A substance composed of 2 or more elements in a fixed, definite proportion is considered a homogeneous mixture. a heterogeneous mixture. a molecular compound an alloy. a solution.

Q: Use the References to access important values If needed for this question. The formula for sodium…

A: We know that : moles = weight of substance/molecular weight of substance  1 mole of substance =…

Q: Carbon dioxide gas reacts with solid calcium oxide to produce solid calcium carbonate (CaCO3). Write…

A: Calcium oxide will combine with carbon dioxide (for instance, in the air) at room temperature (about…

Q: Which of the following statements about compounds is TRUE?     A substance that cannot be broken…

A: Which of the following statements about compounds is TRUE? The answer is given below with…

Q: An element is composed of tiny indivisible, indestructible particles called atoms. All the atoms of…

A: The first postulate of Daltons atomic theory has been modified as atoms further consists of…

Q: Write the correct chemical formula for the following compounds and molar mass. calcium sulfide:…

A: Write the correct chemical formula for the following compounds and molar mass--

Q: Decide whether each pair of elements in the table below will form an ionic compound. If they will,…

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Q: Identify the choice that best completes the statement or answers the question. Analysis of a…

A: According to law of constant proportion, the ratio of mass of elements in any fixed compound will…

Q: The formula for sulfur hexafluoride is SF. a. How many molecules are in 6.61 grams of sulfur…

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Q: define, compare and contrast what are meant by the emperical and molecular formulas for a substance…

A: Empirical formula = Empirical formula of a compound is the chemical formula is the simplest ratio of…

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

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Q: A chemical change is a change in composition resulting in a product with different properties.…

A: The objective of the question is to verify the definition of a chemical change.

Q: Molecules and compounds are made up of many atoms, however, not all molecules are compounds. Which…

A: molecule: substance which have two or more atoms called molecules. compound:- substance which have…

Q: 4) A 5.416 g sample that contained NaCl and BaCl2 2H₂O was heated. After heating the sample had a…

A: “Since you have posted a multiple questions we will solve the first question for you. To get the…

Q: 7. The seven most abundant ions in seawater make up more than 99% by mass of the dissolved…

A: The seven abundant ions in sea water makes 99 % by mass of dissolved compounds .

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: Compounds are "neutral." What does that mean?

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Q: Which of the following statements about compounds and molecules are true?  not all compounds are…

A: When two or more chemical elements combine via chemical bonds, they form a new species called a…

Q: Compound 1 has a composition of 23 mass % of element A and 77 mass % of element B. A and B also form…

A: Law of multiple proportion:  As per the law of multiple proportion, if 2 elements form more than one…

Q: How many MOLECULES of carbon tetrabromide are present in 7.44 grams of this compound ?   How many…

A: molecular mass CBr4 is 332 g i .e we have 0.0224 mole of CBr4

Q: what is barye unit ? What is its definition?

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Please i need to answer all the questions. And for question six her is a picture of the model

A: Ionic bonds are formed by transfer of electrons while covalent bond are formed by sharing of…

Q: hydrochloric acid + magnesium → hydrogen gas + magnesium chloride List two physical / chemical…

A: The question is based on the concept of chemical reactions. we have to write physical and chemical…

Q: You take three compounds, each consisting of two elements (X, Y, and/or Z) and decompose them to…

A: The problem belongs to the simplest ratio of masses.

Q: An air conditioner compressor contains pure CClF3, also known as the refrigerant R-13. CClF3 has a…

A: We know that, density can be expressed as the mass per unit volume, i.e.…

Q: Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00 g…

A: In order to find the Chemical formula of the compound we use the concept of empirical formula…

Q: A student is looking at a hexagon that a teacher is swearing is a molecule.  It’s a friggin’ square.…

A: Whatever the compound is, either a hexagon or a square, it is a closed ring. The molecule in which…

Q: Which of the following represent molecules that are compounds? A B с OD ос OB OA 88 8 D

A: A molecule is a group of two or more atoms held together by chemical bonds. A compound is a…

Q: In order to correctly name a compound, you must first be able to classify the type of compound.…

A: CBr3KClHClRbOHCu2OSi2S4Au2Br10H3PO4

Q: When a log completely burns in a campfire, the mass of the ash is much less than the mass of the…

A: The law of conservation of mass states that matter cannot be created or destroyed in a chemical…

Q: The formula for carbon monoxide is CO. a. How many molecules are in 7.67 grams of carbon monoxide?…

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Q: Which of the following species is NOT a compound? A. Glucose, C6H12O6 B. Water, H2O C. Methane gas,…

A: Molecule: It is a chemical substance formed by a single atom of the element or by the combination of…

Q: ollowing compound? CH3 CH,CH,CH, CH,-C-CH,–CH–CH, CH,CH,

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".