(d) 0.372 g of histamine, C.H.N, in 125 g of chloroform, CHCI,

Q: (a) In the certain hydrated salt MSO3-4H2O, the mass percentage of H2O is 44.71%. Identify the…

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

Q: Calculate the theoretical mass %% of CC and HH in propenoic acid.

A:

Q: An empty erlenmeyer flask weighs 241.3 g. when filled with water (density - 0.997 g/mol), the flash…

A: Given: Mass of empty Erlenmeyer flask = 241.3 g. Mass of Erlenmeyer flask with water = 489.1 g. And…

Q: What is the number of grams in 5.6x10^-9 molecules of diiodine dichloride?

A: Diiodine dichloride Formula : I2Cl2  Molecules = 5.6 x 10-9 .  Grams = ?

Q: 3. In a chemical atomic mass determination, the tin content of 3.7692 g of SnCl, was found to be…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: b) In a second experiment to verify the value of x, the pharmacist heated a 3.752g sample of the…

A: Given, mass of sample of lysine hydrate =3.752 g mass of sample after heating =  3.278 g

Q: 1) How many mnoles are there in 24.5 grams of CoF,?

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

Q: In the air we breathe at 74.0 ∘F∘F and 1.09 atmatm pressure, how many molecules does a typical cubic…

A:

Q: What is the mass of calcium in grams in 9.07 g of calcium hypochlorite?

A: 9.07 g of Calcium hypochlorite is taken.

Q: 5. A 2.000 g sample of CoCl2·xH2O is dried in an oven. When the anhydrous salt is removed from the…

A: By calculating moles of CoCl2 and H2O we can find value of x.

Q: 2.845 multiplied by 10E12 potassium ions equals how many moles in potassium ions

A:

Q: Chemical analysis shows that the oxygen-carryingprotein hemoglobin is 0.34 percent Fe by mass. What…

A: Heamoglobin is a protien for oxygen transport . The heam group in Hb is Fe metal. Binding of oxygen…

Q: how many moles of phenylmethanal are there if there are 7.08x10^23 molecules of phenylmethanal?

A: We have to calculate the moles of phenylmethanal.

Q: Given that I-127 is the only natural isotope of iodine, what is the mass of one I atom and…

A: Given :  Given that I-127 is the only natural isotope of iodine, what is the mass of one I atom…

Q: 1. How many molecules of aspirin C,H804 if there are 0.360 g of it?

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

Q: A compound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen…

A: Given that the sample contain 88.14% carbon and 11.86% hydrogen by mass.That means in 100 g sample…

Q: A 10.61 gram sample of a certain hydrate of copper (II) sulfate, is heated until all the water is…

A: The question is best on experimental technique of determination of molecular formula of the hydrate.…

Q: The molar mass of caffeine is 194.19 g. Is the molecularformula of caffeine C4H5N2O or C8H10N4O2?

A: Caffeine is a natural stimulant most commonly found in tea, coffee and cacao plants. It works by…

Q: 3. How many lb mol of NaNO3 are there in 100 lb?

A:

Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A: w/w % =( mass of solute(g)/mass of solution(g))*100

Q: A 2.00 g sample of methamphetamine was found to contain 1.61gC, 0.203gH and 0.188 g N. What is its…

A: Given : Mass of C = 1.61 g Mass of H = 0.203 g Mass of N = 0.188 g Assuming the empirical formula of…

Q: The Jensity of water at 25°C is 1.00 grmL. what is the mass in groms of IS.3Loł waten? IS

A: mass is product of volume and density.

Q: When iridium-192 is used to treat cancer, a small cylindrical piece of 192Ir, a 0.6 mm in diameter…

A: Given,

Q: Assume that the ratio of moles of Cl to moles of Cu are 2.7.  If we can represent the formula by…

A:

Q: What is the mass, in kilograms, of an Avogadro’s number ofpeople, if the average mass of a person is…

A: The average mass of person is 160 lb. One pound is equal to 0.4535 kilograms.

