Question 3.e of 33 (Tutorial: Mole conversions] This question will walk you through the process of calculating the number of atoms present in a sample of an element with a given mass. Consider a new smoke detector that contains 0.290 µg of americium-241. Step 3: Calculate the answer. The molar mass of americium-241 is 241.1 g/mol. A new smoke detector button contains 0.290 micrograms "Am. How many atoms *"Am is this?

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: (Review Topics] [Refe Use the References to access important values if neede A compound is found to…

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Q: Calculate the number of atoms in a 3.22 x 10³ g sample of strontium. number of atoms: atoms

A: we have to calculate number of atoms of strontium

Q: made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2…

A: Given -> Weight of J2(QZ3)2 = 7.2 gram  Atomic mass of J = 19.00 g/mole Atomic mass of Q = 35.00…

Q: 2. Calculate the following, with proper number of significant figures: Molar mass of AL(PO4) is…

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Q: How many moles of Br are there in a sample of Br that contains 2.33×1023 atoms? _______ moles

A: Since, Number of atoms or molecules is the multiple of moles and avogadro's number. Thus,

Q: Question 31 ✔ Saved A chemical is found to be 80.0 % C and 20.0 % H. If the molar mass of this…

A: Solution- To determine the molecular formula of the compound:we need to first determine its…

Q: What are the molecular and empirical chemical formulas of a compound made up of these molecules? H H…

A: The chemical formula that represents the number of atoms of all the elements present in the molecule…

Q: 1. What is the mass of exactly one mole of HO3Br? Answer to the nearest 0.01 g.   2. What is the…

A: Given, Number of moles of HO3Br = 1 mole      Required,                             1. Mass of…

Q: Consider a sample of carbon tetrafluoride that contains 1.09 × 10²⁴ atoms of fluorine. 1.) Using…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: determine the number of grams of carbon 3.14x 1023 atoms of carbon plz show how u got the answer

A: Given: Number of carbon atoms=3.14 x 1023 atoms Mass of carbon=? 1 mol of carbon atoms = 6.022 x…

Q: 2. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: a. Given that: Mass of sugar = 9.00 g. Molar mass of C12H22O11 = 12×12 + 22×1 + 11×16Molar mass of…

Q: Question 34 of 34 What is the mass in grams of 1.76 x 1025 molecules of N2?

A: Number of molecules of Nitrogen,N2 = 1.76 × 1025molecules Molar mass of Nitrogen = 28.02g/mol

Q: [References] Use the References to access important values if needed for this question. 1. How many…

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Q: Calculate how many liters the following number of atoms would take up. 32) 4.6 x 1035 atoms 46,214…

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Q: How many grams of Co are there in a sample of Co that contains 4.58×1023 atoms? _____grams

A: Number of atoms=.58×1023 atomsFind out mass of Co

Q: 2. a. What is the mass of one mole of caffeine (C8H10N4O2)? Show your work. Box your final answer.…

A: We know, molar mass of : C = 12.01 g/mol , H = 1.007 g/mol , N = 14.007 g/mol , O = 16.00 g/mol  The…

Q: question. 1. How many GRAMS of lead(II) fluoride are present in 4.04 moles of this compound? 2. How…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Q: MISSED THIS? Watch KCV: The Mole Concept. IWE: Converting between Mass and Amount (Number of Moles).…

A: We have given, Mol of Xe= 0.0117mol Mass of Xe=?

Q: One 55 g serving of a cereal provides 267.0 mg of sodium, which is 11.6 % of the recommended daily…

A: Convert 11.6% into 100% using mathematical interpretation & convert mass into moles by using the…

Q: How many ions of S are present in 5 moles of Al2S3? [x 10¹ Sions X Make sure your answer is in…

A: The question is based on mole concept. we have to calculate number of ions present in given quantity…

Q: Chemistry Question

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Q: a) How many moles of methanol are present in the sample? b) Calculate the number of methanol…

A: Since you asked multiple questions, so as per Q&A guidelines of portal i solved first three part…

Q: Determine the number of atoms of O in 7.23 moles of Ca(NO3)2. atoms 3 4 6. 7 9. +/- х 100 2.

A: Given: Moles of Ca(NO3)2 = 7.23 mol

Q: This question will walk you through the process of calculating the number of atoms present in a…

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Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: To solve this problem we have to calculate the number of molecules of the given sample .

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: [Review Topics] Use the References to access important values if needed for this question.…

A: Mass of one mole of a compound = gram molecular weight One mole of a compound = 6.022 x 1023…

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: Experimentally a chemist determined the molecular weight of the compound aniline to be 94.45 a/mol.…

A: A question based on percentage error in the determination of molecular weight, which is to be…

Q: a) What is the mass, in grams, of 5.000 moles of carbon atoms? b)What is the average mass, in…

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

Q: 1. How many ATOMS of sulfur are present in 4.11 grams of sulfur dioxide, SO₂? 2. How many GRAMS of…

A: 1. The mass of sulfur dioxide given is 4.11 g.To find the atoms of sulfur.2. The molecules of sulfur…

Q: Match each of the following with its correct answer The empirical formula of a compound is CH. If…

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Q: 8. How many atoms are in 1.65 moles of titanium? Show all work and give answer a unit. Your answer…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: 2. How much (mass) carbon dioxide will be produced from the combustion of 40 grams of methane?. 3.…

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Q: Fulminating silver is the historic name for compounds that contain silver and which explode…

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Q: In N2O , 28 g N combines with 16  g O. Determine grams of O and N in NO2. Group of answer choices

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Q: How many atoms of Na are in 45.0 g of Na2CO3  ( Na2CO3 = 105.99 g/mol) Your answer should be…

A: In this question, first of all number of moles of Na2CO3 is determined and then with the help of…

Q: Calculate the mass of each sample, express your answer with the appropriate units. 14.7 mol HNO2…

A: 1 mole = 6.022×1023 [Avogadro's number] The mass of one mole of molecules of a substance is known as…

Q: Answer the following questions on Avogadro's Number and the mole. (SHOW WORK step by step and round…

A: Mole concept: According to the mole concept, the number of molecules or atoms present in one mole of…

Q: Determine the number of atoms that would make up a 48.6 g sample of Chlorine. Helpful tip: To enter…

A: 1 mole of any Substance contains Avogadro number of atoms. The value of Avogadro number = 6.022×1023…

Q: A Question 5 Retake question You determine the empirical formula of a compound to be CH3. In a…

A: Empirical formula = XY  Molecular formula = (XY)n  n= Molecular mass/Empirical mass  A balanced…

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.