Balance the equation NH3 + O2 = HNO3 + H2O using the algebraic method or linear algebra with steps. of atoms in products. 5. There are three main steps for writing the net ionic equation for HNO3 + NaOH = NaNO3 + H2O (Nitric acid + Sodium hydroxide). It reacts with water to form hydronium ion and nitrate. First, we balance the molecular equation. If S < 0, it is exoentropic. ru Webcuo reacts with hno3. 2 HNO 3 + Ca (OH) 2 Ca (NO 3 ) 2 + H 2 O. Candidate of Chemical Sciences, editor-in-chief of Guide-scientific.com. HNO3(aq)Nitricacid(Acid)+H2O(aq)Wate(Base)rH3O+(aq)Hydroniumion(Conjugateacid)+NO3(aq)Nitrate(Conjugatebase). The law of conservation of mass says that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a chemical reaction as at the beginning. AgCl is a compound made up of two atoms of silver and one atom of chlorine, and is also known as silver chloride. The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. Similar Examples of Equalizing a Chemical Reaction, About methods for studying chemical reactions, designing, Guide-scientific.com experts debunk myths about new, Article was publishedon the website of the journal, Balanced Chemical Equation Solution Ba(OH)2+H2SO4BaSO4+2H2O, Balanced Chemical Equation Solution 3B2H6+6NH32B3N3H6+12H2, Balanced Chemical Equation Solution Cu+2H2SO4CuSO4+SO2+2H2O, Balanced Chemical Equation Solution 2Fe+3H2SO4Fe2(SO4)3+3H2, Balanced Chemical Equation Solution 2Al+3H2SO4Al2(SO4)3+3H2, Balanced Chemical Equation Solution 2Al+3CuCl22AlCl3+3Cu, Balanced Chemical Equation Solution 2HgO2Hg+O2, Balanced Chemical Equation Solution 2NaCl+H2SO4Na2SO4+2HCl. If G < 0, it is exergonic. How do chemical equations illustrate that atoms are conserved? In a full sentence, you can also say cuo (copper(ii) oxide) reacts with hno3 (nitric acid) and produce cu(no3)2 (copper(ii) nitrate) and h2o (water). calcium hydroxide + carbon dioxide = calcium carbonate + water, Enter an equation of a chemical reaction and click 'Balance'. In many cases a complete equation will be suggested. HF + H2O (Hydrofluoric acid + Water) Wayne Breslyn 634K subscribers 289 48K views 2 years ago In this video we will look at the equation for HF + H2O and write the products. The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. HNO3 + H2O H3O + NO3 Equation is already balanced. The limiting reagent row will be highlighted in pink. Transfer the coefficient in front of each substance in the balanced The answer will appear below, Always use the upper case for the first character in the element name and the lower case for the second character. Nitric Acid + Sodium Hydroxide = Sodium Nitrate + Water. Substitute immutable groups in chemical compounds to avoid ambiguity. HNO3 + H2O ? You can use parenthesis () or brackets []. Word equation: Nitric acid + Calcium carbonate Water + Carbon dioxide + Calcium nitrate. When the equation Sn + HNO3 - Sno.+ NO2 + H2O is balanced in SnO2 + acidic solution, what is the smallest whole-number coefficient for Sn? As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged this follows from the law of conservation of mass of substances. How can I balance this equation? Synthesized polymer in the form of a spiral staircase, H2SO4 + KMnO4 + NaNO2 H2O+ K2SO4 + MnSO4 +NaNO3, H2SO4 + K2Cr2O7 + NaNO2 H2O+ K2SO4 + Cr2(SO4)3 +NaNO3, HNO3 + Mn(NO3)2 + NaBiO3 H2O+NaNO3+ HMnO4 + Bi(NO3)3. Experts are tested by Chegg as specialists in their subject area. 101.73 grams. In this video we'll balance the equation N2O3 + H2O = HNO2 and provide the correct coefficients for each compound. If G > 0, it is endergonic. a NO 3 + b H 2 O = c NH 3 + d OH. Reaction stoichiometry. Balance the equation NO3 + H2O = NH3 + OH using the algebraic method or linear algebra with steps. Balancing Strategies: This chemical equation is a bit challenging to balance because you need to carefully keep . 