This picture represents Atoms of an element O Molecules of an element O Molecules of a compound A mixture

Q: Describe how elements are combined into molecules andcompounds.

A: Chemical bonds link elements together to form more complex molecules called compounds. A compound…

Q: Define element and compound.

A: Given terms,       Elements and compounds.

Q: e mass o

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Q: Name Element "Teams' Similar to teams of ballplayers, elements have symbols (abbreviations or logos)…

A: Dear Student since you have posted multiple parts question..... we will solve the first question…

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: The left side of the reaction has one green element and two blue elements because they are of two…

Q: A student started with a sample of Cu of 8.66 grams . After the sample was burned in air, the…

A: The mass of Cu sample = 8.66 grams The mass of sample of Oxide after burning the Cu  ( Cooper oxide…

Q: 1.2x10^23 gold atoms calculate into mass, in grams

A: Given:Number of gold atoms = 1.2 x 1023 atoms.Molar mass of gold (Au) = 199.97 g/mol.

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 difference between atoms, molecules and compounds?

A: Atoms are the fundamental units of molecules and compounds. It consists of a positively charged…

Q: In a series of experiments, a chemist prepared three differentcompounds that contain only iodine and…

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Q: Which pair of statements about mass is true? O A. After a physical change the total mass is the…

A: The pair of statements about mass is true has to be given,

Q: A sample of Aluminum foil contains 6.30 x 10^23 atoms. What is the mass of the foil

A: One mole of any substance contains 6.023 X 1023 units of that substance (atoms, ions or Molecules) .…

Q: . Polonium-210 is an alpha-emitting radioactive isotope that causes irreversible damage to organs…

A: Two questions based on nuclear reactions and general chemistry that are to be accomplished.

Q: 2.77 Identify the following as elements or compounds: NH3, N2, Sg, NO, CO, CO,, H2, SO2.

A: Matter is any substance that occupies space and volume. Matter is classified into pure substances…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: What is the mass of a 12.56L sample of carbon dioxide? A. 17.9 g B. 8.9 g C. 4501 g D. 24.7 g

A: 22.4 L of CO2 = 44g 1L of CO2=44/22.4g 12.56 L of CO2= 44*12.56/22.4 12.56 L of CO2=24.7g

Q: Which of the following gases are elements? O NH, O 0, O N,0 Rn Ar O 0, so, O H,S HCN NO NO, O He

A: Elements are the pure substances that are made up of only one kind of atoms, We are given some list…

Q: Which of the following statements is correct about atom? An atom does not have mass O For neutral…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: Which of the diagrams represents a gaseous element? 8. OK m ఇం

A: State of the matter (solid,liquid or gaseous) depends upon the extent of force of attraction present…

Q: A compound contains 43.84 % carbon atoms, 3.65 % hydrogen atoms, and 8.68 % fluorine atoms by mass.…

A: Given : Mass percent of C = 43.84 % Mass percent of H = 3.65 % Mass percent of F = 8.68 % Assuming…

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

Q: After two elements react to completion in a closed container, the ratio of their masses in the…

A: In general chemistry, a number of theories were proposed to explain the nature of matter, particles,…

Q: The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu,…

A: To calculate : average atomic mass of Cl

Q: In the following images, the white spheres represent hydrogen atoms and the red spheres represent…

A: An element contains only one form of the atoms. A compound is formed by combining two or more types…

Q: A sample of alumminum foil contains 7.5*1023 atoms. What is the mass of the foil?

A: Given : Number of aluminium atoms in the foil = 7.5 X 1023

Q: An elemental molecule is a molecule containing: two or more atoms of two different elements in…

A: A molecule is an electrically neutral atom or group of atoms that can exist independently.

Q: In a test of the Law of Multiple Proportions, two different compounds composed of elements X and Y…

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Q: Pure gold is usually too soft for jewelry, so it is often alloyed with other metals. How many gold…

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Q: To which classes of matter—element, compound, and/ormixture—do the following apply: (a) law of mass…

A: The law of conservation of mass deals with the conservation of matter and law of definite…

Q: This picture represents a a. mixture of elements. b. a compound. Oc chemically bonded elements. O d.…

A: 11. An element is a substance that consists of atoms of same kind.They are the pure form of a…

Q: A tiny sample of gold contains  1.5 x 10^16 atoms. The mass of the gold sample is ______  μg.

A: Given the number of gold atoms, the tiny sample contains = 1.5*1016 atoms We have to find the mass…

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

A: Atomic number (Z) = number of protons (p) = number of electrons (e) Mass number (A) = Number of…

Q: "Noble gases are non-reactive" is an example of a O chemical change O physical change O chemical…

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Q: How do the molecules of a compound differ from the moleculesof an element?

A: Molecules are group of atoms where the atoms are held together by a chemical bond. They can result…

Q: Fill in the missing information: element name element symbol Са F zinc bromine Cr

A: The element oxygen is represented by O.

Q: What is the mass of 4.91x10^21 platinum atoms?

A: Given: Number of platinum atoms= 4.91×1021 we know that Molar mass of platinum=195.084 g/mol

Q: Which sample contains the greatest number of atoms?a) 14 g C                  b) 49 g Cr…

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Q: total mass i

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Q: PHYSICAL

A: Oxygen is gas and it is a diatomic homonuclear molecule and it is formed from Oxygen element.…

Q: If a sample contained 9.65 x 1023 atoms of iodine, how many grams would this be? Round to one…

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Q: he mass o

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Q: The mass of one aluminum atom is 4.48x10^-23 grams. How many aluminum atoms are there in 9.45x10^4…

A:

Q: The mass of a single aluminum atom is 4.48×1023 grams. How many aluminum atoms would there be in 185…

A: Given that, The mass of a single aluminum atom is 4.48×10-23grams = (4.48×10-23×103)milligrams =…

Q: What is the mass of 6.77x10^24 nitrogen atoms?

A:

Q: Write the molecular and structural formulas for the compounds represented by the following molecular…

A: Here we have to write the molecular and structural formula of above model system molecules-

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: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: What is the mass of 1.85x10^23 atoms of nitrogen?

A: Given  Number of atom of Nitrogen = 1.85 × 1023 atom  Mass of Nitrogen = ?

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.