What is the mass ratio of Na to S in Sodium Sulfide?

Q: What is the mass percent of iron in iron(II) phosphide

A: Fe2P Molar mass of Fe2P=142.66gm/mole Atomic mass of Fe = 55.85gm/mole

Q: Carbon tetrachloride has a chlorine-to-carbon mass ratio of 11.8:1 If a sample of carbon…

A: CCl4 is carbon tetrachloride. Mass ratio of Cl:C is 11.8:1  It means 11.8 g Cl per 1 g C

Q: Determine the mass percentage of hydrogen in CH4  and ‍C2H6.

A:

Q: How many atoms of Cu are existing in 2.36 g of copper wire?

A: Since molar mass of Cu = 63.546 g/mol Mass of Cu = 2.36 g (given)

Q: A metal (M) forms an oxide with the formula MO. If the oxide contains 39.70 % O by mass, what is the…

A: Molar mass of an element is its characteristic property .So to identify the metal, first its molar…

Q: Would it be possible to determine the percentage of oxygen in NaCIO3?

A: The given compound is = NaCIO3 The percent of oxygen in this compound is =?

Q: If 44.0 g of molten iron(III) oxide reacts with 35.0 g of aluminum, what is the mass of iron…

A: Iron(III) oxide reacts with aluminium to form iron and aluminium(III) oxide. The equation for the…

Q: What is the mass percent of bromine in lithium bromide?? 1.47.6% 2.52.4% 3.92.01% 4.7.99%…

A: Answer: option 3) 92.01 % is the mass percent of bromine in lithium bromide.

Q: What is the mass percentage of phosphorus in a sample of 8.53 phosphorus oxychloride containing a…

A: Mass percentage of phosphorus = 20.16 %

Q: Calculate the mass, in grams, of 992 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A:

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: What is the empirical formula of a compound with the following mass percentages of carbon, hydrogen…

A:

Q: How many vanadium atoms are contained in 158 kg of vanadium?

A: 1 mole of substance contains 6.022 x 1023 atom.

Q: What is the mass percentage of O in C,H,O,? 42.051 % C 8. 9. +/- x 100 3. 2. 4. 7,

A: Given: C3H8O2

Q: Without doing any calculations, determine which of the samples contains the greatest amount of the…

A:

Q: Calculate the number of atoms present in a sample of 1.50 grams of silver (Ag).

A: Find the mole of silver that present in 1.50 grams of silver sample,

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

A:

Q: What is the mass percentage of Al in a piece of metal with 90.6 g of Al in a 162 g sample?

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Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: For a compound consisting of two components A and B, mass% of A abd B are related to each other as…

Q: What volume of 5.0M NaCl is needed to provide10.0 grams NaCl?  Atomic weights: Na = 22.99  Cl =…

A: Molarity (M) : Number of moles of solute present in 1 litre solution is called molarity (M)…

Q: Calculate the percentege mass in KMnO4. [Relative Atomic masses of: K= 39, Mn= 55 and O= 16]

A: Consider the given relative mass of the atoms present in KMnO4 is as follows; K = 39, Mn = 55 and O…

Q: Determine the mass (in grams) of aluminum present in 1.08 grams of Al2S3?

A: Molar mass of the elements is equal to the sum of the atomic masses of all the elements. Molar mass…

Q: How many gold (Au) atoms are there in a 10. g sample of that is 50% Au by mass?  a. 6.2 x 1022 b.…

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Q: What is the mass percent (mass %) of Cr in the same unknown salt? O 20.6 % 32.9 % O 8.78 % 13.5 % O…

A: The gram equivalents can be calculated easily if the normality and volume are given because the…

Q: How could you prepare 0.5L of 0.1 N Na,COP Knowing that. atomic masses of Na = 23, 0= 16 and C = 12

A: Recall the following expression of Normality      NormalityN=wE×VHere,equivalent weight of…

