Answer each of the following questions. Note that none of them should require difficult calculations. a. How many molecules are present in 1 mole of pentane ( C5H12)? molecules b. How many moles of fluorine atoms are present in 8 moles of C2F6? moles c. What is the approximate mass (to the nearest gram) of 3 x 1023 helium atoms?

Q: How many oxygen atoms are in one mole of Sn(SO4)2- 4.818 x 1024 02 04 08 O 6.022 x 1023

A:

Q: 6. Vanillin contains carbon, hydrogen and oxygen. Combustion of 30.4 mg of vanillin yielded 70.4 mg…

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Q: How many moles of N₂H4 are in 3.94 x 1022 molecules?

A: N2H4 is called as hydrazine. It is a hydride of group-15 elements.

Q: What is the molar mass of the following compounds.            a. Epsom Salt, the chemical formula…

A: (a) Molar mass of Epsom salt ( MgSO4 . 7H2O ) = (24 x 1) + (32 x 1) + (16 x 4 ) + (18 x 7)…

Q: Calculate the number of atoms in a 3.36 x 10³ g sample of boron. Macmillan Learning number of atoms:

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

Q: A sample of NH3 contains 5.48×1022 molecules. How many moles of NH3 are in this sample?  mol How…

A: Step 1: Calculation for the number of moles of NH3: 1 mole of any substance contains Avogadro's…

Q: 1) How many sodium atoms are there in 0.3 moles of Na atoms? 2) A sample of carbon dioxide is made…

A: 1) given, Number of moles of Na atoms = 0.3 moles Number of sodium atoms = ?

Q: 1. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We can calculate the moles of any substance from the following formula : Moles of substance = mass…

Q: How many moles of silver atoms are there in 1.80 x 104 atoms of silver? O 3.30 x 103 moles O 3.00 x…

A: The given data contains, number of atoms = 1.80×1020.

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A:

Q: Without doing any calculations, determine which element in each of the compounds will have the…

A: The mass percent is the ratio of mass of a component to the total mass of the compound, which is…

Q: 7. Determine the empirical formula of a compound whose composition is 50.1% S and 49.9% O.

A: Convert the mass percent to grams : Thus 100 g sample of above compound contain 50.1 g Sulphur(S)…

Q: Use the References to access important values it needed for a. How many ATOMS of carbon are present…

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

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: How many moles of tin, Sn are needed to give 1.39x1022 tin atoms? Starting Unit (include substance):…

A:

Q: Calculate the moles of glucose in 1.0253 g of glucose, C6H12O6. Then calculate the moles of each…

A: Given :-  Mass of glucose = 1.0253 g  To calculate :-  Number of moles of glucose and also determine…

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: We have two 22.4 liter flasks, one containing H2 gas and one containing CO2 gas. The gases are at…

A: At STP (standard temperature and pressure), 1 mole of gas occupies 22.4 L of volume.

Q: One carrot may contain 0.75 mg of vitamin A (C20H30O). How many moles of vitamin A is this?  How…

A: We would use relation between mass ,moles , molar mass to calculate the values.

Q: Florasulam is an herbicide with the chemical formula C12H8F3N5O3S. Answer the questions below…

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Q: A sample of ethanol (C2H6O) contain 3.024 g of hydrogen. How many moles of carbon in the sample?…

A:

Q: 7. Calculate the number of Al atoms in 50.0 g of Al(BrO3)3.

A: The number of atoms of aluminium in Al(BrO3)3 is calculated as,

Q: The formula for sulfur tetrafluoride is SF4. a. How many grams of sulfur are present in 3.28 moles…

A: (a)Moles of sulfur tetrafluoride =3.28 moles and(b)Mass of sulfur tetrafluoride =4.73 gramWe need to…

Q: How many moles of NO2 in 92.0 g of NO2? Molar mass of (N) = 14.0 g/mol; Molar mass of (O) = 16.0…

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Q: What mass of compound is present in 7.60 moles of each of the following compounds? a.) Ca3(PO4)2 b.)…

A: In chemistry, number of moles refers to a unit of amount. It can also be defined as the mass of a…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022…

A:

Q: 4. YOU HAVE 15 GRAMS OF NazSO4. CALCULATE THE NUMBER OF CATIONS IN THIS MASS. GIVEN: MOLAR MASS (…

A: Given compound Na2SO4 and this compound dissociates into cation and anion as  Na2SO4 ⇌2Na+ + SO4-2…

Q: a. You have 1.893x10²º molecules of chromium (III) phosphate. i There are ii. There are ii. There…

A: Given: Molecules of chromium (III) phosphate = 1.893×1029 molecules Known: Molar mass of CrPO4 =…

Q: a. How many molecules of carbon dioxide are present in 4.99 moles of this compound? molecules 22 b.…

A: 1 mol = 6.022 x 1023 moleculesThus,1 molecule =  mol

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: How many moles of atoms are in 5.00 g of ¹3C?

A: Mole can be define as the ratio of weight of substance taken divided by molecular weight of that…

Q: 7. The mass of 2.27 x 10-2 mol of a molecule is 1.0g. Identify the molecule. OC₂H6 Onone of these…

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Q: y MOLECULES of molocules

A:

Q: 1. How many MOLECULES of sulfur tetrafluoride are present in 1.48 grams of this compound? molecules.

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

Q: 7.) Which of the following is NOT TRUE about the compound C6H1206? a. 1 mole of C6H12O6 is equal to…

A: As per bartleyby guidelines i answered only first question so please don't. Thank you

Q: The number of atoms of oxygen in a 0.01800-g sample of O3(g) is equal to the number of molecules in…

A: Given in the question : Mass of O3 = 0.018 g Mass of other hydrocarbon sample CxH6 = 0.06085 g Given…

Q: How many moles of sulfur trioxide are present in 1.02 x 1022 molecules of this compound?  moles…

A:

Q: How many moles of HCl are in 30.6 g HCl? Express your answer in millimoles. (atomic weights: H=1.01;…

A: • Thus, 839 millimoles of HCl are in 30.6 g HCl in correct number of significant figures.

Q: Consider the following made-up compound: D₂Z4 Determine the number of moles of D₂Z4 in 4.5 x 1023…

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Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

A: Dear student since it is a multiple type question, according to guidelines here I am solving only…

Q: Determine the number of hydrogen atoms in one mole of H₂O2. 3.01 x 1023 2.408 x 1024 5.2 x 1022 6.02…

A: An atom is a particle that contains protons and neutrons and is surrounded by electrons.

Q: 5.* Determine the empirical formula and the molecular formula of a compound (Freon 11) that consists…

A:

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.