Calculate the percentage of nitrogen, by mass, in Ca(NO3)2.

Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022 .how many electrons present in the…

A: Number of copper atoms = 2.8 × 1022  We need to determine number of electrons present.

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

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Q: Calculate the percentage composition for CC1 . Mass percentage of carbon = %3D Mass percentage of…

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Q: Calculate the mass in grams of 1.10 x 104 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A: Mass of H2S in grams = 6.210 g

Q: Formaldehyde, CH2O, is a toxic gas with a pungent odour. It is used in large quantities for the…

A: CH2O It is made o C, H and O

Q: The mass percent of CO3 in ca(CO3)2 ( atomic mass C= 12, O = 16, Ca = 40) is O 60% O 77.77%) O 50% O…

A: Mass percent can be calculated by the formula given below as; Mass percent=Mass of the…

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: Calculate the mass percent of H in C3H6O3.

A: Introduction- The mass percent of any element is calculated by the ratio of mass of the element in…

Q: Calculate the theoretical mass percent of barium in BaCl2∙2H2O.

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Q: When 0.220 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given : Mass of iron=0.220 g Atomic weight of iron=55.85 g/mol Atomic weight of oxygen=16 g/mol Mass…

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

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Q: Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains…

A: The given data contains, mass of dolomite = 7.81 g. mass of calcium = 1.70 g

Q: Calculate the mass percent of manganese (Mn) in potassium permanganate (KMnO4).

A: First of all, before leading to the solution we will learn about the meaning of mass percent. The…

Q: What is the mass percentage of oxygen in phosphorus acid (H3PO3)? O 62.2 % 42.8 % 58.5 % 82.0 % 37.8…

A: Mass percentage of any element can be calculated by: Mass percentage=Mass of element in the…

Q: Which element comprising Ma(OH)2 has the highest percentage by mass?

A: The compound given is Mg(OH)2. Assuming 1 mole of Mg(OH)2.

Q: Determine the percent by mass platinum in cisplatin, PtCl2(NH3)2. O a. 0.650% O b. 58.5% O c. 65.0%…

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Q: 1. Sodium is an alkaline metal which is very reactive and so is not found free in nature. Sodium…

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

Q: Give the mass percent of carbon in C14H19NO2 O 38.80% O 2.78% O 5.17% O 71.40%

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Q: The active ingredient in baking soda is NaHCO3. How many grams of NaHCO3 are needed to provide 2.15…

A: The active ingredient in baking soda is NaHCO3.  One atom of NaHCO3. contains = 3 atoms of O. or, 1…

Q: Determine the percent by mass platinum in cisplatin, PtCl2(NH3)2. O a. 58.5% O b.0.650% C. 65.0% O…

A: Given,  Cisplatin, PtCl2(NH3)2

Q: Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in C12H22O11.

A: Each substance/molecule gets formed by combining some element's atom with certain proportion. The…

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: How do I calculate the theoretical mass percent of barium in a sample of BaCl2*2H2O?

A: Generally, the %mass is determined by dividing the species mass with total mass of sample which then…

Q: Calculate the mass of dinitrogen tetroxide N2O4 that contains a million (1.0 x 10^6) oxygen atoms.

A: Molar mass of N2O4 is 92.011 g/molTherefore 92.011 g of N2O4 contains 6.022 x 1023 molecules As, 1…

Q: Sodium is an alkaline metal which is very reactive and so is not found free in nature. Sodium forms…

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

A: Na oxidation state is +1 and S oxidation state is -2 when they both combines together they form Na2S…

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

A: The symbol for iron is Fe The symbol for oxygen is O The molar mass of Fe is 55.85g/mol The molar…

Q: Calculate the number of atoms in a 2.92 x103 g sample of boron.

A: Firat calculate number of moles.

Q: iron (II) phosphate Ca3(PO)2->Fe,N +COCNJ2+FePo4 1. How many grams of calcium phosphate must be used…

A: The stepwise solution is as follows -

Q: What is the percentage of nitrogen, by mass, in calciumnitrate?(a) 8.54% (b) 17.1% (c) 13.7% (d)…

A: Calcium nitrate is a compound of formula CaNO32. One mole of calcium nitrate contains two moles of…

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: what is the mass percentage of water in Zn(NO3)2*6H2O?

A: Mass percentage of water = Mass of waterMass of Zn(NO3)2.6H2Ox100There are total six water molecule…

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: Determine the mass percentage of carbon, C, hydrogen, H, and oxygen, O, in C,H2O6. R

A: Given :-  Molecular formula of glucose = C6H12O6  To be determined :-  Mass percentage of C, H and O…

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: Calculate the percentage composition for N2F4. Mass percentage of nitrogen : % Mass percentage of…

A: The percentage composition of different atoms present in a compound can be calculated by dividing…

Q: A metal (M) forms an oxide with the formula M₂O. If the oxide contains 3.835% O by mass, what is the…

A: Formula of metal oxide is M2O. Molar mass of oxygen is 16 g.mol-1.  Consider the molar mass of metal…

Q: What is the mass percentage of oxygen in the compound C 6H 60 8? g? O 62 % O 72% O 6.2% O 58% O 76%

A: We can solve this problem by using the following equation Mass % of the element= (mass of…

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…

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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: 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 6.5% by mass fayalite (Fe2SiO4), 14.2% by mass forsterite (Mg2SiO4), and the remainder…

A: In this question given: Fe2SiO4- Fayalite has 6.5% and 14.2% by mass forsterite, remaining is 79.3%…

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: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

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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.