Multiple Choice. Encircle the letter of the correct answer. 1. A chemical formula that shows the actual number and kind of atoms present in one molecule of a compound is called A. Covalent formula B. Empirical formula C. Ionic formula D. Molecular formula 2. A formula with the lowest whole number ratio of elements in a compound is called A. Chemical formula B. Distance formula C. Empirical formula D. Molecular formula 3. What is the molecular formula if the empirical formula is CH2O and the molecular mass is 180.18? A. CH2O В. С2Н4О2 C. C4H8O4 D. C6H12O6

Q: Part A A compound of X and Y is X by mass. The atomic mass of element X is the atomic mass of…

A: To determine the empirical formula , we need to determine mole ratio between X and Y. For this we…

Q: Information for Parts B, C, and D A compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a…

A: Given, Mass of sample of the compound = 100 g Percentage of of each element in the sample of…

Q: e this information to answer the questions below. Be sure your answers have the correct number of…

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Q: Martha sees a vile in her chemistry lab with the label C6H5O7. Her professor tells her it is…

A: Given formula: C6H5O7

Q: How many grams of H2SO4 are present in 3.1*1027 formula units of H,SO4 ? Round your answer to 1…

A: 1mole  of H2SO4 contains 6.023×2023 formula units 1mole of H2SO4 --- 98grams

Q: Caproic acid, which is responsible for the foul odor of dirty socks, is composed of C, H, and O…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Strontium phosphate, Sr3(PO.)2 is a crystalline substance used in medicine and industry. How many…

A: The given compound is Sr3(PO4)2. We have calculate  number  of P atoms present  in that molecule.…

Q: Phillip the freshman chemistry student was stirring his salt during heating. If some of the hydrated…

A: Given : Some mass of anhydrous salt is removed in the rod.

Q: A compound of potassium had the following percentage composition: K 44.90%; H O.5787%; P 17.78%. The…

A: Given : K = 44.90 % H = 0.5787% P = 17.78% O = 100 %- (44.90 % + 0.5787% + 17.78%) =  36.74%

Q: e empirical formula and the molecular formula

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Q: This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel…

A: Solution - According to the question - Given - Mole of Ni(CO)4 = 34 moles Mole of oxygen in 1 mole…

Q: (a) The number of atoms in 6.95 moles of potassium.

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Q: Silicon dioxide is the principle component in (window) glass. Approximately how many prc silicon…

A: We will calculate total number of proton

Q: Determine the molecular and empirical formulae for the two molecules shown below: CI CI H H…

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Q: A compound contains Carbon, Oxygen, and Fluorine. Determine the empirical formula (CXOYFZ) by…

A: First find the no. of moles of carbon atom by dividing with Avogadro no.

Q: Please check my work. Analyze the data for the sample to get the Empirical formula of CxHy Given…

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Q: Show ALL your work.  Remember to follow significant digit rules and show proper format in all…

A: Given,  The number of ions in 7.15 g of RbNO3 is:

Q: How many total atoms are present in the following compound? (Please answer using whole numbers.)…

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Q: Show all steps in the answers for the following questions and use significant figures in the…

A: * Moles = Mass / molar mass  * 1 mol = 6.022 × 10²³ atoms or molecules * Molar mass of Carbon = 12…

Q: A molecular compound is found to consist of 30.4% nitrogen and 69.6% oxygen. If the molecule…

A: Interpretation: A molecular compound is found to consist of 30.4% nitrogen and 69.6% oxygen. A…

Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: A sample of pentane contains 420 g carbon and 84 g hydrogen. Find: 1. total mass of sample: 2. …% of…

A: Pentane is a hydrocarbon with the formula C5H12. It is an alkene containing 5 carbons and 12…

Q: (c) Vitamin C contains carbon, hydrogen and oxygen only. It is 4.579% by mass of hydrogen. One…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: which has the correct number of atoms in one molecule of dichlorine momooxide A. contains three…

A: To determine No of Atom in a molecule, we must know the molecular formula of that molecule Then we…

Q: How many grams of LiHCO3 are present in 6.1*1024 formula units of LiHCO3? Round your answer to 1…

A: Given in the question, Compound = LiHCO3Formula unit = 6.1× 1024Avagadro no. = 6.023 × 1023No. of…

Q: 5. Determine the number of moles of the compound and determine the number of moles of each type of…

A: Applying concept of mole calculation.