Q: What is the mass percent of oxygen in water: 33.3% 5.60% 88.8% O 11.2%

A:

Q: If carbon has a molar mass of 12g and oxygen has a molar mass of 16g. What is the molecular mass of…

A: Consider the given information is as follows: Molar mass of carbon = 12 g Molar mass of oxygen = 16…

Q: Calculate the mass, in grams, of 602 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A: Given information: 602 atoms

Q: Find the molar mass of the following chemicals: Sodium (Na) Calcium (Ca) Xenon (Xe) Gadolinium (Gd)…

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Q: 17. A 5.0 g sample of calcium nitrate (Ca(NO3)2, M=164) contaminated with silica (SiO2, M=60.1) is…

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Q: How many grams of oxygen are in 48 grams of sodium bicarbonate, NaHCO3?

A: 1 mole = 6.022×1023 (Avogadro's number) The mass of 1 mole of atoms is called atomic mass For…

Q: How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; Si=28.09)…

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Q: What mass of oxygen would be required to convert 4.00 g of sulfur into sulfur trioxide (SO3)?

A: Given, amount of sulfur =4.00 gramwe are asked to calculate the mass of oxygen would be required…

Q: What is the mass, in grams, of each elemental sample? 0.0355 mol Ba

A:

Q: 70 ml of 0.3 normali (sulfuric acid) was taken to prepare 60 ml of sulfuric acid solution. What is…

A: Introduction: For the preparation of dilute solution from a stock solution, we can use the following…

Q: Which element comprising Mg(OH)2 has the highest percentage by mass? RSK. Oxygen KRS. Hydrogen RKS.…

A: % w/w for an element in a compound = (mass of element/total mass of compound) × 100%

Q: 19.18. What is the empirical formula of a mineral contg. 3.37% HO; 19.10% AlO: 21.00% CaO; and…

A: Empirical formula is the simplest formula of a compound which show ratio of atoms or molecules in…

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: The amount of sodium produced on decomposition of sample NaF is 28.8g. The mass ratio of sodium to…

Q: how many atoms per particle in sulfur(s8)?

A: Atomic mass of sulfur = 32g Molecular mass of S8 =8×32=256g

Q: 50 4 grams of impure sodium chloride is dissolved in water and excess of silver nitrate solution is…

A: Molar mass of NaCl = 58.44g/mol Molar mass of AgCl = 143.32g/mol Molar mass of Cl = 35.45g/mol

Q: Using the % mass composition of N, calculate the mass of nitrogen present in 9.41 grams of the amino…

A:

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given  Wt. If iron = 0.210 g  Wt. Of iron oxide = 0.341 g  Atomic weight of iron = 55.85 g/mol…

Q: Calculate the mass, in grams, of 982 atoms of cesium, Cs( 1 mol of Cs has a mass of 132.91 g).

A: Concept: The mass of one mole of the atom is known as molar mass. The molar mass of cesium is 132.91…

Q: 10) A patient is to be given 2 litres of 0.9% sodium chloride via intravenous infusion over a 24…

A: From given concentration of sodium chloride we can calculate the millimoles of sodium.

Q: A rock is 17.5% by mass fayalite (Fe2SiO4), 17.6% by mass forsterite (Mg2SiO4), and the remainder…

A: Answer: First of all we will calculate the mass of each element in fayalite, frosterite and silicon…

Q: How many grams of magnesium would you expect to find in 56.8g of magnesium nitrate?

A: Given : Mass of magnesium nitrate i.e Mg(NO3)2 = 56.8 g

Q: Calculate the mass, in grams , of 382 atoms of cesium, Cs (1mol of Cs has a mass of 132.91 g).

A:

Q: the percentage of oxygen by weight in AL*2(SO*4)*3 atomic weight: al= 27, S= 32, O= 16

A: The given organic compound is as follows: Al2(SO4)3 = Al2S3O12 The atomic mass of O = 16 amu The…

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.