The elements X and Y form a compound that is 66.67% X and 33.33% Y by mass. The atomic mass of X is twice that ofY.

Q: A sample of C,H, has 7.20 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Given : The compound is C3H8. And number of H atoms in compound = 7.20 X 1024 atoms. The number of…

Q: Write the empirical formulas of the following compounds: (a) Al,Br6, (b) Na,S,O4, (c) N,O5, (d)…

A: Interpretation -  To write the empirical formula of the given compounds -  Al2Br6 Na2S2O4 N2O5…

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 molecular formula of Aspirin is C9H;O4. How many Aspirin molecules are there in a table that…

A: Given that:  Mass of aspirin = 200mg = 200mg×1g/1000mg = 0.2g Molar mass of C9H8O4 =…

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

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

Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: A sample of oxygen gas weighs 28.4 g. How many atoms of oxygen are present in this sample? The…

A: Here we have told that a sample of oxygen gas is weighed at 28.4 g. Now we have to tell how many…

Q: What is the molar mass of magnesium (Mg)? A)24.305 B)54.9380 C)48.610 D)35.45 E)22.99

A: Given      Element  = Magnesium  Molar mass = ?

Q: Which of the following samples of gases contains the greatest number of atoms? (Relative atomic…

A: 4th option is correct that is 13.0 g of C2H6

Q: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: 1. An organic compound is analyzed and found to be carbon 51.90%, hydrogen 9.80%, and chlorine…

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

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: Mass Spectrum for Tin (Sn) 120 100 100 80 58 60 40 20 0. 115 116 117 118 119 120 121 mass (amu)…

A: Welcome to bartleby ! We have to calculate average weight of Sn

Q: A sample of CO2 has a mass of 50.0 grams. What is the number of molecules of carbon dioxide in the…

A: We know,Number of mole = mass of sample (g)molar mass (gmol-1)and1 mol = 6.022x1023 molecule

Q: 1. Calculate the mass of each sample. a. 1.05 x 10 26 atoms of neon, Ne(g) b. 8.72 x 1021 molecules…

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Q: Matter is neither created nor destroyed in a chemical reaction. Thus, the mass of the products of a…

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Q: 1. 2 moles of Ar atoms contain how many atoms?           A.   1        B.   1.204 x 1024…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Determine the empirical formula for a compound that contains 34.1 % nitrogen by mass and 65.9 %…

A: The question is based on the concept of elemental analysis. we have to calculate empirical formula…

Q: When a chemical reaction occurs, atoms rearrange to form new compounds, but no new atoms are created…

A: Figure shows A is single element. There are 4 A atoms present in the reactant side. B is diatomic…

Q: 28) Determine the mass of the following compound: 0.0146 mol KOH A) 56.11 g B) 0.819 g C) 8.19 g 29)…

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Q: 4.00 g sample of a compound was analyzed and found to contain 1.54 g of silicon and the rest was…

A: The simplest formula of compound , which represent lowest whole number ratio of elements present in…

Q: A compound has an empirical formula of C 8H 17. If a sample of the compound contains 4.90 grams of…

A: To solve this problem we will first find the number of moles of carbon from the given mass then…

Q: 15. An oxide of lead contains 90.65% Pb, by weight. The empirical formula is: * Pb02 O Pb304 Pbo Pb…

A: Pb, atomic mass = 207 g/mol Percentage = 90.65 Relative number of moles = 90.65/207 =  0.437 O2,…

Q: A 150.0 gram sample of a white powder contains 61.05 g of carbon, 7.65 g of hydrogen, and 81.30 g of…

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Q: .The compound, X₂O₃, contains element X and oxygen atom combined in a ratio of 2.12 grams of X to…

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Q: Sucrose Sugar C12H22O11 Heptane One of several components in gasoline C5H12 Sulfuric…

A:

Q: 1. A mole of hydrogen gas (H₂) is compared with a mole of lead (Pb). You can be certain that the…

A: One mole represents 6.023 x1023 particles. So, one mole of a substance = 6.023 x1023…

Q: Dichlorodifluoromethane (CF2CI2) is an Ozone-depleting substance. It belongs to a class of compounds…

A: Atomic Weight of C = 12.01g/mol Atomic mass of Fluorine = 19.0g/mol Atomic mass of Chlorine =…

Q: The average atomic mass of carbon is 12.011 amu. Assuming you were able to pick up only one carbon…

A: Given that, the average mass of carbon is 12.011 a.m.u. The given mass of any of the carbon isotopes…

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

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Q: A carbon- hydrogen-nitrogen compound has a molar mass of 114.20 g/mol and it has the following…

A: Empirical formula of a compound may be defined as the formula which gives simplest whole number…

Q: A brass alloy contains 87.7% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

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Q: Chemical formulas can be written as empirical formulas, molecular formulas, or structural formulas.…

A: The solution is given below -

Q: Carbon and oxygen form no fewer than five different binary compounds. The mass percentages of carbon…

A: All five compounds are made up of Carbon and Oxygen. As the percentage mass of Carbon of the five…

Q: Sodium and nitrogen form two different binary compounds. The percentages in the two compounds are:…

A: a) Step 1: Conversion of mass % to grams. Assume the weight of the compound is 100 g. Thus, in 100 g…

Q: Samples of several compounds are decomposed and the masses of their constituent elements are shown…

A: Calculate moles of each element by dividing the given mass by their molar mass & convert them…

Q: Complete the table: Element Mass Moles Number of Atoms Na 37.0 mg _____ _____ C _____…

A: 1. Calculation for moles of Na: moles =massmolar massmoles of Na=37.0×10-3 g23.0 g/molmoles of…

Q: A chemical compound containing hypothetical elements Av, Bw, Cx, Dy, Ez has mass percentages of…

A: We have to determine the Molecular formula of a compound having following hypothetical elements.

Q: Two elements X and Y combine to form two compounds with the following compositions: Compound % Mass…

A: In a compound the particular element is present in the weight ratio .

Q: empirical formula and formula mass of the compound

A: Empirical formula is the formula which consists atoms of each element in simple whole number ratio.…

Q: Dic orodifluoromethane (CF2C12) is an Ozone-depleting substance. It belongs to a class of compounds…

A: Given that, 10.0 g of CF2Cl2. Also, the atomic weights are  C = 12.01, F = 19.0, Cl = 35.45. The…

Q: A sample of terbium contains 3.01×1025 atoms. What is the total mass of this sample?The molar mass…

A: It is required to calculate the mass of 3.01 x 1025 atoms of terbium and the molar mass is 158.9…

Q: What is the mass of 8 atoms of copper in grams? 8.44 x 10-22 g 1.33 × 10-23 g X 508 g 7.58 x 1022 g…

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Q: Beryl (emerald) is a precious gemstone with the formula:  Be3Al2(SiO3)6.  MM Be3Al2(SiO3)6  =…

A: a. Given, 1.00 g of beryl

Q: 5. Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

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

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 solve thia problem first we have to calculate the number mole of C and H in the given sample.  By…

Q: A particular carborane has the following mass percentages: 21.30%C and 67.09%B. What is the…

A: