d. 1. If in a reaction, copper is reduced; what happen to its number of electrons? c. Remained Constant d. Varies Randomly a. Increased b. Decreased

Q: Immediately before you use a pipette to transfer a volume of a solution, what should you rinse it…

A: Before transferring a volume of solution pipette should be rinsed with the solution being…

Q: Blast furnaces extra pure iron from the iron(III) oxide in iron ore in a two step sequence. In the…

A: ∙ Mass of iron =1kg=1000g       Percent yield of this step=94%       So theoretical…

Q: C. Aqueous solutions of magnesium chloride and sodium hydroxide react to produce solid magnesium…

A: The reaction in which two compounds react by an interchange of ions to produce two novel compounds…

Q: The number of electrons transferred in this reaction is?

A:

Q: Want you to explain what is a chemical reaction?

A: Various compounds behave in different way when they are reacted with each other.Sometimes they form…

Q: Automobile air bags employ a chemical reaction involving the rapid decomposition of sodium azide…

A: 2NaN3 →2Na(s)+3N2(g) Molar Mass of NaN3= 65.021 g/mol Volume of gas at STP= 22.4L Standard…

Q: We want to know the N content of a substance. We can convert this N in the substance ammonia. a)…

A: Given: convert this N in the substance ammonia. a) What can we do with the ammonia converted?  the…

Q: Describe four observations that are evidence for a chemical reaction.

A: The four observations that are evidence for a chemical reaction has to be given,

Q: A sample of 5.11 g5.11 g of solid calcium hydroxide is added to 32.0 mL32.0 mL of 0.500 M0.500 M…

A: HCl        +        Ca(OH)2      →        CaCl2              +          H2O    on reactant side…

Q: Based on the model, where do atoms in the products of a chemical reaction come from? How do you…

A: The atoms in the products comes from the atoms in the reactant .

Q: In a chemical reaction, explain what happens to the reactants, products, and energy.

A: In chemical reaction, two substances react with each other and forms new substances.In a reaction,…

Q: All changes sav When copper metal is added to silver nitrate in solution, silver metal and copper…

A: We can determine the mass of the silver produced from the balanced equation. The balanced equation…

Q: After a lab, you measure the mass of magnesium oxide produced to be 0.41 g. This was produced with a…

A:

Q: A sample of 9.66 g of solid calcium hydroxide is added to 39.5 mL of 0.340 M aqueous hydrochloric…

A: Chemical equation is the representation of a chemical reaction, in which the reactants and products…

Q: Vrite a balanced placen that occurs in queous solution, a total ionic equation, and net ionic…

A: Calcium hydroxide reacts with iron chloride to give calcium chloride and iron hydroxide.

Q: Complete the balanced molecular chemical equation for the reaction that takes place as solid…

A: The balanced equation can be defined as the chemical equation where the number of each atom on both…

Q: Decomposition definition

A: Decomposition reactions are defined as reactions where a single compound breaks into multiple…

Q: How does temperature affect a chemical reaction?

A: Given question is :  How does temperature affects a chemical reaction = ?

Q: Fluorine gas is bubbled into an iron(III) chloride solution. Chlorine gas is collected and the…

A:

Q: g decomposition equations

A:

Q: For complete combustion of methane, CH, with 100% air, find the mass of oxidizer

A: Oxidizer is also known as oxidizing agent, it have tendency to oxidized other compound and reduced…

Q: Magnesium is able to E copper, and copper is able to magnesium. Zinc is able to m, and magnesium is…

A:

Q: Question 4: How do we decide if a process is chemical?

A: Process are mainly two type in arbitrary. One is chemical process and other one is physical process…

Q: 19 OS A student adds a solution of ethanoic acid to zinc carbonate in an open flask on a balance.…

A: Applying concept of mass conservation in chemical reaction.

Q: The substance which gets used up in any reaction is called _________.

A: The substance which gets used up in any reaction is called _________.

Q: e of decomposition of the materi ount of the material eded to completely decompose a

A: As we know,Radioactivity follows first order kinetics,  So, Half life time = 0.693/k Where, K =…

Q: Tell some experience that is similar to a single replacement reaction. Describe the occurrences, and…

A: A reaction is the interaction between the molecules of same type or different type that results in…

Q: What type of chemical reaction may involve a metal atom transferring one or more electrons to a…

A: A displacement reaction is a reaction in which one of the substituents of the part of the reactant…

Q: If in a reaction, copper is reduced; its number of electrons has:

A: Reduction is the process of gain of electrons.  And oxidation is loss of electron.

Q: What is the gas produced in the reaction of ? ?? and ???? An aqueous solution of carbonic acid, ? ??…

A: Note - Since the name of the substances to be reacted are not given in ques 1, we will do only ques…

Q: precipitate

A: This question is related to precipitation.

Q: What is the importance of heat of reaction in the laboratory? 2. Cite some factors that could…

A: In a chemical reaction, there are some reactants are present. These reactants are converted to…

Q: What happens to a substance when it becomes oxidized? Reduced?

A: If the substance gained electrons we predict that the substance is to be reduced while the substance…

Q: In an experiment, you used 4.00 mL of 0.100 M Copper (II) Nitrate and converted it into Copper (II)…

A: Theoretical yield :- The maximum amount of product that can be produced as per balanced chemical…

Q: For Questions 20-24 consider the following scenario: A 0.8390 g of an unknown sample containing…

A: Given data, Mass of unknown sample=0.8390gMass of filter paper+precipitate=3.2174gMass of filter…

Q: [ Select ] O Li + [ Select ] O N2 → [ Select ] O LigN Balanced the unbalanced equation using the…

A:

Q: cost =

A:

Q: 1. Eighty grams of Silver was obtained from one hundred and forty grams of Silver nitrate. The…

A: We are given a chemical reaction, and amount of reactant taken and amount of product , we have to…

Q: Carbon atoms entering the flame are part of Organic molecules The flame needs oxygen because it is…

A: Interpretation - To complete the story with the help of given words.

Q: 1. In the olden days, US minted pennies were pure copper, but copper got so expensive that a pure…

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

Q: What type of reaction is

A:

Q: The net ionic equation for this reaction is?

A: The above reaction is an example of double-displacement reaction.Here the cations and the anions of…

Q: 8. The following data were collected for several compounds of nitrogen and oxygen: Mass of Oxygen…

A: Mass of Nitrogen that reacts with 1.00 g of N in the compound W= 0.5711g  Mass of Nitrogen that…

Q: Calcium oxide, as Solid reacts to produce calcium metal and gaseous oxygen. what kind of reaction is…

A: Given -> Calcium oxide = CaO Calcium= Ca Oxygen= O2

Q: What is the term for the substance in a chemical reaction that controls the maximum amount of…

A: The substance in a chemical reaction that controls the maximum amount of product is limiting…

Q: What do you call the type of chemical reaction in which heat is absorbed?

A:

Q: d)  Using the Ideal Gas Law, determine the experimental moles of hydrogen gas collected. e)…

A:

Q: The reaction between magnesium and hydrochloric acid is a single displacement reaction which…

A: In this question, we have to give a balanced chemical equation, write reaction between magnesium and…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.