Why is it important to be aware of the ingredients of the food you eat? Is fish good for your health? Why? Why is it important to gain knowledge on the properties and characteristics of some elements?

Q: Why is understanding of chemistry important to the study of human anatomy and physiology

A: Chemistry  Chemistry is a branch of science that involves the study of the composition, structure…

Q: Most abundant metal on the surface of the earth:(a) Iron(b) Aluminium(c) Calcium(d) Sodium

A: There are many metal on the surface of the earth but the one that is most abundant on the surface of…

Q: Which statement explains how balanced chemical equations obey the law of conservation of mass?…

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Q: Predict the charge of the ion formed by each of the following elements. A) Mg, Express your answer…

A: The atoms of elements attain stable noble gas configuration by losing or by gaining of electrons and…

Q: An electric current is passed through 60.0 mL of water (H2O). This converts the water into 53.33 g…

A: Given  Volume of water = 60 mL  Mass of Oxygen  = 53.33 gram Mass of hydrogen gas  = 6.67 gram…

Q: what is the mass percent of each component in the mixture formed by adding 12 g of calcium sulfate ,…

A: Total mass of the mixture can be calculated as follows: Total mass = Mass of CaSO4+Mass of…

Q: 3. A student obtained the following data for a sample. The sample dissolved in water The sample…

A: A bond is defined as the attractive forces which holds two or more atoms together in stable molecule…

Q: Given the reactants for each situation below, predict the products of the reaction and write a…

A: The chemical reaction indicates the combination of two or more reactants in a specific molar ratio…

Q: 2. Making a cheese sandwich can be represented by the chemical equation%; Bd, + 2Ch > 2BdCh What…

A: According to the reaction, Bd2 + 2Ch ----> 2BdCh   2 bread slices combine with 2 cheese slices to…

Q: What mass of HCl in grams is neturalized by a dose of milk of magnesia containing 3.26g Mg(OH)2?

A: Given :- mass of Mg(OH)2 = 3.26 g  To calculate :- mass of HCl (in g)

Q: 1. Ethane gas, C:H6, burns in air (i.e reacts with oxygen in air ) to form carbon dioxide and water:…

A: Ethane combustion to form carbon dioxide and water, from this balanced stoichiometric equation used…

Q: 1. Fe + CuSO, → 2. Zn + 0,→ 3. Sil, + Mg

A: 1)Fe + CuSO4  -----> FeSO4 + Cu (a type of displacement reaction in which more reactive Fe…

Q: 1. Is mass really conserved during a chemical change? Describe what it means to go through a…

A: All matter can be classified as solid, liquid, and gases mainly. In these physical states of matter,…

Q: a) If sea water contains 3.5% NaCl, by mass, how many grams of NaCl can be obtained from 1.00 gallon…

A: Density of sea water = 1.02 g/mL

Q: Describe the PHYSICAL PROPERTIES of the following Specifically, what type of matter is this? (e.g.…

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Q: Using your knowledge of how properties change when a compound is formed, explain why sodium chloride…

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Q: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

A: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

Q: The concentration of Al3+ ion in a sample of spring water is 24.7 ppm. What mass of Al3+ ion is…

A: 1. Given that : Concentration of Al3+ ion in spring water (in ppm) = 24.7 ppm Density of spring…

Q: What is the relationship between calculating the amount of iron in a vitamin pill and physical…

A: The analysis of present iron in a supplement tablet can be done by a redox titration reaction. Iron…

Q: Classify each micronutrient in Figure 2.2as a metal, nonmetal, or metalloid.

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: hich metal is the best conductor of electricity? Choose from the choices below: Gold…

A: The answer of this question is given in step 2

Q: How many of the following elements are metals? Ca Al Sn S As Bi

A: The properties of metals are--- Metals are solid in room temperature (except mercury), they are…

Q: Directions: 1. Read the following substances commonly found in your homes, know its uses and its…

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Q: What would you expect to observe about your anhydrous copper(II) sulfate on a hot, humid day? O it…

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Q: Which of these is NOT true of chemical changes?

A: Substance can change two ways  1. Physical change  2. Chemical change   we should study major…

Q: How does increasing the temperature change the physical properties of an object? 0000 DUT a…

A: Increasing the temperature increases the average speed of the reactant molecules.

Q: Question 13

A: The density represent about the mass of sample that contains in 1 mL of solution.Hence, 1mL of…

Q: Which hypothesis describes the behavior of molecules when a substance changes from a gas to a…

A: When a solid substance is heated then it transfers to its liquid state. If the liquid state is…

Q: gas. D. Matter with a defined shape and defined volume. E. The formation of new substances by…

A: We have to match the right answer

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: find a pattern for which compounds conduct electricity when dissolved in water, and which don't.

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Q: Fact, Law, Hypothesis, or Theory? __ An object less dense than the air flies up on its own. __…

A: Factt: It is known or proved to be true. Law: A scientific law is the description of an observed…

Q: Two students were having a disagreement about whether NaNO3 mixed with water results in a physical…

A: Dissolving a solid into a liquid is a physical change because only the state of matter changes and…

Q: 1. Spaghetti is one of the favorite foods of kids and it has several ingredients. The following…

A: Atomic mass of Carbon = 12g/mol Atomic mass of Hydrogen = 1g/mol Atomic mass of oxygen = 16g/mol…

Q: Use the References to access important values if needed for this question. 1A 8A H 2A 3A 4A SA 6A 7A…

A: Isoelectronic species are the species having same electrons. Electron of Cl- = (17+1)= 18e-…

Q: If green spheres represent chlorine atoms, yellow-green spheres represent fluorine atoms, white…

A: We are given that, Green spheres represent chlorine atoms. yellow-green spheres represent fluorine…

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

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Q: Explain the principle of the distillation process?

A: Distillation method is used to separate two miscible liquids having different boiling points without…

Q: In an experiment involving the extraction of essential oils from a plant, 7.5 mL of benzene (C6H6,…

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Q: 7. To make a ham sandwich, you choose to use 2 pieces of bread (B), 4 slices of ham (H), and 1 slice…

A: Given, Peices of Bread = 14 Slices of Ham = 24 Slices of cheese = 7

Q: A large number of atoms of the same kind is

A: Matter is classified into following types  1 Pure  substances        2. Mixture    1. In Pure…

Q: The nature of the elemental matter depends on which factor in the atom and what factors are added to…

A: Valence electrons are the electrons present in the outermost shell.

Q: How do the properties of compounds compare to the properties of the elements from which they are…

A: Element is a pure substance that is made up of only one kind of atom. A compound is a pure substance…

Q: 1)Describe the PHYSICAL PROPERTIES of the following substances? 2)Specifically, what type of…

A: Physical properties of following substances. 1. Halogen : Halogens are non metals. Fluorine and…

Q: Think of your everyday life and look for examples of chemistry. Give a chemical formulae/reaction or…

A: Chemistry is the study of the properties and the changes of matter. Chemistry and chemical compounds…

Q: Given the Ka values, estimate the pKa value of each of the following acids without using a…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: A 67.2 g sample of a gold and palladium alloy contains 3.07×1023 atoms . What is the mass…

A: Given : Mass of sample = 67.2 g And total number of atoms = 3.07 X 1023 atoms Assuming the moles of…

Q: During a filtration or distillation experiment, we separate a mixture into its individual…

A: A mixture is a combination of two or more pure substances that retain their chemical identities.  It…

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".