8. Calculate the number of moles in a sample containing 1.85 x 1034 molecules of water.

Q: Calculate the mass of 2.5 moles of ammonia.

A:

Q: An average sample of coal contains 3.0% sulfur by mass. Calculate the moles of sulfur present in…

A: Given : Mass of coal = 2.4 X 103 Kg  And mass % of sulfur = 3.0 % Since 1 Kg = 1000 g Hence mass of…

Q: Question attached

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

Q: determine the number of moles in 4.21x10*23 molecules of CaCl2

A: Given: The number of molecules of CaCl2 is 4.21x×1023.

Q: 1. identify 4 different chemical compounds. A.) calculate the mole mass of each chemical compound.…

A:

Q: How many moles of titanium are contained in 71.4 g?

A:

Q: Calculate the number of molecules present in 0.5 moles of CO2?

A: Given, 0.5 moles of CO2

Q: Calculate how many grams of chlorine gas are in 8.031 x 1023 atoms of chlorine gas.

A: Given: Atoms of chlorine gas is 8.031×1023 Mass of one mole of chlorine gas is 70.9 g

Q: Calculate the number of moles of He atoms present in 5.55 g of He.

A: Given that, mass of He= 5.55 g molar mass of He= 4 g mol-1 then,

Q: How many moles are in 4.8 x10 24 molecules of Na „0?

A: Answer :-  Number of moles of Na2O = 8

Q: Determine the number of molecules in 41.3 grams of NH₃.

A:

Q: Determine the number of atoms of O in 10.0g ofCO2.

A:

Q: Calculate the number of (a) nitrogen molecules (N2 molecules) and (b) nitrogen atoms (N atoms) in…

A: From given data  Mass of N2= 0.111g  Also molar mass of N2= 28 molar mass of N = 14  Formula used…

Q: How many moles of pentane are needed to produce 2.30 x 1023 molecules of carbon dioxide gas?

A: 1st we have to calculate the number of Moles of CO2 from the number of Molecules of CO2. We know , 1…

Q: How many moles are in 3.41 x 1024 molecules of CaCO3?

A: A mole contains 6.022×1023 atoms or molecules or particles. This number, 6.022×1023 is called the…

Q: 1. 84 g of CsH&O6 contains 6.02 x 1023 molecules.

A: Molar mass of C5H8O6 = 5×12 + 8×1+ 6 × 16 = 164 g 1 mol of any substance contains= 6.022×1023…

Q: How many grams of chlorine are present in 45.0 g of CCl4?

A: Answer:- This question is answered by using the simple concept of calculation of mass of any element…

Q: If we want to make 2.5 moles of NH3, how many grams of nitrogen will we need?

A: The balanced chemical equation for the reaction that produces ammonia (NH3) from nitrogen (N2) and…

Q: Calculate the number of moles equivalent to 5.4 x 10 atoms of helium.

A: According to Avogadro law  1 mole = 6.022* 1023 atoms

Q: Calculate the number of nitrogen atoms in a 150.0 g sample of dinitrogen tetroxide

A:

Q: Calculate the number of moles of helium that contains 2.79×1021 atoms.

A: Given,Number of helium atoms = 2.79 × 1021

Q: Calculate the number of Na atoms in 2.56 g of NaNO3 (Avogadro’s number NA = 6.022 x 1023))

A:

Q: 8.95 x 1025 molecules of CCl4 to mol of CC14

A: Given that: Molecules of CCl4 = 8.95×1025 Mol of CCl4 =?

Q: 250(g) + 02 (g) + HCI (g) NH3(g) MgCO3 250 (g) NH,CI (s) + CO2(g) Mgo (s) +

A: Entropy denotes by a symbol 's' . Entropy of a universe increasses spontaneously.   Second law of…

Q: Calculate the mass (in g) of sample. 9.85x1019 CCl2F2 molecules

A: The mass (in g) of sample 9.85x1019 CCl2F2 molecules can be calculated as

Q: How many total atoms are in a 75 g sample of Ag2O?

A:

Q: How many grams of water could be made from 5.19 mol H2 and 3.86 mol O2?

A: Since you have posted more than one question,we can solve only first question for you. If you want…

Q: 6. How many moles are in 4.1 x10 22 molecules of NaCI?

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

Q: Determine the quantity of moles of hydrogen in 3.06 x 10-3g of glycine , C2HSNO.?

A: Please find your solution below : Mole is a measure of amount of any substance.  It is defined as…

Q: How many moles of nitrogen (N2) would it take to make 8 moles of ammonia (NH3)

A: Nitrogen gas reacts with hydrogen gas to form ammonia. Write the complete reaction. N2g+3H2→2NH3

Q: Calculate the number of moles of potassium ions in a 25.0 g sample of potassium oxide

A: Here, we have to calculate the number of moles of potassium ions in a 25.0 g sample of potassium…

Q: 1) How many moles of cobalt (Co) atoms are there in 6.00 X 10 (6 billion) Co atoms? 2) How

A: We know, 1 mols = 6.022x1023 atoms

Q: F. Determine the number of moles in 3.82 X 10 molecules of water.

A:

Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.56 mL of water at…

A: The density of a substance is the mass of the substance upon volume. The number of molecules is the…

Q: Please express and answer the following ASAP General CHEMISTRY 1. Determine the percentage by mass…

A:

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…

Q: How many moles of CCL4 are present in 7.65 X 1045 molecules of the compound? W mass of this amount…

A: Given: The number of molecules of CCl4 is 7.65×1045. The number of moles and mass of CCl4 is to be…

Q: Calculate the mass (in g) of each sample.a. 4.5 * 1025 O3 moleculesb. 9.85 * 1019 CCl2F2 moleculesc.…

A:

Q: Calculate the number of moles of He atoms present in 6.33 g of He.

A: Weight of He = 6.33 gm

Q: How many moles are present in a (3.3x10^0) mg sample of calcium?

A:

Q: 1. identify 4 different chemical compounds . A.) calculate the mole mass of each chemical compound…

A:

Q: what mass of lead is contained in 56.6g of lead(IV) fluoride?

A:

Q: Determine the quantity of moles in 1.20 x 1024 molecules of H₂O

A: Conversion of molecules to the number of moles ?

Q: Calculate the number of (a) nitrogen molecules (N 2 molecules) and (b) nitrogen atoms (N atoms) in…

A: Use formulas Mole=mass÷molar mass Total molecule=mole×6×1022 Total Atoms=atomicity×molecule…

Q: Calculate the number of molecules present in a 1.32 g sample of Calcium Hydroxide.

A: For Calcium Hydroxide :  Given mass = 1.32 g Molar mass = 74.093 g mol-1

Q: Calculate the number of (a) nitrogen molecules (N2 molecules) and (b) nitrogen atoms (N atoms) in…

A: Given the mass of nitrogen gas = 0.111g We know that molecular mass of N2 gas= 28g So calculating…

Q: Determine the maximum mass of lithium nitride that could be formed from a reaction involving 5.00 g…

A: Lithium ⇒LiNitrogen ⇒N2Lithium Nitride ⇒Li3N

Q: What mass of ethanol and water would you need to make an 80.0 g mixture containing equal number of…

A:

Q: What is the mass of 3.5 x 1023 molecules of CO2, 44.01 g/mole? 26 g 0 75 g 0.58 g 0 1.7 g

A: using the number of molecules, we have to calculate the mass of CO2

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.