80 g LiCl in 100 g H2O

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given -> CaCO3(s) -----> CaO(s) + CO2(g)  Weight of sample = 2.237 gm  Weight of CO2 formed =…

Q: 2. A mixture of Na2SO4 and its hydrate Na,SO4-10H2O has a mass of 1.5099 g. After heating to drive…

A: Mass percent :- The mass of a component present in 100 grams of a mixture is known as mass…

Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: 27. Aluminum reacts with oxygen gas to form aluminum oxide, as shown in the reaction below. 4Al(s) +…

A: 4 Al (s) + 3 O2(g) → 2Al2O3(s) This is the balanced chemical equation. We know that , Reactants are…

Q: An aqueous solution known as Ringer's lactate is administered intravenously to trauma victims…

A:

Q: Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and…

A: Given reaction: C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 We have to find the theoretical yield of aspirin…

Q: balance the following chemical equation  C3H6 (g) + O2 (g) ----->  CO2 (g) + H2O (g)

A: Balance the following chemical equation  C3H6 (g) + O2 (g) →  CO2 (g) + H2O (g)

Q: Part A Elemental phosphorus reacts with chlorine gas according to the equation Once the reaction has…

A:

Q: Psoralen, a compound found in giant hogweed, contains only C, H, and O. Combustion of 1.000 g of…

A:

Q: Each 100 ml of an antacid contains 3.7 g of aluminum hydroxide (Al (OH) 3), 11.66 g of magnesium…

A: To determine moles of any substance present  we use following formula    moles = massmolar mass

Q: a student finds that they have 0.2929 g of NH4Cl, 0.6234 g of NaCl, and 1.3841 g of SiO2. Calculate…

A: Given Mass of NH4Cl =0.2929 g Mass of NaCl =0.6234 g Mass of  SiO2 = 1.3841g Initial mass of mixture…

Q: FeSO4   +   Potassium phosphate  à  Iron (II) phosphate  +  K2SO4 Identify the spectator ions

A:

Q: 32. Consider the following reaction P4(s) + 6 F2(g) 4 PF3(g) n a laboratory experiment, 100. g of F2…

A: Given, Balanced reaction P4(s)+6F2(g)→4PF3(g) mass of F2=100.0 g mass of P4=60.0 g

Q: A sunscreen preparation contains 2.50% by mass benzyl salicylate (2.50g benzyl salicylate/100g…

A: Given : weight of benzyl salicylate = 2.50 g in 100 g sunscreen  And one tube contains 4 ounces of…

Q: You wish to prepare 205 grams of 14.3 % MgSsO4- You will need grams of magnesium sulfate and mL of…

A: Given that, % of MgSO4 = 14.3%  ,  Total mass = 205 gms Also, % of MgSO4 = Mass of MgSO4Total…

Q: Aspirin can be prepared from salicylic acid ( C7H6O3 ), which has a molar mass of 138.12 g/mol, and…

A:

Q: A mixture of Na2SO4 and its hydrate Na2SO4•10H2O has a mass of 1.5099 g. After heating to drive off…

A: Weight % = 100 x Mass of substance/Mass of mixture Number of mols = mass/molar mass Mass of mixture…

Q: There are 1.18 × 10^24 carbon atoms in_____grams of glucose (CH12O6, 180.16g/mol)?

A: Given,  number of carbon atoms = 1.18 x 1024 atoms We know, => moles of carbon = number of carbon…

Q: Jennifer was a pre-pharmacy student and enrolled in general chemistry laboratory. One day the lab…

A: Here we are required to find the unknown hydrated salt .

Q: A 4.98 g quantity of solid rubidium metal is combined with 3.44 g of magnesium chloride crystals…

A: The reaction is given as: 2Rb(s)+MgCl2(s)→Mg(s)+2RbCl(s) The mass of rubidium = 4.98 g The molar…

Q: QUESTION 6 Convert 2.09 moles NaOH to grams. 174 grams NaOH 83.6 grams NaOH 2. grams NaOH 0.0523…

A: 6. Given;

Q: What mass of Carbon Dioxide forms when 52.30 g of Sucrose reacts with 74.1 g of Oxygen? C1,H„O +…

A: We have to calculate the mass of carbon dioxide formed.

Q: For the following questions (Q1-Q4), consider the compound CoCl2 • 6H2O (cobalt (II) chloride…

A: Given data: Mass of CoCl2 • 6H2O = 2.51 g We know that, Molar mass of Co = 58.933 g/mol Molar mass…

Q: For the following reaction, 11.2 grams of glucose (C6H12O6) are allowed to react with 15.5 grams of…

A: First we need to find the limiting reactant. It is the reactant that gets consumed first.   To find…

Q: Methyl salicylate (C₂H8O3) (density = 1.18 g/mL) is dissolved in 100 mL of 6.0 M NaOH, and heated…

A: Theoretical is defined as the maximum amount of the product that can be formed in a given chemical…

Q: Vitamin C, an antioxidant present in citrus fruits, contains only C, H, and O. Combustion of 10.0 g…

A:

Q: Which of the following is the correct set up to solve for how many grams of oxygen are needed to…

A: Given :- mass of butane = 16.4 g  To calculate :- mass of O2 required  number of moles = mass/molar…

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and…

A:

Q: A 4-M sample of hydrochloric acid, HCl, has a density of 1.42 g/ml. What is the mass % (wt/wt) of…

A:

Q: How many sodium ions are present in 20.0 mL of 0.10 M Na,S? A. 0.002 В. О.004 С. 1.20 х 1021 D. 2.41…

A: Given  Volume = 20 mL               = 20 × 10-3 Liter           ( 1 mL = 10-3  Liter )…

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.