How many ATOMS of boron are present in 2.66 moles of boron tribromide ? ______atoms of boron. 2. How many MOLES of bromine are present in 7.65×1022 molecules of boron tribromide ? _______moles of bromine.

Q: Calculate the number of C atoms in 0.872 mol of C? Calculate the number of SO2 molecules in 8.44…

A: The answers to the first three questions are given as:

Q: 1. How many MOLECULES of carbon tetrachloride are present in 2.56 moles of this compound ?…

A: 1 mole of any compound contains 6.022 x 1023 molecules. we will use this information to solve these.…

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: A model of the butanal molecule is shown in the window below. ball & stick + labels ited a. How many…

A: From the model, Butanal=> CH3>CH2CH2CHOMolecular formula of butanal is C4H8O. Mole is the SI…

Q: a. How many grams of iron(III) nitrite, Fe(NO2)3, are present in 1.82 moles of this compound? grams…

A:

Q: How many atoms are contained in 0.98 moles of iron (Fe)?

A:

Q: For every mole of NaHCO3 reacted , one mole of CO2 is produced. The mole ratio for those two…

A: Given that 1 mole of NaHCO3 produce 1 mole of CO2.  We are asked to convert the mass of CO2 to…

Q: Calculate the molar mass. a. Co(NO3)2 x 6H2O b. Ni(NO3)2 x 6H2O

A:

Q: a. How many grams of B are present in 1.65 grams of boron trichloride? Mass= gB b. How many grams of…

A: A mole is a basic unit of an element.A mole is a collection of Avogadro number of particles i.e.A…

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

A:

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: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

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Q: . A 67.0 g sample of a compound was found to contain 40.2 g of carbon, 3.00 g of hydrogen and 23.8 g…

A:

Q: a. Determine the molar mass of potassium phosphate and ammonium phosphate. K3PO4 (NH4);PO4 b.…

A: The objective of the question is to determine the molar mass and mass percentage of phosphorus.

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A:

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: g. If the chemical reaction produces 2.19 x 102 grams of AlCl3, then how many moles of MgCl2 were…

A: Since, you have asked multiple questions, so I will solved first question for you step by step in…

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

A:

Q: a. How many molecules are present in n g of Sulphur dioxide?

A: Molecular weight of SO2 = 64 g/mol Molecular weight of any substance contains 6.023*1023 number of…

Q: What is the molar mass of the following compounds?     N2H4                                     b.…

A: The molar mass of a substance can be defined as the mass of that substance present in one mole. It…

Q: 2. Calculate the number of molecules of water in a 500.0-mL glass of water. (Note: assume density of…

A: • As per bartleby guidelines, I need to solve only first question in case of multiple questions…

Q: Consider the following reaction of K2S2O3 for neutralizing chlorine in industrial bleaching. K2S2O3…

A:

Q: 8.How many carbon atoms in 70 molecules of carbonic acid, H2CO3 are. A) 100 B) 4.8x1025 C) 70 D)…

A: Carbonic acid  have formula  H2CO3. Given Number of molecule of carbonic acid =70 Number of atom of…

Q: If we wanted to produce 0.95 mol of carbon dioxide gas (CO2), how many moles of oxygen (O2) gas…

A: Given, moles of CO2(produced)=0.95 mol

Q: 8. Which of the following has a greater mass? A. 2.0 atoms of lead B. 5.1 x 1023 mole lithium Write…

A:

Q: 1. How many MOLECULES of dinitrogen monoxide are present in 2.14 moles of this compound? 1.29x10^24…

A: moles of dinitrogen monoxide(N2O) = 2.14 molesnumber of molecules of dinitrogen monoxide(N2O)…

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

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

Q: What is the molar mass of  sulfuric acid, H2SO4 You may assume H has a molar mass of 1 g/mol, S has…

A: For question 1, we have to find the molar mass of H2SO4. For question 2, we have to find the mass of…

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: Number of atoms of Carbon in 10 moles of CAH10 are:

A: Given : moles = 10 mol

Q: What is the molar mass of the following compounds?     N2H4…

A: Molar mass of compounds depand molar mass of atom

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: 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. 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: 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: how many atoms of nitrogen are in 1.34 moles of nitrogen  2. how many of copper 2 are in 2.62 moles…

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

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: Number of atoms of Carbon in 15 moles of C4H10 are: 90.33x10^23 361.32x10^23 O 6.23x10^23

A:

Q: Without using a calculator, which has the greater mass: One mole of carbon atoms or one mole of…

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Q: 24. Calculate the following: a. The number of moles of oxygen atoms in 4.35 × 1026 molecules of CO2…

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Q: Question 11 How many moles of carbon are present in 1.37 x 10 25 atoms of carbon? O 8.25 moles O…

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Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: A particular oral contraceptive contains 0.0391 mg ethynyl estradiol in each pill. The formula of…

A:

Q: 19 Convert 7.16E24 atoms of Ni to grams of Fe. 2 Ni+3 Fe(NO3)2 → 2 Ni(NO3)3 +3 Fe type your…

A:

Q: 1.Determine the number of atoms of O in 22.3 moles of Al₂(CO₃)₃  O in 52.3 moles of Fe₂(ClO₂)₃.

A: 1) The compound given is Al2(CO3)3. Moles of Al2(CO3)3 = 22.3

Q: In chemistry, what is meant by the term “mole?” What is the importance of the mole concept

A: Mole is a unit to  express the mass, Number and volume of a Substance in Chemistry.  It is a bigger…

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.