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: what

A: This is not an redox Reaction ( means this reaction doesn't contain both half Reaction reduction and…

Q: Xenon was long thought to be an inert gas, as it was considered to be incapable of forming chemical…

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Q: What element is being  reduced in the following redox reaction?  C 5H 12O 2( aq) + NaMnO 4( aq) → C…

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Q: In which reaction does the oxidation number of hydrogen change? A) HCl (aq) + NaOH (aq) → NaCl (aq)…

A: Answer Option B. 2Na(s) + 2H2O(l)  → 2NaOH(aq) + H2(g)

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: Determine the Oxidation States of each element in the following reactions:…

A: The given first reaction is, Fes+O2g→Fe2O3g......(1) The second ion is, Fe2+aq......(1) The third…

Q: Which one of the following reactions would produce a gas?     None of these reactions would…

A: In a chemical reaction, when two or more reactants combine they produce products. Products can be…

Q: The following chemical reaction takes place in aqueous solution: AgF (aq) + NH4Br (aq) → AgBr (s)…

A: The net ionic equation is a chemical equation in which only species are mentioned which participate…

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

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Q: Complete the balanced neutralization equation for the reaction below: H₂SO₄(aq)+Mg(OH)₂(aq)→

A: H2SO4 is acid and Mg(OH)2 is a base and in a reaction between H2SO4 and Mg(OH)2, water and salt are…

Q: Consider the following balanced redox reaction and determine which of the following statements is…

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Q: In which reaction does the oxidation number of hydrogen change? A CaO (s) + H2O (/) → Ca(OH)2 (s) B)…

A: We have to identify the following given reactions in which the reaction does the oxidation number of…

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: The following chemical reaction takes place in aqueous solution: FeSO4(aq)+Na₂S(aq) →…

A: The given reaction is---- FeSO4 (aq) + Na2S (aq) -------> FeS (s) + Na2SO4 (aq) Here reactants…

Q: Which of the following is NOT a redox reaction? V2O5(s) + 5 Ca(l) → 2 V(l) + 5 CaO(s) 2KNO3(s) →…

A: Redox reactions are comprised of two parts, a reduced half and an oxidized half, that always occur…

Q: In which reaction does the oxidation number of oxygen increase? A) Mgo (s) + H2O (I) → Mg(OH)2 (s) B…

A: In the decomposition of H2O the hydrogen gas and oxygen gas is evolved At initial the oxidation…

Q: The following chemical reaction takes place in aqueous solution: 2 AgNO3(aq) + (NH) CO3(aq)…

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Q: How many moles of electrons are transferred per mole of reaction in the following redox reaction?…

A: Given redox reaction: 3Cl2 (aq) + 2Al (s) → 2Al3+ (aq) + 6Cl- (aq) We have to calculate the number…

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: 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: The following chemical reaction takes place in aqueous solution: AgNO3(aq)+KCl(aq) →…

A: The balanced reaction taking place is  AgNO3 (aq) + KCl (aq) --------> AgCl (s) + KNO3 (aq)

Q: NaHSO3(aq) + HNO3(aq)

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

Q: Identify each element(s) in the following reaction that is not balanced.  6 KOH (aq)  +  2 H3PO4…

A: in Balanced chemical equation  no of atoms of each species is equal on reactent and products side.

Q: Consider the following balanced redox reaction. Cl2(g) + 2 Br- (aq) → 2 Cl-(aq) + Br2(l) Which of…

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Q: The following chemical reaction takes place in aqueous solution: FeBr2 (aq) + NH42S (aq) → FeS…

A: In Ionic equation ion written only aqueous solution . Compound not dissociate in solid form.

Q: In which reaction does the oxidation number of hydrogen change? A CaO (s) + H2O (1) → Ca(OH)2 (s) B)…

A: The oxidation number is the charge occupied by respecting atom in the molecule.

Q: Calculate the number of moles of H3PO4 that will react with 1.29 mol of NaOH in aqueous solution to…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

Q: The following chemical reaction takes place in aqueous solution: 2 FeCl₂(aq)+3 K₂S(aq) →Fe₂S3(s)+6…

A: The chemical reaction is given and we have to find out the net ionic equation for the following…

Q: The following chemical reaction takes place in aqueous solution:…

A: Recall the reaction, FeBr2(aq)+Na2S(aq)→FeS(s)+2NaBr(aq)

Q: Identify the driving force for the chemical reaction: Pb(NO3)2(ag) + 2NAOH (aq) → Pb(OH)2(s) +…

A: Chemical reaction are those in which one or more substances are converted to one or more different…

Q: The following chemical reaction takes place in aqueous solution: AgNO3(aq)+KCl(aq) →AgCl(s)+KNO3(aq)…

A: The balanced reaction taking place is AgNO3 (aq) + KCl (aq) --> AgCl (s) + KNO3 (aq)Since AgNO3,…

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.