What is the oxidation number of Na in Na2SO4 What is the oxidation number of H in CaH2 What is the oxidation number of O in KClO4 What is the oxidation number of O in Na2Cr2O7 Is this a redox reaction?  HCl (aq) + NH3 (aq) → NH4Cl (aq)

Q: Consider the redox reaction shown below: IO3-1(aq)    +  5 I-1 (aq)   +   6 H+1 (aq)   →   3 H2O…

A: Oxidation: The oxidation is defined as the loss of electrons or  an increase in the oxidation state…

Q: What is the balanced chemical equation, and net ionic equation of (NH4)2S (aq)+V(NO3)3 (aq)

A:

Q: Marble, a material used in buildings and statues, has the chemical composition CaCO₃. CaCO₃ reacts…

A: Balanced chemical reaction for the dissolution of marble is as follows: In order to calculate the…

Q: What is the molarity of an HF solution if 20.00 mL of this solution requires 17.56 mL of 0.1258 M…

A: Here given, Volume of HF (V1) = 20 mL Strength of HF (S1) =? Volume of NaOH (V2) = 17.56 mL Strength…

Q: The following chemical reaction takes place in aqueous soluti ZnCl,(aq)+2 KOH(aq) →Zn(OH),(s)+2…

A: To write the net ionic reaction of the below reaction. ZnCl2aq+2KOHaq→ZnOH2s+2KClaq

Q: 7.7 g of citric acid (MM = 192.1 g/mol) can be titrated with NaOH according to the following…

A: By stoichiometry of reaction : At equivalent point : Moles of H3C6H5O7 = Moles of NaOH  given mass…

Q: f it takes 22.75 mL of 1.25 M H 3 PO 4 to neutralize 17.95 mL of NaOH, what is the molarity of the…

A: Molarity of a solution is the concentration of a solution which is the number of moles of solute to…

Q: For each chemical reaction listed in the table below, decide whether the highlighted atom is being…

A: Step 1:1. NH₃(aq) + 2O₂(g) → HNO₃(aq) + H₂O(l) (Highlighted atom is N)  In NH₃, nitrogen (N) has an…

Q: ce the equation below using the smallest set of whole numbers. What is the coefficient of H₂O?…

A: A balanced chemical equation is an equation in which an equal number of atoms of each element are…

Q: Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox")…

A:

Q: A 10.0 sample of vinegar (acetic acid) is titrated with a 0.495 M NaOH solution. End point is…

A:

Q: Part A A 26.00 mL sample of an unknown H3PO4 solution is titrated with a 0.130 M NaOH solution. The…

A: Given: Volume of H3PO4 solution = 26.00 mL Molarity of NaOH = 0.130 M Volume of NaOH solution =…

Q: What is the molarity of a Ba(OH)2 solution if 30.0 mL is required to neutralize 3.45 mL of 1.30 M…

A: Given :-  Balanced chemical equation :-  3Ba(OH)2 + 2H3PO4 → Ba3(PO4)2 + 6H2O  Molarity of H3PO4…

Q: The use of antacids reduces the overall strength of an acid. An antacid tablet containing calcium…

A: Moles of HCl = Molarity of HCl × Volume                         = 0.60 M × 45 ml…

Q: The following chemical reaction takes place in aqueous solution: Zn(NO3)₂(aq) + (NH4)2S(aq) → ZnS(s)…

A: Given that a chemical reaction is ZnNO32aq + NH42Saq → ZnSs + 2NH4NO3aq. We have to write the net…

Q: aye S (s) + 4Pb (s) 4PbS₂ (s) 2N₂ (g) + 50₂(g) → 2N₂O5 (8) 3Cr(NO₂)₂ (aq) + 2Al(s) → 3Cr(s) +…

A:

Q: Classify the following type of reaction:

A: Reactions are classified into different types  1. Combination reactions. 2. Decomposition reactions.…

Q: Which of the following is the oxidizing agent in the following redox reaction?   2KMnO4(aq) +…

A: 2KMnVIIO4(aq) + 5Na2C2IIIO4(aq) + 8H2SO4(aq) → 10CIVO2(g) + 2MnIISO4(aq) + K2SO4(aq) + 5Na2SO4(aq) +…

Q: Complete and balance the following molecular equations, and indicate if each reaction should occur.…

A: The Answer to the following question is-

Q: Calcium carbonate tablets can be used as an antacid. The label on a bottle of a generic antacid…

A: Given: mass of each tablet=500mg Molarity of HCl=0.6M

Q: The following chemical reaction takes place in aqueous solution: SnCl,(aq)+2 NaOH(aq)Sn (OH),(s)+2…

A:

Q: 4. How many of the following are redox reactions? i) HBr(g) + H2O(1) → H3O*(aq) + Br(aq) ii) 2CUS(s)…