Q: Commercial solvents are commonly sold in 55-gallon drums. What is the weight in pound of the carbon…

A: Volume of the solvent = 55 gallon Volume of solvent in cc = 208198 cm3 (since 1 gallon = 3785.41…

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate, Na2PO3F, in 100 mL. How…

A: Molecular weight of sodium monofluorophosphate, Na2PO3F = 143.95 gm/mol  Moles = weight/mol. wt. =…

Q: For the compound Glucose ( C6H12O6 ), What is the percent Oxygen in glucose?

A: We need to find the amount of oxygen present in glucose. We will calculate the given problem by…

Q: C,H, + 50, - 4H,O + How many moles of C,H, are in 5.3 x 102 moles of CO,?

A: given :- C3H8 + 5O2 → 4H2O + 3CO2  number of moles of CO2 = 5.3 × 1012 mol  To calculate :- number…

Q: Which is the correct mass percentage of hydrogen in acetamide, C₂H₅NO?

A:

Q: During an experiment you extract 112 mg of caffeine from a 16g sample of coffee. What is the mass…

A: A) Given: The mass of caffeine in coffee = 112 mg = 0.112 g ( Since 1 mg = 0.001 g) The mass of…

Q: Cocaine (C₁₇H₂₁O₄N) is a natural substance found in cocaleaves, which have been used for centuries…

A: For part a), use the given solubility of the salt to find the mass that is soluble in the given…

Q: What is the mass percentage of O in C3H,O,?

A: The mass percentage of an element is a one of the way to express the amount of element in the…

Q: 50 cm3 of a gaseous hydride of phosphorus, PHn reacts with exactly 150 cm3      of chlorine, Cl2 to…

A: Given,  Volume of gaseous hydride of phosphorus (PHn) = 50 cm3  Volume of Cl2 = 150 cm3  Volume of…

Q: The ratio by mass of carbon to hydrogen in 100 g of a certain compound is 6 to 1. What will be the…

A: Given information: Mass of a certain compound = 100 g Ratio of mass of carbon to hydrogen = 6 : 1…

Q: The molecular formula for glucos is  C6H12O6 and BENZENE HAVE C6H6. What are their respective…

A: The empirical formula of a compound is called the simplest formula. It represents the relative or…

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL. What mass…

A: Given, mass of sodium monofluorophosphate (Na2PO3F) in 100 mL = 0.76 g  Now, molar mass of Na2PO3F =…

Q: Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. What quantity in molecules of C₆H₈O₆ does a…

A: To find molecules of vitamin C, first convert mass in grams then divide it by molar mass to get its…

Q: What is the mass in milligram of a. 0.888 mol of H,SO,?

A: Given :-  Number of moles of H2SO4 = 0.888 mol   To calculate:-  Mass of H2SO4  Mass = number of…

Q: 14. The fertilizer ammonium sulfate [(NH,),So,] is prepared by the reaction between ammonia (NH3)…

A:

Q: What is the mass of a single molecule of sugar (C6H1206) in grams?

A: Given - 1 molecule of sugar C6H12O6 Avogadro's number  = 6.022 x 1023 molar mass of C6H12O6 =…

Q: In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant…

A: GivenMass of hydrated salt = 34.8243gMass of anhydrous salt = 27.0351gMass of water lost = 7.7892g

Q: What is the molecular mass of chloroform if 0.0275 mol weighs 3.28 g?

A: Given: Number of moles = 0.0275 mol mass of chloroform=3.28g To find: The molecular mass of the…

Q: How many ,mew mg are there in 1 mg?

A: The units of measurement of the weight of any compound can be given in grams (g) or milligrams (mg).

Q: Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of…

A:

Q: 2) How many grams of calcium chloride contains 4.08 x1024 ions of Cl?

A: Given that:  Ions of Cl- = 4.08×1024 Formula of calcium chloride = CaCl2

Q: Mass = 1kg, Speed = 2m/s. KE = ?

A:

Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A:

Q: B. How many number Na* ions in 3 g of Na3PO4?

A: Given, The mass of Na3PO4 = 3g Note: one mole (molar mass ) of any substance contains Avogadro…

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.