Which of the following can be used mole as a unit to count paticles/atoms? A. Pharmaceutical scientists count C27H35N6O8P particles in a Remdesivir drug to treat the severity of the CoVid 19 patients.

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

A:

Q: Determine the number of moles of nitrogen atoms in 2.15 mol N2O.

A: Given, Number of moles of N2O = 2.15 moles we have to determine number of moles of nitrogen atoms in…

Q: (a) The characteristic odor of pineapple is due to ethyl butyrate,a compound containing carbon,…

A:

Q: Consider titanium.It is a metal with the same strength as steel but is 45% lighter.It is also…

A: Given data: The mass of titanium metal = 1 nanogram. To find: The number of atoms of titanium.

Q: Which does NOT describe a mole?A. a unit used to count particles directlyB. Avogadro’s number of…

A: Mole is an SI unit used to measure the amount of the substances present. One mole of the substance…

Q: 2) a. Calcula te the molar mass of water. b. find out the number of moles of water in of water. 20g…

A: We have 20 g of water, the molar mass of water, moles of water in 20g ,  the number of water…

Q: A chromium containing compound has a formula FexCryO4 and is 28.59% oxygen by mass  Find x and y

A: Given, mass percentage of O in FexCryO4 = 28.59%Molar mass of 4 O in FexCryO4 = 4 × 16 g/mol = 64…

Q: WE GE T THERE? many moles of electrons are required mol e-

A: As we know,   Charge of 1 mol electrons = 96500 C Mol of Ni = 8.3×10-2 mol Balanced chemical…

Q: Calculations Using the Mole Learning Goal: 2.32x1023 13C atoms To learn how to convert grams to…

A:

Q: Which sample contains the greatest number of atoms. A sample of N that contains 2.53×10 atoms or a…

A: Given,

Q: Aluminum has the density of 2.70g/cm3 . How many moles are in a 13.2cm3 block of the metal…

A: At the standard temperature and pressure conditions, density of a substance is given by:

Q: The Avogadro constant is defined as: A The number of atoms in exactly 1gof carbon-12 B The number of…

A: The Avogadro constant (NA) is the proportionality factor that relates the number of constituent…

Q: Number of atoms of C in 17 moles of C4H10 are: O 24.09x10^23 7.06x10^23 O 409.50x10^23 102.37x10^23

A: Number of atoms of carbon  = carbon atoms × moles × NA

Q: Q9) How many moles of Cl atoms are in 65.2g of CHCI3 ? a) 15 b)35 c) 30 d) 3.5

A: Provided amount of CHCl3=65.2g Molar mass of CHCl3=119.38g

Q: Find y n-Al= %3D use the follamng equation: ng mass of Sample = (n-H,-L5y )(65.4) + 27.0y m2య లఆ…

A: Given: Mass of sample = 0.090 g. And n-H2 = 2.720 × 10-2 moles.

Q: How many molecules of sugar would be contained in a teaspoon of sugar if it's mass is 8.5g. 11.

A:

Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: 5. How many moles are in 6.24 × 102! molecules of CaSO,?

A: Mole concept : The mole is use to measure the amount of any atom or molecules like other unit. For…

Q: O A. 9.3 moles O B. 42 moles OC. 56 moles O D. none of these O E. 14 moles OF. 19 moles O G. 84…

A: From balanced reaction , 1 mol Co3(PO4)2 required = 2 mol Na3PO4  14 moles Co3(PO4)2 required = 2 ×…

Q: A typical "lcad" pencil is actually made from carbon. If the carbon in the pencil weighs 1.50 gram…

A: Number of moles of a chemical compound is used to measure the amount of compound in the given…

Q: AtomIs Molar mass Molels Element loaal 23 12.04X 10 29 c3546 63.5462 copper Gold 393.942 Ag Au…

A: From molar mass we can calculate the no of atom present in the molecules .

Q: Explain this

A: 1 mole of any substance contains Avogardo number (6.022 x 1023) of particles.The particles may be…

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

A: We have given that  A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g  calculate the moles and…

Q: Which statement BEST describes why we use moles when measuring quantities of atoms and molecules? O…

A: The mole is the unit of measurement for amount of substance in the International System of Units. It…

Q: Fluorite, a mineral of calcium, is a compound of the metalwith fluorine. Analysis shows that a…

A:

Q: One mole of sulfur approximately has a) 6.02214 * 10^23 b) 6.02222 * 10^23

A: In chemistry, mole concept is very important for various calculations , understanding and quantify…

Q: Oxygen makes up 46.7% by mass of the earth's crust. How any grams of oxygen are present if a sample…

A:

Q: minutes

A:

Q: Dimercaprol (HSCH₂CHSHCH₂OH) was developed duringWorld War I as an antidote to arsenic-based poison…

A: Dimercaprol has a molecular formula of C3H8OS2 and molar mass of 124.227 g/mol. To determine:…

Q: 1. Define Avogadro's number? explain w/ applications 2. What is a mole? 3. How are Avogadro's…

A:

Q: Determine DS for this process, with 2.78 moles of gas at constant temperature:

A: Here, expansion of Helium gas is taking place at constant temperature. Hence, it is an isothermal…

Q: a. How many moles of tetraphosphorus decaoxide are present in 6.31 x 10" molecules of this compound?…

A:

Q: 26. a. A mole of bromine atoms contains atoms b. A mole of bromine molecules contains c. A mole of…

A:

Q: 7. A metal (M) forms a compound with the formula Mle. The compound contains 71.00% I by mass. Ident…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: Hi. I am trying to calculate the percent of water in an uknown hydrate. The given data is: mass of…

A: Law of conservation of Mass :- Law of conservation of mass states that mass can neither be created,…

Q: college.com/course.html?courseld=15539865&Heplb=67br| Sugar O Shop | Origami Owl Wholesale Glass...…

A: The number of moles of any substance is equal to the Avogadro number which means that 1 mole of…

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

A: Molecular weight of copper is 63.55

Q: Benzene has the molecular formula CcH. A sample of benzene has a mass of 43.95 g. (a) Calculate the…

A:

Q: An aspirin tablet contains 0.325g of C9H8O4. A) How many molecules of C9H8O4 does it contain? B)…

A: Given: Mass of C9H8O4 = 0.325 g.

Q: of 7.5 x 10^23 atoms of Br? * A. 7,5x1batoms br x G02 MỖ atons Br Imol Br B. 7.5x1b tome br x_ Imol…

A:

Q: b) Whal IS To 6,02 x 100 3 sodium used in cooking and at the table. The sodium content of a popular…

A: Given, Daily requirement of sodium intake should be less than 0.10 mg. Sodium content of hamburger =…

Q: The following figure represents a molecule of Saccharin, which is commonly used as an artificia…

A: Number of moles of the given substance is the ratio of mass of the substance to the molar mass of…

Q: a. How many moles are in 8.5x1022 atoms Xe? b. How many moles are in 7.4×10 atoms Cu? c. How many…

A:

Q: 1.The compuond cisplatin Pt(NH3)2Cl2 is an antitumor. a)Calculate the elemental percent composition…

A: In problem a) we will find out the mass percentage of elements present in cisplatin and in b) we…

Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A:

Q: A sample of a compund made entirely from copper and oxygen was founf to have a total mass of…

A: Given,Total mass of sample = 0.1431gMass of copper = 0.1271gThe mass of oxygen is determined as,

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.