How many mg of magnesium chloride are needed to supply 2.2 MEQ of positive ions (mg+2)  1 mol + charge = 1000 meQ mg+2 1 mol magnesium chloride = 95 grams magnesium chloride

Q: If 7.24 g of Na2CO3 is dissolved in enough water to make 250. mL of solution, what is the molar…

A: Recall the data, mass of Na2CO3=7.24 g Molar mass=105.9888 g mol-1 Volume of the solution=250.…

Q: The density of water of a lake is 1.25 g mL-1 and one kg of this water contains 92 g of Na+ ions.…

A:

Q: For the equation below, if you want 35 mL of H2S2 (1.334 g/mL), what mass of 2.4 % LiCN solution…

A: A solution is prepared by adding solute to a particular solvent.  Concentration is the amount of…

Q: xn A Part A: Balanced Chemical Equations (must include physical states) Balanced Total Equation…

A:

Q: White limestones contains a large percentage of calcium carbonate, CaCO, What is the mass in grams…

A: The relation between mole and mass of any substance is given by - Mole = Mass/molar mass

Q: What is the molarity of a solution made by dissolving 37.2 g Fe(NO3)3 in enough water to make 200.0…

A: As you not specified so I am giving answer of 1 question Given mass =37.2gm Molarity mass= 242g/mol…

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the…

A: -> For Oxidation state consider the oxidation state of unknown element is x then add oxidation…

Q: Cu   +   8HNO3  --> 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of water…

A: Given  Mass of HNO3 = 197.1 g Number of moles of water = ?

Q: Complete this equation: HCl(AQ) +  NaOH(AQ) ➡ Write this equation as unionized; total ionic; net…

A: Ionic equation is an equation in which ions are explicitly shown. Net ionic equation is the chemical…

Q: Calculate the molarity of 5.50 grams of Compound XY (molar mass= 75.0 g/mol) dissolved in 1.50 L…

A: Given, amount of a compound =5.50 grammolar mass of compound =75.0 gmolvolume of solution =1.50 Lwe…

Q: a)How many moles of acetic acid are in 100 mL of vinegar? What is the molarity of acetic acid in…

A: Given:Mass of acetic acid= 5g Volume of solution =100 mL

Q: Balanced Chemical equation: HCI + NaOH -> Balanced ionic equation: Balanced net ionic equation:…

A: Given : reactants

Q: Separate the following balanced chemical equation into its total ionic equation. AgNO3(aq) +…

A: Recall the given reaction,                                        we have to write the total ionic…

Q: Calcium chloride (CaCl2) has a formula mass of 110.98 g/mol.  a) What is the molarity of CaCl2 in…

A: Note: Since you have asked multiple subparts question, we will solve the first three subparts. And…

Q: Consider the reaction: 2 KCIO3 (s) → 2 KCI (s) + 3 O2 (g) How many electrons does an atom of…

A: Applying concept of oxidation state change due to electron  .

Q: A student wants to prepare 1.00 L of a 1.00-M solution of NaOH (molar mass = 40.00 g/mol). If solid…

A: 1) Mass of NaOH = m MOlar mass of NaOH = 40 g/mol The volume of NaOH solution = 1.00 L Molarity of…

Q: 3KOH+H3PO4⟶K3PO4+3H2O what mass of phosphoric acid in grams is needed to produce 2.15 mol of water?

A:

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O   In the above equation how many moles of water can be…

A: Given- Reaction-3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O Mass of HNO3 = 138.6 grams To find- Number…

Q: How many moles of acid and base are needed to produce 2.50 moles in the following equation. 3…

A:

Q: An aqueous solution of ethylene glycol, C₂H6O2, is prepared by dissolving 18.42 g of C₂H6O2 (solute)…

A:

Q: What volume in liters of 2.00 M H2C2O4 contains 0.650 g H2C2O4?

A: Molarity is the moles of a solute present per liter of the solution. Molarity = moles of solute /…

Q: Balance the following chemical equation (if necessary): Cl(aq) + Pb2+ (aq) = PbCl₂ (s)

A: A chemical equation is said to be balanced if atoms of different elements are same in number on…

Q: What is the product of the net ionic equation, given the following balanced molecular equation?…

A: The process which involves the change of one kind of chemical substances to the other chemical…

Q: Ca(OH)2 + Na2CO3 > 2NaOH + CaCO3 50g of calcium hydroxide and 50g of sodium carbonate are reacted.…

A: For a compete reaction, moles/ stoichiometric coefficient of each reactant and products are equal to…

Q: Fe(no3)3 (aq)+3NaOH(aq) Fe(OH)3(s)+ 3NaNo3(aq) how many moles of NaOH would be required to produce…

A: Mole of Fe(OH)3 produced= 0.40

Q: A chemist adds 2.00 L of a 5.9 × 10M mercury(II) iodide (HgI₂) solution to a reaction flask.…

A:

Q: 3 Cu   +   8HNO3  --> 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of…

A:

Q: f 23.1 g of NaOH (MM = 40.00 g/mol) are added to a 500.0 mL volumetric flask, and water is added to…

A: Given data mass of NaOH = 23.1 g Molar mass of NaOH = 40.00 g Volume of the solution =  500.0 mL The…

Q: A solution is made by dissolving 19.4 g of barium chloride, BaCl2, in enough water to make exactly…

A: The given volume of solution is 500 mL. It is known that, 1 mL = 0.001 L. Therefore, 500 mL = 0.5 L…

Q: The following is a formula for the preparation of a suppository for the treatment of migraine…

A: Given data,Number of suppositories=175Mass of Ergotamine tartrate=2mgMass of Caffeine=100mgMass of…

Q: An astronaut excretes about 2500 g of water a day. if lithium oxide (Li2O) is used in the spaceship…

A: The reactant getting consumed or the product getting formed in reactions are inter-related with each…

Q: 100 90 80 NANO3 70 60 CaCl2 50 Pb(NO3)2 40 KCI NaCl 30 20 KCIO3 10 10 20 30 40 50 60 70 80 90 100…

A: Given information, The solubility of potassium nitrate at 20 °C is 37 g per 100 g of water. Volume…

Q: What is the molarity of a solution that is 48.4% by mass phosphoric acid (H3PO4) and that has a…

A: Given, 48.4% by mass phosphoric acid Density =1.155 g/mL Molecular weight of phosphoric acid = 97.99…

Q: Calcium hypochlorite [Ca(OCI)2l is an effective disinfectant for clothing and bedding. If a solution…

A: From given With the given mass and its molar mass , molarity is calculated as follows

Q: At 20°C, acetaminophen has a solubility of about 1.5 g/100 mL in water. If you recrystallize 5.00g…

A: Given: Solubility of acetaminophen in water = 1.5 g/100 mL of water = 0.015 g/mL of water. Mass of…

Q: Iron metal is reacted with hydrochloric acid to yield iron(II) chloride and hydrogen gas. A student…

A: Percent yiel id defined as the percent ratio of the actual yield(experimental yield) of the reaction…

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.