 100 - (53.34 + 9.338) % = 37.322…

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: A compound known to contain only the elements carbon and oxygen was analyzed and found to contain…

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Q: How many atoms are there in 350 g of arsenic?

A: Number of moles = mass/molar mass  1 mol = 6.022 × 1023 atoms

Q: Calculate the mass in grams of 1.25 x 1023 molecules of carbon monoxide. O 5.82 g carbon monoxide O…

A: A mole is basic unit (atom/molecule / ion).

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

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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 chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Weight of Co = 0.672g Weight of As = 0.569g Weight of oxygen = 0.486g Atomic weight of Co =…

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

A: We have to calculate molar mass of metal and it's identity.

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

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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: 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: How many oxygen atoms are there in 52.06 g of carbon dioxide? 6.022 x 1023 5.088 x 1023 1.422 x 1024…

A: Given data contains, Mass of carbon dioxide=52.06 g

Q: Čalculate the mass of 1.92 x 1018 atoms of Mg. O 2.73 x 10 10 g O 8.96x 10:5 g O 1.62 x 10-4g O 7.75…

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Q: Which of the following DOES NOT CONTAIN 6.02 x 1023 particles (atoms, molecules, ions) 1 mole of…

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Q: What is the total number of atoms contained in 2.00 moles of iron? O 118 O 6.02 x 1023 O 1.2 x 1024

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Q: Fructose is a common sugar found in fruit. Elemental analysis of fructose gives the following mass…

A: Percentage of each element is as follows: Carbon - 40 % Hydrogen – 6.72% Oxygen – 53.28 %…

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

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Q: How many atoms are present in 52.0 grams of iron?

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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.