1. How many moles of Sc are there in a sample that contains 14.6 grams of scandium? moles 2. How many grams of scandium are there in a sample that contains 1.69 mol of Sc? grams

Q: Mass of product…

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Q: a) A sample of a compound containing only carbon and oxygen decompose s and produces 24.50g of…

A: The formula in which the elements are in the simplest whole number molar ratio is termed as…

Q: mass

A: moles of Compound = ( mass of Compound / molar mass of Compound )  Mass of the Compound = moles of…

Q: How many moles of oxygen are in 9.65 moles of sodium hydroxide?

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: how many moles of zinc are present in a 79.5 gram sample of naval brass?

A: Naval Brass is a 60:40 copper zinc alloy to which about 1% of tin has been added to improve the…

Q: A pure silver ring contains 4.55×1022 silver atoms. How many moles of silver atoms does it contain

A: A mole of a substance is equal to as many entities (atoms , molecules and ion ) as there are number…

Q: How many moles of Ba are there in a sample of Ba that contains 2.20×1024 atoms? moles

A: Answer:- this question is answered by using the simple concept of calculation of number of moles…

Q: How many moles are in 11.9 grams of argon (Ar)?

A:

Q: The mass in grams of one argon atom

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Q: Determine the mass, in grams, of 0.290 moles of I (1 mol of I has a mass of 126.90 g).

A:

Q: In an experiment, a specific amount of KClO3 is allowed to decompose to produce 4.40 g of KCl. How…

A: Given Mass of KCl produced = 4.40 g To find Mass of O2 produced in the experiment.

Q: A gallon of water has a mass of 3.79 kg. How many moles of water (18.02 g/mol) is this?

A: Given : Mass of water = 3.79 Kg  And molar mass of water = 18.02 g/mol

Q: Determine the mass, in grams, of 0.465 moles of S (1 mol of S has a mass of 32.07 g).

A: Given that, Moles of S= 0.465 moles MM of S= 32.07 g mol-1 then,

Q: How many atoms are there in 2 moles of Calcium

A: Number of moles of calcium = 2 moles  Number of atoms of calcium = ?

Q: How many moles of Sn are there in a sample of Sn that contains 2.38x10^24 atoms

A: Number of moles = Given no. of atoms/NA NA = Avogadro's number = 6.022 x 1023 Number of Sn atoms  =…

Q: How many atoms of He are in 2.59 moles of He? In scientific notation

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

Q: Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of…

A: a.

Q: Determine the mass, in grams, of 0.710 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: alculate reduced molar mass (in g/mol] for two particles with masses 30.4 g/mol and 57.7 g/mol. Note…

A: Given mass of particle 1(m1) = 30.4 g/ mol Mass of particle 2(m2) = 57.7 g/ mol Reduced mass =?…

Q: what is the mass of 0.35 mol of K2S ?

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Q: Which sample will have the greatest mass? A. 2 mol of SO2 B. 1 mol of SO2 C. 1 mol of SO3 D. 2…

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Q: How many moles of oxygen are contained in 1.33 moles of CaCO3?

A: A question about number of moles of CaCO3, which is to be accomplished.

Q: For the making of water oxygen and hydrogen are needed. If you had 10 grams of hydrogen gas. How…

A:

Q: 2) How is the mole similar to a dozen?

A: (2) Answer- A mole is a unit of counting particles such as atoms, molecules, ions etc. which…

Q: Determine the mass, in grams, of 0.580 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A:

Q: 2 moles of N2, 14 moles of He and 28 moles of H2 will have O the same weight O the same number of…

A: The number of moles is the amount of substance in the units of mol. 1 mol has 6.022 x 1023…

Q: The molar mass unit is gram per mole

A: Molar mass: It the mass of chemical substance that is present in one mole amount of substance.

Q: How many moles of calcium atoms do you have if you have 5.65 × 10²¹ atoms of calcium. (The mass of…

A: Mol defination:  Mole in terms of particles:  1 mol = Avogadro no.of particles            = 6.02 ×…

Q: What is the molar mass of the molecule OF? A. 19 g/mol OF B. 35 g/mol OF C. 46 g/mol OF D. 54 g/mol…

A:

Q: How many moles of magnesium are present in 3.01 grams of magnesium?

A: Magnesium is an which is having atomic No. 12. It is an important mineral. It has role in enzyme…

Q: 1. How many moles of Au are in 212 g of Au?

A: 1 mole = atomic mass grams. Here atomic mass of Au = 199.96. 199.96 grams of Au = 1 mole 212 grams…

Q: A. Calculate the number of moles for B. Calculate the mass of the each given. 1.) 45g of table sugar…

A: Given: Mass of sugar = 45 g Moles of nitrogen gas = 2.7 moles Standard data: The molar mass of…

Q: How many atoms are in 5.80 moles of He? 4.00 1.03 ×× 1023 6.02 ×× 1023 3.49 ×× 1024 none of the…

A: Given information: Moles of helium atom = 5.80 mol

Q: 9. How many moles of phosphorus are in 16.2 moles of aluminum phosphate?

A: Given,

Q: Molybdenum has a molar mass of 95.94 g/mol. How many moles are in 150.0g Molybdenum? *

A: Since we know thta number of mole of any substance is calculated by dividing the mass of substance…

Q: How many grams of Cl are there in a sample of Cl that contains the same number of moles as a 108…

A: Molar mass of Sulfur = 32.065 g/mole Molar mass of Cl = 35.45 g/mole

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: Determine the mass, in grams, of 0.675 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: Determine the mass, in grams, of 0.750 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: A platinum block is made with 0.017 mole of the metal. How many platinum atoms are there In the…

A: Given that the number of moles of platinum is 0.017 mol. Number of atoms of platinum can be…

Q: A soda can contains about 14 grams of aluminum (Al), the most abundant element in Earth's crust. How…

A: A soda can contains about 14 grams of aluminum. Given Moles of aluminium is 52 moles

Q: How many moles of H,O would be needed to make 2.5 moles of O,? * 2 H,0 – 2H, + 1 O, O 2.0 moles O…

A: The balanced reaction given is, => 2 H2O -----> 2 H2 + 1 O2  Given : Moles of O2 produced =…

Q: How many atoms of Cu are in 5.78 moles of Cu?

A: 1 mol of a substance contains 6.022 × 1023 atoms

Q: How many grams of W are in 0.367 mol W?

A: Given :- number of moles of W = 0.367 mol  To calculate :- mass of W in grams

Q: How many moles of Co are there in a sample of Co that contains 9.51×10 atoms? moles

A: Given: Number of atoms of Co = 9.51*1023 atoms

Q: How many Ba atoms are there in 3.39 moles of Ba? atoms

A: The given data is as follows: The moles of Ba = 3.39 moles The number of Ba atoms = ?

Q: How many atoms is 48.62 moles of zinc

A: Solution:-   The values provided in the question are:-   i) Number of moles of zinc = 48.62 mol…

Q: What is the mass of 2.561 mol of gold?

A: A pinch of salt contains as many particle of NaCl that cannot be counted as such. The unit Mole (…

Q: 5. A 25.5L balloon holding 3.5 moles of carbon dioxide leaks. If we are able to determine that 1.9L…

A: The initial volume of the balloon is = 25.5 L The initial moles of carbon dioxide in the balloon is…

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.