27. Instructions on balancing chemical equations: In this reaction the oxidation step is multiplied by 1 and the reduction step by 4. Ag2CO3 + 2HCl -> 2AgCl + CO2 + H2O. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). [HNO3 (BA), NO3- (CB)] [H2O (BB), H3O+ (CA)b. The ionic equation for this neutralisation reaction is K (+) (aq) + OH (-) (aq) + H (+) (aq) + NO3 (-) (aq) K (+) (aq) + NO3 (-) (aq) + H2O On cacellation of the common K (+) and NO3 (-) ions on both sides of the above ionic equation, we get the net ionic equation: H (+) (aq) + OH (-) (aq) H2O Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion, specify charge after the compound in curly brackets: {+3} or {3+} or {3}. Identify the correct sequence of the reactions. Calculate the mass of carbon in 250 grams of C2H3O2. 12.83 grams. The balanced equation will appear above. This is anoxidation-reduction (redox) reaction. Substitute immutable groups in chemical compounds to avoid ambiguity. Coefficients of 6 for H2O and 5 for CO2 will indicate a total of 16 O atoms or 8 molecules of the diatomic element, O2. Part A When the equation_NO2 + _H2O + _O2 __HNO3 is balanced, the coefficient of HNO3 is: O 2 O 5 none of the above Submit Request Answer. Step 2: Count the number of atoms of each element on both sides of the equation. We need to use 1 Sn, 1 SnO_2 , 4HNO_3 , and 4NO_2: Sn + 4 HNO_3SnO_2 + 4 NO_2 + H_2O (unbalanced). Answer link In English: nitric acid and water form a solution, it then solvates into its ions in the solution since #HNO_3# is soluble. One equation represents the oxidation step; the other represents the reduction step. WebQC is a web application with a mission to provide best-in-class chemistry tools and information to chemists and students. In this reaction, Ag2CO3 and HCl react to form two molecules of AgCl, one molecule of CO2, and one molecule of H2O. Multiply the two equations by the smallest whole numbers that will make the electrons lost by oxidation equal to the number of electrons gained by reduction. 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Introduction to General, Organic, and Biochemistry [EXP-48515]. You are given the reaction Cu + HNO3 Cu (NO3)2 + NO + H2O.Which pair of half-reactions represents the balanced half-reactions for the reaction? Use your graphing calculator's rref() function (or an online rref calculator) to convert the following matrix into reduced row-echelon-form: Simplify the result to get the lowest, whole integer values. You can also ask for help in our chat or forums. Since there are an equal number of atoms of each element on both sides, the equation is balanced. 4. Half-reactions: Complete the final balanced equation based on the half-reactions. Once you know how many of each type of atom you can only change the. X on complete reaction with another compound Y gave the product which did not respond to litmus test. Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles. Candidate of Chemical Sciences, editor-in-chief of Guide-scientific.com. How has molecular modeling technology evolved? HNO3 + H2O = H3O + NO3 Since there is an equal number of each element in the reactants and products of HNO3 + H2O = H3O + NO3, the equation is balanced. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). Enter either the number of moles or weight for one of the compounds to compute the rest. Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. Second, we write the. So another way to write H+ (aq) is as H3O+ . Reaction stoichiometry could be computed for a balanced equation. A minimum of 5 C and 12 H (a C5H12 molecule) suggests coefficients of 5 for CO2 and 6 for H2O. In many cases a complete equation will be suggested. Assign oxidation numbers to each element to identify the elements being oxidized and those being reduced. A little amount of X when tested with blue litmus turns to red. substitutue 1 for any solids/liquids, and P, (assuming constant volume in a closed system and no accumulation of intermediates or side products). Enter a chemical equation to balance: Balanced equation: 2 HNO 3 (aq) + Ba (OH) 2 (aq) = Ba (NO 3) 2 (aq) + 2 H 2 O (l) Reaction type: double replacement. Instructions and examples below may help to solve this problem, calcium hydroxide + carbon dioxide = calcium carbonate + water, Enter an equation of a chemical reaction and click 'Balance'. WebQC is a web application with a mission to provide best-in-class chemistry tools and information to chemists and students. Previous question Next question. Since the H+ (often called a proton) and the NO3 - are dissolved in water we can call them H+ (aq) and NO3 - (aq). Calculate the mass of hydrogen in 250 grams of C2H3O2. The limiting reagent row will be highlighted in pink. 2. Label Each Compound With a Variable Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. Appearance: White, waxy, opaque crystals; White hygroscopic solid in various forms. The skeletal equation is: P+HNO3 NO2+H2O+H3PO4. HXeO4{-} + OH{-} = XeO6{4-} + Xe + O2 + H2O. Part F Write balanced net ionic equation for NaOH (aq)+HNO3 (aq)H2O (l)+NaNO3 (aq) Express your answer as a chemical equation. Finally, check to ensure that both sides of the equation have the same number of atoms of each element. How to Balance: HNO 3 + CaCO 3 H 2 O + CO 2 + Ca (NO 3) 2. of atoms in Reactants. When we add HNO3 to H2O the HNO3 will dissociate and break into H+ and NO3 -. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Znco3 hno3 gives zn(no3)2 h2o co2 balance the equation - 56117630. bhupendar7148 bhupendar7148 21 hours ago Chemistry Secondary School Znco3 hno3 gives zn(no3)2 h2o co2 balance the equation New questions in Chemistry. S = Sproducts - Sreactants. The final balanced equation contains 1 atom of Sn 4 atoms of N , 4 atoms of H and 12 atoms of O on each side. HNO3 + NaOH NaNO3 + H2O Equation is already balanced. Enter either the number of moles or weight for one of the compounds to compute the rest. The answer will appear below, Always use the upper case for the first character in the element name and the lower case for the second character. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. Sodium chloride is the salt most responsible . No. Show more Show more How to balance Cl2O7 + H2O HClO4 The Glaser Tutoring. Name of the element. Units: molar mass - g/mol, weight - g. Please tell about this free chemistry software to your friends! Compound states [like (s) (aq) or (g)] are not required. When we add HNO3 to H2O the HNO3 will dissociate and break into H+ and NO3. Type of Chemical Reaction: For this reaction we have a chemical reaction. Compound states [like (s) (aq) or (g)] are not required. Equation: Acidic medium Basic medium Practice exercises Balanced equation Step 1. Sn + HNO_3SnO_2 + NO_2 + H_2O (unbalanced), Use the Change in Oxidation Number Problem-Solving Strategy. 68K views 4 years ago In this video we'll balance the equation HNO3 = H2O + NO2 + O2 and provide the correct coefficients for each compound. Reaction stoichiometry could be computed for a balanced equation. What is the chemical equation for photosynthesis? New substances are formed as a result of the rearrangement of the original atoms. 