A student determines the molar mass of a compound to be 145g/mol. If the theoretical value is 162g/mol. What is the percent error?

Q: Very large numbers should be entered in exponential notation. Any numbers obtained from the periodic…

A: Magnesium phosphate Sodium chlorate Silver Cyanide Cadmium sulfide Strontium Chlorite

Q: How many molecules of amoxicillin (C16H19N305S, molar mass 365.4 g/mol) are contained in a 440-mg ig…

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Q: How many moles of NaCl are present in 100 g?

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Q: Determination of a chemical formula, mass of crucible is 14.9234g, crucible + hydrated sample is…

A: Given  Mass of Crucible = 14.9234  Mass of hydrated sample = 1.6618 gram Mass of crucible + Mass of…

Q: The molar mass of a compound was determined to be 23.99 g/mol. If the sample contains 3.2 mol, then…

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Q: A 12.35 g sample of aluminum hydroxide contains how many mol of hydroxide ions?

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Q: 0.445 g of iodine to moles

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Q: Calculate the mass (in g) of sample. 1 water molecule

A: Given, 1 water molecule

Q: How many grams of ethanol C2H6O are in a 3.0 mole sample?

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Q: number should be placed in front of CaSO4 to give the same total number of sulfate

A: The number should be placed in front of CaSO4 to give the same total number of sulfate ions on each…

Q: Mass --> Moles 1. What is the mass of 3 moles of potassium nitrate? 0 75 moles of aluminum oxide?

A: Since you've posted multiple questions, we'll solve only the first question for you. If you want any…

Q: Using the moles of zinc and I− that reacted, compute the number of iodides per zinc ion in zinc…

A: Zinc ions combines with iodide ions to form zinc iodide which is a white powder.

Q: Find the percentage oxygen by weight in KMnO4.

A: Percentage by mass – Formula is, This is formula for liquids. But for certain element present in a…

Q: How would the following errors affect the empirical formula for the compound? That is, will these…

A: In the given experiment the student ran out of time and didn't heat mixture second time.

Q: Determine the mass, in grams, of 0.445 moles of Mn (1 mol of Mn has a mass of 54.94 g). with the…

A: The amount of moles in a substance can be determined by using its Molar mass. The molar mass is the…

Q: How many atoms of Pb are present in 254 grams Pb?

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: Convert 29.5 g of ammonia to the amount in moles.

A: Convert 29.5 g of ammonia to the amount in moles.

Q: What is the number of mole for 4.3 g of CH4? please only type the answer without the unit Answer:

A:

Q: 5.000 gram sample of hydrated beryllium carbonate, BeCO3·xH2O is heated according to the procedure…

A: To calculate the number of moles of H2O and BeCO3.

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

A: Given: Mass of C6H8O6 = 1025 mg Or mass of C6H8O6 = 1025 ×10-3 g And we know that the molar mass of…

Q: What is the molar mass of C7H1004? Express your answer in units of grams per mole. Provide your…

A: Given  Formula of compound = C7H10O4 Molar mass = ?

Q: The true value of a compound’s molar mass is 176.082 g/mol. You do an experiment and determine the…

A: Given that, The true value of a compound’s molar mass is 176.082 g/mol and the calculated molar mass…

Q: The weight of grams for 4 moles of Br

A: We know, Number of moles = Mass /Molar MassThus,

Q: What is the molar mass of unknown Q whose mass is 23.08g and .0389moles Hint Molar Mass = g/mol %3D

A: Given  Mass = 23.08 gram  Number of mole = 0.0389 mole  Molar mass = ?

Q: . The formula for ibuprofen is C3H1O2. How many moles of ibuprofen are present in 250.0-mg tablet?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: Which of the following is incorrect: Assay is the process of determining how much of a given sample…

A: We will choose the incorrect answer from the following statement.

Q: 13 mass of solute: Incorrec

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Q: What is the relationship between mass, moles, and molecular weights?

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Q: A sample of carbon tetrachloride has a mass of 51.6 grams how many moles are contained in the sample

A: Number of moles of a substance can be determined using its mass and molar mass using the equation…

Q: 3.00x10^31 molecule sample has how many moles?

A: We know that ; 1 mol of sample contains Avogadro's number of Molecules . (Avogadro's number = 6.022…

Q: en moles of hydrogen sulfide, H2S, would consist of how many molecules?

A: Solution :   Avogadro's number represents the number of molecules present in a unit of a mole of any…

Q: For an experiment, a student used 17.50 g sodium chloride.  How many moles of sodium chloride did…

A: Number of moles of any substance can be calculated by using the formula :               number of…

Q: Calculate the number of sodium atoms in each following samples: A. 1 mol sodium oxide B. 50g…

A: Given, three samples containing sodium as following,A) 1 mol sodium oxide  B) 50g sodium chlorideC)…

Q: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Mass of sample = 100 g Number of mole of carbon dioxide present in sample = 0.30 mol

Q: Barium chloride dihydrate mol g Sodium phosphate dodecahydrate mol lo easm moi) Barium phosphate mol

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: Define percentage by mass

A: Percentage by mass is defined as the ratio of mass of solute by mass of solution (solute+solvent)…

Q: What might be a reason you obtained a percent yield of less than/greater than 100% for the mixture

A: The formula used to calculate the percent yield is,If the obtained percentage yield is less than…

Q: looking for a small, whole-number ratio between the num bers of moles of the zinc and chlorine, we…

A: From given datas  With the mass % formula, both mass of platinum and chlorine is calculated as…

Q: Suppose you are performing an experiment in which you produce a solid and measure its mass. You run…

A: Solution:- Given Data => Trial number Mass of product 1 2.59 g 2 2.26 g 3 1.91 g 4…

Q: 4) 4.00 mole H,0 to grams 5) 815 grams Cal(OH), to mole

A: For 4) moles of H2O = 4.00mol   We know that, molar mass of H2O = 18gNow,mass of H2O = no of moles x…

Q: Convert to moles 10.0mL H2SO4 (96%, 1.84g/mL)

A: To find mole , we have mass of H2SO4. Mass can be find using the following data.   The solution is…

Q: Unknow A sample ( given density= 0.795 grams/mL) Volume:24.6mL #of moles in sample:0.31825 moles…

A: • Here, we have to calculate the mass , molar mass and number of molecules of sample. •Given that,…

Q: What is the difference between molarity, molar and grams?

A: The ratio of number of moles of solute to the volume of solution in liters is known as molarity. The…

Q: Molar mass is the relationship between ____________. A. grams and liters B. moles and grams…

A: Since molar mass is defined as mass of substance in grams in 1 mole of it.

Q: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Percentage composition of an element is calculated from its molecular mass. Percentage composition…

Q: A large organic molecule has a mass of 1.41 * 10-21 kg. What is the molar mass of this compound?

A: Given that, Mass of organic molecule= 1.41×10-21 kg Molar mass is given by the following formula…

Q: How many moles are in 28.4 grams of water?

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Q: Calculate the average molar mass of acetic acid based on your experimental results. Round your final…

A: Given: Concentration of acetic acid solution = 2.40 g/L   Trial-1 Trial-2 Initial buret reading…

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

A:

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.