you have an aqueous solution of calcium nitrate, what are the ions in solution?     2Ca+ + NO3-     Ca2+ + NO3-     Ca2+ + 2NO3-     Ca2+ + NO32-   QUESTION 2 Calculate the number of carbon atoms in 15g of C2H6O (46 g/mol).     3.9x1023     9.0x1025     2.3x10-21     0.65

Q: QUESTION 35 When a solution of ammonium chloride (NH4C) is added to a solution of lead(1) nitrate…

A: When the NH4Cl is added to [Pb(NO)3]2, PbCl2 is formed as a precipitate along with the NH4NO3.A…

Q: 2 Fe + 3 CuCl2 --> 2 FeCl3 + 3 Cu What is the mole ratio of iron chloride (FeCl3) to copper chloride…

A: Mole ratio can be calculated by dividing the stoichiometric coefficients of the given species.

Q: How many moles of ions are produced if 1 mole of Na3PO4 is completely dissolved in water?

A: The salt given is Na3PO4  Hence the salt is having Na+ cation and PO43- anion.

Q: When AgNO3 (aq) reacts with K3PO4 (aq), what will be the chemical formula of the precipitate? LE…

A: Given :-  AgNO3(aq) + K3PO4(aq) →  To determine :-  chemical formula of precipitate (if formed) A…

Q: Calculate the mass of sodium in 21.5 g of NaCIO3. O 32.9 g O 4.65 g O 0.202 g O 0.465 g

A:

Q: =: Balance the following equations.

A: As per Law of consevation of mass "All atoms of different elements must be equal on both sides of a…

Q: An aqueous solution of CaCl2 weighs 6.3 kg. The solution has 8.5 moles of CaCl2 present in it. The…

A:

Q: A solution is prepared by dissolving 20.0 g of NaI in enough water to make 300.0 mL of solution. How…

A:

Q: How many hydrogen atoms are in 0.1488 g of phosphoric acid , H3PO,? 2.743 x 1021 atoms H STARTING…

A:

Q: Question 14 Which equation illustrates the conservation of mass? O H2 + O2 --> 2 H20 O H2 + Cl2 -->…

A: The law of conservation of mass states that in a chemical equation, the atoms of reactants and atoms…

Q: How many hydrogen atoms are present in 907.6 g of sucrose (C12H22O11)? (Molar mass of carbon =…

A: Given,mass of sucrose = 907.6 g molar mass of sucrose(C12H22O11) = ( 12 x 12.011 g/mol + 22 x 1.008…

Q: In the reaction Na2CO3(s) + 2HCI(aq) → 2NACI(aq) + H20(1) + CO2(g), how many moles of CO2will be…

A: ★ Answer : Correct option is 0.346 mol.   ★ Solution :   The given reaction is - Na2CO3(s) + 2 HCl…

Q: Question 13 Compute the mass of KCI needed to prepare 1000 mL of a 1.50 M solution. Show your work.…

A: Given- Volume=1000mL=1L Concentration=1.50M

Q: estion 9 of 16 Macmillan Learning Calculate the molarity of the following solutions. Use molar…

A: The formula of Molarity is ->  Molality= mole of solute / volume of solution (L)  Mole = weight /…

Q: Given the equation: 2 Al + 6 HCI --> 3 H2 + 2 AICI3 How many moles of HCl are required to produce…

A: ★ Answer : Correct option is • 12    ★ Solution :  • Given equation is  2 Al + 6HCl →3 H2 + 2 AlCl3…

Q: How many moles and numbers of ions of each type are present in the following aqueous solution? Enter…

A:

Q: Which of the following setups would you use to obtain the total number of ions in 15g of K₂Cr₂O7? 15…

A: Given mass of K2Cr2O7 =15gWe have to find the correct setup to obtain the total number of ions in…

Q: Detemine if the following chemical equation is balanced Ca(NO3)2 + 2 NaCI -CaCl2 + 2 NaNOS O…

A:

Q: Calculate the molecular weights of the following compounds.