1. New substances are formed as a result of the rearrangement of the original atoms. When we add HF to. Nitric acid reacts with water to form hydronium ion which is a conjugate acid, while the nitrate is the conjugate base. Nitric acid with water reacts as follows: HNO 3 ( aq) Nitric acid ( Acid) + H 2 O ( aq) Wate ( Base) r H 3 O + ( aq) Hydronium ion ( Conjugate acid) + NO 3 ( aq) Nitrate ( Conjugate base) Appearance: White powder or colorless crystals. Hydrogen. The resulting matrix can be used to determine the coefficients. ____ Pb(OH)2 + ____ HCl ---> ____ H2O + ____ PbCl2. Balanced equation for combustion of liquid pentane: C5H12 (l) + 8 O2 (g) 6 H2O (l) + 5 CO2 (g) 1. Synthesized polymer in the form of a spiral staircase, H2O+HNO3+ NH3 + FeSO4 H2SO4 + Fe(OH)3 + NH4NO3, H2O+HNO3+ KBrO3 + SeO2 Br2 + KNO3 + H2SeO4, H2O+HNO3+ As2SO3 H2SO4 + NO + H3AsO4, H2O+HNO3+ Zn + RbOH NH3 + Rb2[Zn(OH)4], H2O+HNO3+ As2S3 H2SO4 + NO + H3As2O4, H2O+HNO3+ As2Se5 NO + H3AsO4 + H2SeO4, H2O+HNO3+ K2SO4 + MnSO4 H2SO4 + KMnO4 + HNO2, H2O+HNO3+ P4S11 H2SO4 + H3PO4 + NH4NO3, H2O+HNO3+ Mn(NO3)2 + NaBiO3 NaNO3 + HMnO4 + BiNO3(OH), H2O+HNO3+ Al + RbOH NH3 + Rb[Al(OH)4], H2O+HNO3+ KMnO4 + H2TeO3 KNO3 + Mn(NO3)2 + H6TeO6, H2O+HNO3+ KMnO4 + TcO2 KNO3 + Mn(NO3)2 + H6TcO6, H2O+HNO3+ As2Se3 NO + H3AsO4 + H2SeO4, H2O+HNO3+ KMnO4 + TeO2 KNO3 + Mn(NO3)2 + H6TeO6, H2O+HNO3+ MnSO4 + (NH4)2S2O8 H2SO4 + NH4NO3 + HMnO4, H2O+HNO3+ MnSO4 + (NH4)2S2O8 H2SO4 + HMnO4 + NH4NO2, H2O+HNO3+ Zn + RbOH NH3 + Rb[Zn(OH)4], H2O+HNO3+ As2S32S3 H2SO4 + NO + H3AsO4, H2O+ H2SO4 +HNO3+ Cu NO + CuSO4*5H2O, H2O+HNO3+ As22Se3 NO + H3AsO4 + H2SeO4, H2O+HNO3+ KMnO4 + TeO2 KNO3 + H6TeO6 + Mn(NO3), H2O+HNO3+ Ca3(PO4)2*CaF2 H3PO4 + HF + Ca(NO3)2 + Ca(NO3)2*H2O. Track your food intake, exercise, sleep and meditation for free. Part A When the equation_NO2 + _H2O +_02 _HNO3 is balanced, the coefficient of HNO3 is: 4 3 O 2 none of the above Submit Rust Answ No. If you do not know what products are, enter reagents only and click 'Balance'. If you do not know what products are, enter reagents only and click 'Balance'. Track your food intake, exercise, sleep and meditation for free. 1. Identify all of the phases in your answer. How has molecular modeling technology evolved? original equation. New substances are formed as a result of the rearrangement of the original atoms. We have now established the ratio of the oxidizing to the reducing agent as being four atoms of N to one atom of Sn. First, we balance the molecular equation. Drawing/writing done in InkScape. Please enable JavaScript in order to use this website. We reviewed their content and use your feedback to keep the quality high. Finally, check to ensure that both sides of the equation have the same number of atoms of each element. Appearance: Colorless, yellow or red fuming liquid. To equalize hydrogen, multiply HNO3 by 5 P+5HNO3 NO2+H2O+H3PO4. A You are given the reaction Cu + HNO3 Cu (NO3)2 + NO + H2O. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Ion-electron method (also called the half-reaction method) Oxidation number change method HNO 3 + H 2 O = NO 3 + H 3 O Reaction type: double replacement Get control of 2022! The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. In this video we will look at the equation for HNO3 + H2O and write the products. Use substitution, Gaussian elimination, or a calculator to solve for each variable. How can a chemical equation be made more informative? The substances that form as a result are called reaction products. Because each new equation presents a slightly different problem and because proficiency in balancing equations requires practice, lets work through two more examples. In the usual manner, balance the remaining elements that are not oxidized or reduced to give the final balanced equation: Sn + 4 HNO_3SnO_2 + 4 NO_2 + 2 H_2O (balanced). Substances that react are called starting materials or reactants. Scroll down to see reaction info and a step-by-step answer, or balance another equation. Separate the process into half reactions. To equalize nitrogen and oxygen, multiply NO2 by 5 P+5HNO3 5NO2+H2O+H3PO4. Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. Balance Chemical Equation - Online Balancer. 3. Balance the equation NH3 + O2 = HNO3 + H2O using the algebraic method or linear algebra with steps. LiOH, NaOH, KOH, RbOH, CsOH, Ca (OH)2, Sr (OH)2, Ba (OH)2 Strong electrolytes dissociate ___ into ions completely Weak electrolytes produce ions but predominantly as molecules that are ____ not ionized Ex: HC2H3O2 (aq) --> H+ + C2H3O2- Molarity equation Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide, To enter an electron into a chemical equation use {-} or e. To enter an ion, specify charge after the compound in curly brackets: {+3} or {3+} or {3}. Appearance: Colorless, yellow or red fuming liquid. Nitric acid is a relatively strong acid and oxidizing agent. 3. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 8.3 x 10^23 hydrogen atoms. HCl, HBr, HI, HNO3, HClO3, HClO4, H2SO4 What are the strong bases? Create an equation for each element (N, H, O) where each term represents the number of atoms of the element in each reactant or product. Screen capture done with Camtasia Studio 4.0. Balance the chemical equation by oxidation number method. How can I know the formula of the reactants and products with chemical equations? NO3 + H2O = NH3 + OH NO3 + H2O = NO2 + OH NO3 + H2O = HNO3 + OH Instructions and examples below may help to solve this problem You can always ask for help in the forum Get control of 2022! Then add electrons to bring the equations into electrical balance. Compound states [like (s) (aq) or (g)] are not required. Now write two new equations (half-reactions), using only the elements that change in oxidation number. Write the oxidation numbers below each element to avoid confusing them with ionic charge: Note that the oxidation numbers of Sn and N have changed. To balance NO2 + H2O = HNO3 + NO you will need to be sure to count all of atoms on each side of the chemical equation. G = Gproducts - Greactants. CN- + H2O (YIELD) HCN + OH-c. H2SO4 + Cl- (YIELD) HCl + HSO4-d. HSO4- + OH- (YIELD) H2O + SO42-e. O2- + H2O (YIELD) OH- + OH-f. [CU(H2O)3OH]+ + [Al(H2O)6]3+ (YIELD) [CU(H2O)4]2+ + [Al (H2O)5(OH)3+g. The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. To balance Nitrogen, Multiply HNO 3 by 2. Screen capture done with Camtasia Studio 4.0. With molar masses of 22.99 and 35.45 g/mol respectively, 100 g of NaCl contains 39.34 g Na and 60.66 g Cl. Thermodynamics of the reaction can be calculated using a lookup table. What is the percent composition of nitrogen in NH4? 863 160K views 4 years ago In this video we will look at the equation for HNO3 + H2O and write the products. To balance the chemical equation I2 + HNO3 = HIO3 + NO2 + H2O by algebraic method, we need to follow these steps: Step 1: Write the unbalanced equation. Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas. 1. Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. #HNO_3 + H_2O to HNO_3(aq) to H^+ +NO^(3-)#. Direct link to this balanced equation: Instructions on balancing chemical equations: Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas. Use the calculator below to balance chemical equations and determine the type of reaction (instructions). As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged this follows from the law of conservation of mass of substances. New substances are formed as a result of the rearrangement of the original atoms. A non-metallic element is converted into a compound X after a series of reactions. The substances that form as a result are called reaction products. Associate's