Q: C3H2NC3H2N, 208.25 g/molg/mol Express your answer as a chemical formula.

A: Given Molar mass = 208.25 g/mol Empirical formula = C3H2N To determine the chemical formula

Q: how all work in your notebook, including dimensional c Combination/s 30z → 2 Fe2O3 a) How many moles…

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Q: Match the left column correctly with the right column.         Hg2CL2 molecular element Silicon…

A: The table is given below:

Q: 10. Calculate the number of moles represented by each of these: a) 127.08 g Cu b) 20.0 g calcium c)…

A: e) Given : Mass of americium = 5.0 mg

Q: How many oxygen atoms are there in 28.37 moles of carbon dioxide? Avogadro's number 6.022 x 1023…

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Q: Determine the mass in grams of 3.75 × 10²¹ atoms of zinc. (The mass of one mole of zinc is 65.39 g.)…

A: Mass of one mole of zinc is 65.39 g. Number of atoms of zinc are 3.75×1021 .

Q: The element X forms the oxide X,06. This oxide contains 57.52% oxygen by mass. Identify X by…

A: Mass of compound can be converted to moles using molar mass. Mole = MassMolar mass Given data:…

Q: How many Molecules are in 35.0 grams of IF3 ?     Select the correct answer: 3.13x10^24…

A: The given problem can be solved by using the formula given below as; 1 mole = Avogadro's Number…

Q: Compute the empirical formula of the following: 19.1% Sn and 80.9% I

A: Empirical formula of the compound can be calculate with the help of percentage composition of…

Q: only A, X and Z elements in different multiples of the empirical formula.  Using the data contained…

A: Recall the data, Element Percent Composition (%) Molar Mass (g mol-1) A 40.68 12.01…

Q: What is the empirical formula for a sample containing 81.70% carbon and 18.29% hydrogen? Multiple…

A: Empirical formula represents the simplest whole number ratio of the atoms present in the given…

Q: Monday's Bell Question: A sample of a compound was found to contain 54 grams of aluminum, 96 grams…

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Q: Clik in the answer box to activate the palette. Determine the empirical formula of a compound…

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Q: Calculate the formula mass of N2H4 to 2 decimal places.

A: To calculate the formula mass of N2H4.

Q: 13. What is the total number of atoms in each sample? b. 2.783 mol of methanol (CH3OH) d. 1.002 mol…

A: Hello, since your question has multiple parts, we will solve the first question for you. If you want…

Q: Acetaldehyde has the molecular formula C2H4O. Given 55.0 g of Acetaldehyde answer the following…

A: Given : Mass of C2H4O = 55.0 g Molar mass of C2H4O = Atomic mass of C X 2 + Atomic mass of H X 4 +…

Q: How many moles of water are in 2.83 g of Kolbeckite,ScPO4⋅2H2O Type in your numerical answer…

A: Given: Mass of ScPO4⋅2H2O = 2.83 g.

Q: (Show all calculations where appropriate.) 1. A student measured a 6.790 g sample of a hydrated…

A: Some molecules have water of crystallization. The water of crystallizations is not bonded directly…

Q: There are ______ atoms of carbon in 12.77 g manganese (III) oxalate. _______ grams of zinc arsenite…

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Q: please answer this question correctly. dont just give an answer, please include brackets,…

A: A mole is a unit of measurement for atoms, molecules, and ions just like other units are there for…

Q: O STOICHIOMETRY Using the Avogadro Number A copper atom has a mass of 1.06 x 10 22 g and a penny has…

A: This question have two subparts. In first part we will determine the mass of 1mol of copper atom and…

Q: Calculate the number of atoms in a 4.07x 10^ 3 g sample of calcium

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Q: How many grams of MgBr2 are in 5.61 x 1022 molecules of magnesium bromide (MgBr2)? Mg = 24.01 g/mol…

A: To calctulate the grams of magnesium bromide in given number of molecules, we would use Avogadro's…

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.