A: The molecular weight or molecular mass is defined as the total mass of a compound which is equal to…

Q: The concentration of saturated NaOH is 50.0% w/w and the density is 1.52 g/mL. If exactly 7.50 mL…

A: The concentration of saturated  NaOH solution is 50% w/w and the density is 1.52 g/ml . If exactly…

Q: 5. Determine the following a) the number of moles in 10g of potassium b) the number of atoms in 5 g…

A: 5) Determine the following a) Given, mass of potassium = 10 g moles of potassium = ? Note: molar…

Q: Can you please solve this questions 1.What is the mass in grams of 3 moles of potassium chlorate,…

A: In this question, we have to solve both the parts.

Q: QUESTION 18 A compound has an elemental analysis of 49.4% K, 20.3% S, and 30.3% O by mass. What is…

A:

Q: Question 16 Which of the following must always be true in a dilution process? A V1>V2 B) C1>C2 c)…

A: Dilution for a solution is defined as to add more solvent( in maximum case solvent is water ) to the…

Q: Question 4 A solution is made by dissolving 60.0 g of AlCl3 in enough water to make 250.0 mL of…

A:

Q: Determine the correct coefficient  for H2SO4(aq) to balance the following chemical equation: Mg(s)…

A: • The given unbalanced chemical equation is,    Mg(s) + H2SO4(aq) →…

Q: 7. Fe + Cu(NO3)2 (aq) Molecular equation: Total ionic: Net ionic:

A: Iron (Fe) on reaction with copper nitrate CuNO32 gives ferric nitrate FeNO33 and copper. The…

Q: 28. What is the coefficient of H₂O when the following equation is properly balanced with smallest…

A: A balanced chemical equation is the one that contains the same count of different types of atoms on…

Q: How many molecules are in 1 mole of CóH1206?

A:

Q: How many total moles of ions are released when the following sample dissolves completely in water?…

A: Compounds which are made up of ions are called ionic compound. They are held together by…

Q: QUESTION 28 For a 8.73 g sample of ethanol (shown in the figure), what is the percent composition by…

A: Given, Chemical formula of ethanol= C2H5OH Molar mass of ethanol= 46.08 g/mol

Q: Given the following equation: 2 AGNO3 + CaCl2 --> 2 AgCI(s) + Ca(NO3)2 What is the net ionic…

A: 2 AgNO3 (aq) + CaCl2 (aq) ==> 2AgCl (s) + Ca(NO3)2 (aq)

Q: Write the correct chemical formula for 0.15 M barium iodide

A: A chemical formula is an expression which represents the elements in a compound and the relative…

Q: Quèstion 8 The number of valance electrons of Zinc(Zn30) is 2. 30 None of the above A Moving to…

A:

Q: Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs,…

A: Aqueous solutions of sodium carbonate reacts with calcium nitrate to form solution of sodium nitrate…

Q: Please solution to questions 3&4

A: Answer 3 :-  B option is correct. 2 NaCl Answer 4 :- C option is correct.  0.201g of Hydrogen

Q: Find the number of representative particles in each of the following:show complete solution pleasee…

A:

Q: (d) What is the molarity of MCIO3 in Solution A? 2. Use the identity of MCIO3 and the decomposition…

A: #1: #(d): The identity of the chlorate is KClO3 with a molar mass of 122.44 g/mol  Moles of KClO3 in…

Q: Question 3 W Students were asked to prepare a4 M solution of sodlum chlaride for a laboratory…

A: Molarity is one of the concentration term which is used to define the concentration of a solute in a…

Q: Part 3 28.4 mL of 0.403 M (NH4)2CO3 mol NH4*: O 11.4 0.0228 O 11400 O 0.0114

A:

Q: For the following combustion reaction, what is the coefficient needed in front of hydrogen to…

A:

Q: How many hydrogen atoms are in 0.1488 g of phosphoric acid , H,PO,? STARTING AMOUNT ADD FACTOR…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: _NaHCO,(aq) + _HCI(aq) → _H,CO3(aq) + _ NaCl(aq) H,CO;(aq) + _ NaCl(aq) Type your answers in all of…

A: In Balanced chemical equation number of atoms of each species are equal on both reactent and…

Q: 4.53 g sample of a laboratory solution contains 1.69 g of acid. What is the concentration of the…

A:

Q: How many moles is each of the following? show complete solution pleaseee 15.5 g SiO2 0.0688 g AgCl…

A:

Q: A neutralization reaction between an acid and iron(II) hydroxide formed water and the salt named…

A: Neutralisation reactions are those reactions in which an acid reacts with base to form salt and…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.