What is the percent of N in N,H¸?

Q: a. Oxalic acid is a crystalline solid with the molecular formula H2C2O4. A sample of pure oxalic…

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Q: a. How many carbon atoms are in the sam b. How many hydrogen atoms are in the s c. How many oxygen…

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Q: Calculate the number of moles in 4.9 x 103 grams of vitamin C (C6H8O6).

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Q: Calculate the number of atoms in sample. 2.26 g Hg

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Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Assuming the molecular formula of compound is CaHbOc  And since moles = mass / molar mass Hence…

Q: In the molecular formula c6h1205 how many oxygen atoms are there

A: A molecular formula involves the chemical symbols for the component elements accompanied by numeric…

Q: Part C Based on your answer in Part B, how many electrons are in this amount of 13C? Express your…

A: The electron is a subatomic particle with the symbol e or, whose electric charge is one elementary…

Q: A student started with a sample of an element X of 10.34 grams. The mass of oxygen is 1.59 g. given…

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Q: A modern penny weighs 2.5g but is only 2.52% copper by mass. Calculate the number of Cooper atoms in…

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Q: how to find how many electrons given the mass of a sample and the known amount of atoms in the…

A: Given that the mass of the sample and the atoms in an element are known.  From that the number of…

Q: of atoms of

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Q: How many miles of O atoms are in 18.1 mol if CH2O

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

Q: Calculate the number of atoms in 940 μg of scandium. Answer in scientific notation.

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…

Q: 1 mol of Na atoms has more atoms than 1 mol ofH atoms. OTrue False

A: Mole is a concentration term used to express the amount of a substance like we use dozen.  1 dozen =…

Q: How many atoms of He can a balloon that has a 19 cm diameter hold? The density of Helium is 1.18…

A: Given data,Diameter of balloon=19cmRadius of balloon=19cm2=9.5cmDensity of He=1.18g/L

Q: H,O, + HgO - H,0 + 0,+ Hg How many atoms of H,0, are in 5.36 x 102 atoms of HgO?

A: Given, the chemical reaction as follows,H2O2+HgO→H2O+O2+Hgnumber of atoms of HgO =5.36×1022 atomswe…

Q: Calculate the percentage (%) of elements in Li;PO4.

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Q: what has more atoms.....  a gram of Cesium or a gram of Hydrogen.  Not sure how to figure it out and…

A: The number of atoms in one gram of cesium is:

Q: What is the average atomic mass of element X if it exists as 19.90% with a mass of 10.7 and 80.10%…

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Q: Calculate the number of atoms in 95.3 μg of scandium. Enter your answer in scientific notation.

A: Given,  95.3 μg of scandium

Q: 1.75 x 1025 selenium atoms contains ____ moles of selenium. Report your answer to 3 s.f. (hint: this…

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Q: b. U.00004042 fng 4.042 x 10-5 mg Which sample of element is heavier? Show appropriate calculations…

A: Given: The moles of N2 = 2 moles. The moles of Fe = 1 mol. The moles of F2  = 1.5 moles.

Q: ) SEP Computational Thinking Sketch a flowchart for determining the number of representative…

A: We have given the element/ compound W and mass of the element/compound is G.  We have to find the…

Q: 009 (part 1 of 4 chemist measured out 8.25 g of copper(II) romide tetrahydrate (CuBr2 · 4 H2O). How…

A: Molar mass of CuBr2.4H2O=295.4151 g/molNo, of Oxygen atoms present in the molecule =4Mass=4×(16…

Q: Calculate the molecular mass of carbon dioxid Show your work.

A: Calculate the molecular mass of CO2

Q: The theoretical value for the ration of moles of F to moles of Pt is (exactly) 4.  Calculate the…

A: Percentage error is generally the difference in magnitudes of experimental data and actual data…

Q: What is the range of values that would be within a power of 10 of Avogadro's Number?

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Q: ny atoms c

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Q: Compute the empirical formula of the following: 19.1% Sn and 80.9% I

A: Empirical formula of the compound can be calculate with the help of percentage composition of…

Q: 17) What is the mass of CO that contains one trillion carbon atoms?

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: Sample of MGSO4 x NH2O contains 7.81 grams of MGSO4 and 8.91 grams of H2O, What is the value of N?

A: Given: Mass of MgSO4 = 7.81 g Mass of H2O = 8.91 g Molar mass of MgSO4 = 120.366 g/mol Molar mass of…

Q: Question 7

A: The molecular formula of acetic acid has to be determined.Molecular formula:The molecular formula is…

Q: QUESTION 11 What is the mass of 6.06E20 nitrogen atoms?

A: Molar mass is the mass of Avogadro's number of molecules.

Q: Based on your answer in Part B, how many electrons are in this amount of 13C? Express your answer…

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Q: What is the mass of a 98 Liter sample of water vapor (H,0)?

A: Given :- volume of water vapor = 98 L  To calculate :- mass of water vapor in sample

Q: How many atoms of He can a balloon that has a 15 cm diameter hold? The density of Helium is 1.18…

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Q: A lab scenario determined that a sample was 75.42 g C, 6.64g H, 8.38g N and 9.56g O. The molecular…

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Q: How do you get from 100g of magnesium to find the number of atoms

A: For a chemical compound or a molecule, the number of moles can be defined as the ratio of the mass…

Q: Calculate the formula mass of each:  (to TWO decimal places with the UNIT amu) A. SnF2  B. AlOH3

A: Solution :    Formula mass of a substance is calculated by the sum of atomic masses of all the ions…

Q: Calculate the number of Li atoms (NLi) in 5.6 mol of Li.

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Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: Calculate the mass

A: At NTP, temperature T1 = 293.15 K Volume, V1 = 24.04 L Temperature, T2 = 30 ◦C or 303.15 K Volume,…

Q: Calculate the mass of 5.70×1022 tungsten atoms.Express your answer with the appropriate units.

A: Given:Number of tungsten atoms= 5.70×1022Mass of the given number of atoms is to be calculated.

Q: Question attached

A: 1 Mole of Antimony contains number of atoms equal to Avogadro's number, i.e., 6.023*1023.

Q: =-Li cat. H2SO4 HCO,H 90 оС THF, -78 °C

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Q: Use the References to access important values if needed for th 1. What is the mass of 1.53x1024…

A: We know that: 1 mole of a substance consist of 6.022*1023 atoms.    (A) We need to calculate the…

Q: How many atoms are in 112 g of iron

A: First of all, calculate the no of moles of iron then no. Of atoms in the calculated moles.