What unit is used to measure weighted average atomic mass? angstrom amu O gram nanogram O milligram

Q: 8.* A4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water when heated.…

A: The question is based on the concept of experimental chemistry. we have to calculate the empirical…

Q: Fill in the blanks by writing the name of the definition: is a substance made up of only a single…

A: an element is a substance that cannot be broken down into any other substance every element is made…

Q: 7. Fe2O3 + CO → Fe + CO₂2 8. CO + I205 →→ CO₂ + I2 3+ 2+ 9.2 Fe ³+ (aq) + Sn²+ (aq) → 2 Fe ²+ +…

A: Oxidation is the process that can be explained as the loss of electrons whereas reduction is defined…

Q: Calculate the mass in grams of each elemental sample.(a) 1.32 * 1020 uranium atoms(b) 2.55 * 1022…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many atoms of copper are in a pure copper penny that weighs 2.15 g? (1 amu = 1.6605 10-24 g)

A: Given that the mass of copper penny is 2.15 g. The number of moles can be calculated using the given…

Q: What is the average mass, in grams, of one Zna Multiple Choice O 1661 x 10 24 O 65.39 amu O 65.39 g…

A: Molar mass of Zn = 65.38 g/mol

Q: Seawater contains 2.80 x 10-8% (by mass) of carbon. How many grams of carbon are there in 3.52 L of…

A: We have to calculate the mass of carbon.

Q: What is the mass, in grams, of 1.51 ×-1018 atoms of gold present in one nanoparticle? eTextbook and…

A: Given: Number of gold atoms = 1.51 × 1018 atoms.

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: Solve this

A: The element contains one type of atoms only. The compound has two or more elements. The chemical and…

Q: Does each chemical formula represent an element or a compound? a. H 2 b. H 2O 2 c. S 8 d. Na 2CO 3…

A: An element is made up of same type of atom whereas a compound is made up of more than 1 type of…

Q: Determine the mass in grams of 2.25 x 1021 atoms of copper. (The mass of one mole of copper is 63.55…

A:

Q: An unknown element is a mixture of 129X and 132X. the average mass of X is 130.79 amu. What is the…

A: Let x be the percentage abundance of 129X and (1-x)  be for 132X Average mass = 130.79 amu  Atomic…

Q: Which elements have molecules as their basic units?(a) helium (b) oxygen(c) iron (d) bromine

A: The elements which have  molecules as their basic units has to be given,

Q: What is the mass of 4.50 x 1022 cu atoms? Multiple Choice O 747 x 102 amu O 747 x 1029 4.75 g

A:

Q: 8. Given what you know about the law of conservation of mass, fill in the missing mass below. D0.…

A: law of conservation mass said that mass is conserved during a reaction or any physical changes…

Q: Which of the following compounds would contain 12 atoms of oxygen? Co(NO3)2 O Alz(HPO4)3 O NazCr207…

A:

Q: What is the average mass, in grams, of one Zn atom? Multiple Choice 65 39 g 65.39 amu 1.09 x 1022g…

A: The mass of an atom can be determined from the molar mass and Avogadro's number. The number of atoms…

Q: Silicon (Si) Mass number = 14 %3D I. ****** **** Oxygen (O) Mass number = 16

A: Silicon  Atomic number = 14 Mass number = 28 Electronic configuration = 1s2 2s2 2p6 3s2 3p2  Number…

Q: There are two gas compounds that are made out of element  A and B. This is the mass percentage of…

A: Given: Mass percentage: Compound 1: 30.43% A, 69.57% B Compound 2: 63.64% A, 36.36% B

Q: 2.44 Write the 4X notation for each atomic depiction: (a) (b) (c) 6e 40e 28e 6p 7n0 40p 50n 28p 33n

A: In this question ( 44 ) we want to Write a notation of an atom in terms of ZXA

Q: Jotmest Atoms are the smallest spherical particles that make up any matter. If 6.0x1023 atoms of…

A: Introduction: Atomic mass is an average of the masses of a number of different atoms.It is also…

Q: Calculate the mass (in grams) of a tungsten atom. A. 1.107 x 10 - 26 B. 1.661 x 10 - 24 g C. 3.054 x…