A: Redox reaction: A reaction which is accompanied by change in the oxidation state element…

Q: Malonic acid, H2C3H2O4 (aq), is a diprotic acid, so 2 moles of hydroxide ions are required per mole…

A: A neutralization reaction can be described as a chemical reaction in which acid and base react…

Q: What is the concentration of a solution of a diprotic acid (i.e., H2A) which required 19.25 mL of…

A:

Q: From the chemical equation below, what is the oxidizing agent? 2Cr^3+(aq) + 6Cl^1-(aq) --> 2Cr(S) +…

A: Redox reaction: Redox reaction is a type of chemical reaction in which the oxidation states of atoms…

Q: Which of the following is best described as an acid–base reaction? Cu(s) + H2S(g) → CuS(s) + H2(g)…

A: The reaction that best fits the description of an acid-base reaction is:…

Q: Which species is the oxidizing agent in the following reaction? Mg + 2 HCl → MgCl2 + H2

A: Oxidizing agent - It is a reactant that removes electrons from other reactants during a redox…

Q: how many electrons are transferred in the following reaction? 2Al(s)+6H^+(aq)--> 2Al^3+(aq)+3H2(g

A: This is a redox reaction, because it's have both half reduction and half oxidation reaction.  First…

Q: what is the ionic equation for Ca(NO3)2(aq)+NaCl(aq) What is the net ionic equation for…

A: The aqueous solutions of Calcium nitrate and sodium chloride react with each other to produce…

Q: 25.50 mL of 0.955 M HBr are required to neutralize 18.40 mL of a Ca(OH)2 solution.What is the…

A: 25.50 mL of 0.955 M HBr are required to neutralize 18.40 mL of a Ca(OH)2 solution.The molarity of…

Q: Qualitative Analysis- Determination of a Halide During the experiment Qualitative Analysis-…

A: Given that, To identification of a halide, sodium halide (NaX) solutions were reacted with chlorine…

Q: In the net ionic equation for the following, what are the spectator ions?  NH4NO3(aq) + KCl(aq) →…

A: Steps to write net ionic equation is  1) First write the balanced equation 2) Write total ionic…

Q: 6 FeCl2(aq) + K2Cr207(aq) + 14 HCI(aq) → 6 FeClg(aq) + 2 CrClg(aq) + 2 KCI(aq) + 7 H20(1) Identify…

A: The given reaction is, 6FeCl₂(aq) + K₂Cr₂O7(aq) + 14HCl(aq) → 6FeCl3(aq) + 2CrCl3(aq) + 2 KCl(aq) +…

Q: The following chemical reaction takes place in aqueous solution: AgF(aq)+Nal(aq) → AgI(s)+NaF(aq)…

A: Given,  AgF(aq) + NaI(aq) ---------> AgI(s) + NaF(aq)

Q: Which of the following reactants would likely produce Hydrogen gas as a product? a)  H2SO4 (aq) +…

A: Some metals react with acids to produce hydrogen gas. When the reduction potential of the metal is…

Q: Which of the following is considered both a double-replacement and neutralization reaction? KCIO3…

A: A double displacement reaction is a type of reaction in which reactant ions exchange places to form…

Q: A quantity of 18.68 mL of a NaOH solution is needed to neutralize 0.4218 g of KHC8H4O4. What is the…

A: Stoichiometry of a balanced chemical gives the relationship between the amount of reactants and…

Q: Which of the following ionic compounds is INSOLUBLE in water? NaF LICI O NH4CI O SrSO4 O Pb(NO3)2

A: ionic compound which have high lattice energy than hydration energy they are not soluble in water.

Q: What type of gas is formed from the following chemical reaction? FeCO3 (aq)   +   HCl (aq)   →

A: Balanced reaction means number of atom in reactant side is equal go number of atom in product side.…

Q: solution

A: Dear student I have given answer to your question in the image format.

Q: Write the balanced net ionic equation including heat in the equation. The reaction is exothermic.

A: The question is based on concept of chemical reaction. we have to write the net  ionic equation for…

Q: In the following reaction, what ions, if any, are spectator ions? Pb(NO3)2(aq) + 2NaCl(aq) PbCl2(s)…

A:

Q: Consider the reaction below.   S2O32‒(aq) + 4 Cl2(g) + 5 H2O(l) → 2 SO42‒(aq) + 8 Cl‒(aq) + 10…

A: Oxidation number of an element represents the number of electrons lost or gained by the element. The…

Q: NaHSO3(aq) + HNO3(aq)

A: According to given equation,  NaHSO3(aq.) + HNO3(aq.) ----> NaNO2 + H2O(l) + CO2(g)

Q: What element is being oxidized in the following redox reaction? Mg2 (aq) + NH4"(aq) > Mg(s) + NO3…

A: Interpretation: We have to tell which of the following species is being oxidized.

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.