Degree in Chemistry See tutors like this Based on stoichiometry HNO3 to H2O is 6:2 Use 9 grams to find the moles of HNO3 9 grams/63g/mol=0.143 moles of HNO3 HNO3:H2O 6:2 0.143*2/6=0.048 H2O moles is 0.048moles Mass of water =0.048moles*18g/mol=0.864g To the nearest tenth=0.9grams Upvote 0 Downvote Add comment Report In the usual manner, balance the remaining elements that are not oxidized or reduced to give the final balanced equation: Sn + 4 HNO_3SnO_2 + 4 NO_2 + 2 H_2O S n+4H N O3 S nO2 + 4N O2 +2H 2O (balanced) 6. If S > 0, it is endoentropic. Similar Examples of Equalizing a Chemical Reaction, About methods for studying chemical reactions, designing, Guide-scientific.com experts debunk myths about new, Article was publishedon the website of the journal, Balanced Chemical Equation Solution Ba(OH)2+H2SO4BaSO4+2H2O, Balanced Chemical Equation Solution 3B2H6+6NH32B3N3H6+12H2, Balanced Chemical Equation Solution Cu+2H2SO4CuSO4+SO2+2H2O, Balanced Chemical Equation Solution 2Fe+3H2SO4Fe2(SO4)3+3H2, Balanced Chemical Equation Solution 2Al+3H2SO4Al2(SO4)3+3H2, Balanced Chemical Equation Solution 2Al+3CuCl22AlCl3+3Cu, Balanced Chemical Equation Solution 2HgO2Hg+O2, Balanced Chemical Equation Solution 2NaCl+H2SO4Na2SO4+2HCl. Nitric acid with water reacts as follows: The reaction of Nitric acid with water can be treated as an example of Bronsted acid-base reaction, where hydronium ion acts as a conjugate acid of water and Nitrate ion acts as a conjugate base of Nitric acid. Remember: Oxidation produces electrons; reduction uses electrons. The equation is balanced. How can I know the relative number of grams of each substance used or produced with chemical equations? By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. Use uppercase for the first character in the element and lowercase for the second character. Please enable JavaScript in order to use this website. 3Cu +8HNO3 ->3Cu (NO3)2 +2NO +4H2O Students also viewed 1) When two plane mirrors are kept such that the angle between their reflecting surfaces is and a small object is placed . Label Each Compound With a Variable. Almost. For a better result write the reaction in ionic form. oxidationreduction equations to the corresponding substance in the The aq stands for aqueous something that is dissolved in water.Finally, when placed in water the H+ will combine with H2O to form H3O+, the hydronium ion. In this video we will balance the equation NO2 + H2O = HNO3 + NO and provide the correct coefficients for each compound.To balance NO2 + H2O = HNO3 + NO you will need to be sure to count all of atoms on each side of the chemical equation.Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Nitrogen dioxide + Water .Important tips for balancing chemical equations:Only change the numbers in front of compounds (the coefficients).Never change the numbers after atoms (the subscripts).The number of each atom on both sides of the equation must be the same for the equation to be balanced.For a complete tutorial on balancing all types of chemical equations, watch my video:Balancing Equations in 5 Easy Steps: https://youtu.be/zmdxMlb88FsMore Practice Balancing: https://youtu.be/Qci7hiBy7EQDrawing/writing done in InkScape. a NH3 + b O2 = c HNO3 + d H2O Create a System of Equations Step 3: Add coefficients to the molecules to balance the equation. Identify all of the phases in your answer. Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. All reactants and products must be known. Part A When the equation_NO2 + _H2O +_02 _HNO3 is balanced, the coefficient of HNO3 is: 4 3 O 2 none of the above Submit Rust Answ Part A When the equation_NO2 + _H2O + _O2 __HNO3 is balanced, the coefficient of HNO3 is: O 2 O 5 none of the above Submit Request Answer.