A: Molar mass of tungsten = 183.84g/mol

Q: Find the mass of 1 molecule of NaH in gram. а. 23.99 b. 3.98 x1023 С. 12 d. 3.98 x10-23

A: Atomic mass of sodium (Na) and hydrogen (H) atoms are as follows; Atomic mass of Na = 22.99 g/mol…

Q: All samples of a given compound, regardless of their source or how they were prepared, have the same…

A: The combination of various components to form compounds is regulated by certain fundamental laws.…

Q: The number of electrons is Chopse. Chouse... 48 123 51 72

A: Filling of electrons in orbitals in increasing order of energy obey hunds and pauli's principle is…

Q: The ratio of the 2nd I.E. of He to the 3rd I.E. of Li

A: The amount of energy required to remove an electron from an atom to its gaseous state is known as…

Q: Which of the following statements is/are correct about the figures below? Select all that apply.…

A: Statement 1 is incorrect because oxygen is diatomic molecule but in the figure monoatomic molecules…

Q: With the information given in the table, what would the percent by mass of the reacted sodium…

A: Dear student, we dont answer graded questions. We answer only homework help questions. Please post…

Q: how many atoms are in a copper pipe that weighs 8.25 g

A: Given, Mass of copper = 8.25 g Number of atoms = ? Note: Atomic mass of Cu = 63.546 g/mol 1 mol of…

Q: In the following descriptions the particles are atoms, molecules, or ions.To which sample above does…

A: Comparing solid, liquid and gas, gases are more compressible since most of the volume of a gas have…

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: write T if underlined word is correct, if false, write the correct answer 1. Pyrolytic Carbon is…

A:

Q: write T if correct, write the correct answer if false 1. Pyrolytic Carbon is used for medical…

A: Idea about pyrolytic carbon, discovery of electrons and neutrons

Q: 1. ssm Hemoglobin has a molecular mass of 64 500 u. Find the mass (in kg) of one molecule of…

A: Hemoglobin is present in red blood cells whose function is to carry oxygen from lungs to body…

Q: Consta ns 1 P If red spheres represent oxygen atoms, blue spheres represent nitrogen atoms, and all…

A:

Q: How many copper atoms would there be in 70.3 milligrams of copper

A: Mass of Cu atom = 1.06 × 10-22g  Molar mass of Cu = 65.55 g/mol  70 mg Cu = 70 × 10-3 g Cu

Q: Calculate the mass of Cu in g from 8.20 kg CuFeS2

A: From the chemical formula it is clear that 1 mole CuFeS2 contains 1 mole Cu. Molar mass of…

Q: 1 Empirical Formula 2 Mass Percent 3 Percent Composition 4 Anhydrous Compound A compound with a…

A: The empirical formula of a compound does not give the definite proportions of the element in a…

Q: if the density of an element 1.5 g/ml with volume 1.8 L, its mass will be .. 2700 O 2.7 O 1200 1.2…

A: Given question is asking about the mass of substance, if density and volume of solution is present .…

Q: A loss of 0.4 mg of Zn occurs during an analysis of that element. Calculate the percent error (% E)…

A: Percentage error is defined as the ratio of change in the amount of substance by initial amount of…

Q: MCQ 9: Two Greek words 'element' and 'measure' constitutes the word A. spectrometry B. stoichiometry…

A: In Greek language, word stoikhein means the element. And word metron means measure. That is why word…

Q: A. Sentence Completion. Complete each statement with a word/ concept in the blank of the item. 1. is…

A: The chemical formula defined the number of atoms or the type of atoms present in the compound. The…

Q: Use the mass spectrum of lead shown here to estimate 100% - the atomic mass of lead. Esti- mate the…

A: INTRODUCTION: Mass spectroscopy is defined as the technique used to determine the atomic mass of an…

Q: Calculate the mass of dinitrogen tetroxide N2O4 that contains a million ×1.000106 oxygen atoms.

A:

Q: Calculate the mass, in kg, of sample. 1.22x10^27 manganese atoms

A:

Q: Determine the number of atoms in 1.96 mL of mercury. The density of mercury is 13.5 g/mL

A: Given: Density of mercury = 13.5 g/mL Volume of mercury = 1.96 mL We know,…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.