3 Calculate the percent composition by: C,H13NsO. mass of each element present in the compound.

Q: compound

A: The first step is to calculate the molar mass of KNO3. It can be calculated as follows: Molar mass=…

Q: What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance…

A:

Q: Describe how the knowledge of the percent compositionby mass of an unknown compound can help us…

A: Percent (%)composition by mass helps us in identification of the compound by comparing the relative…

Q: (a) Does the percent by mass of each element in a compounddepend on the amount of compound? Explain.…

A: a) In a molecule of calcium chloride, there is one calcium atom and two atoms of chlorine. The total…

Q: 7 Calculate the number of moles of OCI?

A: 1

Q: How many moles of propylene (C3H6) are in 25.0 g of the substance?

A: Molecular mass of propylene (C3 H6 ) = (3× 12.01) + ( 6× 1.01) = 42.09 g / mol.  Given mass of…

Q: How many formula units of MgBr, are in 18.91 g?

A:

Q: Calculate the percent composition by mass of cach element in AIKOH),. Use at least three significant…

A: Following are the atomic masses of the atoms in Al(OH)3: atomic mass:Al = 27 g/molO = 16 g/molH = 1…

Q: Determin the number of moles of compound within 0.25 g of glycine, CH;NO2

A: Given :- mass of glycine = 0.25 g  To calculate :- no. of moles of glycine

Q: How many moles of propylene (C3H6) are in 25.0 g of the substance

A: The compound given is C3H6. And mass of C3H6 given = 25.0 g Each molecule of C3H6 contains, 1) 3…

Q: What is the percent by mass of lithium in Li,O?

A: Percent by mass = (mass of Li/mass of Li2O) × 100%

Q: If a sample of barium hydroxide has a mass of 5.190 g, determine the number of moles of the compound…

A:

Q: How many grams of K2CrO4 are found in a sample containing 0.186 moles of this compound?

A:

Q: The formula for rust can be represented by Fe,O3. How many moles of Fe are present in 21.6 g of the…

A:

Q: Calculate the percent composition by mass of each element in Al(OH),. Use at least three significant…

A: The compound given is Al(OH)3  Assuming 1 mole of Al(OH)3  Molar mass of Al(OH)3 = Atomic mass of Al…

Q: 2. Determine the percent by mass of all elements in the compound C,H,CI.

A: Given compound = C4H9Cl standard molar masses C = 12 g/mol H = 1 g/mol Cl = 35.45 g/mol

Q: An antifungal molecule has a molar mass of 2448 g/mol.  a. How many moles are there in a 1.567g…

A: The given weight of sample is 1.567 g. The given molar mass is 2448 g/mol.

Q: 2) How many formula units are in 5.00 moles of CaSO,?

A: Solution:       Formula mass involves an addition of the masses of atoms present in the empirical…

Q: Define a scope of Convert between moles of a compound and moles of aconstituent element

A: The conversion factor between moles of a compound and moles of constituent element has to be…

Q: How many grams of K2CrOa are found in a sample containing 0.094 moles of this compound?

A: The no. of moles and weight of the compound are related as Moles = weight(in grams) / molecular…

Q: Calculate the number of grams in one mole of Ca Soy. 7 Hz0

A: Given  Number of mole of CaSO4.7H2O    = 1 mole  mass of CaSO4.7H2O                      = ?

Q: what is the percent composition of C in C3H8?

A: • Steps to calculate percent composition:- Find the molar mass of all the elements in the compound…

Q: A compound contains 6.0 g of carbon and 1.0 g ofhydrogen, and has a molar mass of 42.0 g/mol. What…

A: The empirical formula is the chemical formula of the simplest ratio of the number of atoms of each…

Q: thetr many years chloroform (CHCI3) was used as an inhalation anesthetic in spite of the fact the t…

A:

Q: how many moles of propylene (C3H6) are in 25 g of the substance?

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: How many moles of propane (C3H6) are in 25.0 g of the substance?

A:

Q: 56. I A compound is found to contain 15.94% boron and 84.06% fluorine by mass. What is the empirical…

A: Empirical formula of a compound is the simplest positive whole number ratio of atoms present in a…

Q: Calculate the molar mass of each compound. C,H, g/mol g/mol

A: Two numerical problems based on determining molar mass, which are to be accomplished.

Q: how many molecules are in 2.9 mol of c7h5n3o6

A: Given :- number of moles of C7H5N3O6 = 2.9 mol  To calculate :- number of molecules  1 mol = 6.022 ×…

Q: 8. Calculate the percent composition by mass of each element in xenon tetrafluoride and in…

A: Percent composition is defined as the amount of element present in hundred gram of the substance.…

Q: percentage of compound

A: According to the question, a solid compound has a mass of 52.20 g. For testing, we scrape the…

Q: How many molecules are contained in a pentanal (C5H10O) sample with a mass of 5.27 g?

A: 1 mole of any substance contains Avagadro number (6.023 *1023) of species. therefore, 1 mole of…

Q: Cinnamic alcohol is C9H10O. Calculate the percent composition by mass of C,H, and O in cinnamic…

A: Given :-  a) molecular formula of cinnamic alcohol = C9H10O  Mass of cinnamic alcohol = 0.942 g  To…

Q: What is the mass of 0.035 moles of acetic acid?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Calculate the percent composition by mass of each element in xenon tetraflouride and in…

A: Formula of xenon tetra flouride= XeF4   % composition of Xe=(1/5)*100…

Q: Calculate the mass in grams of moles of 9.191 *10^-6 1,2-dichloroethane, C2H4Cl2 .

A: Molar mass(MM) = 99  g/mol Moles = 9.191×10-6 mol Mass = moles × MM

Q: A sample of ethanol (C3H.OH) contains 4.2x102s hydrogen atoms. How many moles (n) of ethanol are in…

A: One mole of any substance contains 6.022×1023 particles.

Q: analysis shows the compound is composed only of 88.81% C and 11.19% H by mass. What is the molecular…

A:

Q: What is the percent composition by mass (to one decimal place) of Oxygen and hydrogen in 1 mol of…

A: The mass of 1 mol of atoms is called atomic mass For example :-  Atomic mass of H = 1.0 g/mol Atomic…

Q: Calculate the percentage composition for PNCI2 - (Enter your answer to four significant figures.)…

A: Solution: The percentage composition for PNCl2 are as follows --- The molar mass of phosphorus (P) =…

Q: Tin (Sn) exists in Earth's crust as SnO,. Calculate the percent composition by mass of Sn and O in…

A: Percentage of elements = (molar mass of element/Total molar mass of elements) *100 for eg: in NH3…

Q: moles of N are in 0.171 g of N0? How many mol N

A: According to the questions,Mass of N2O = 0.171 gMolar mass of N2O = 44.013 g/molAs per the mole…

Q: b.How many moles of dinitrogen tetrafluoride are present in 3.16x 10^22 molecules of this compound?…

A: Number of moles= 5.45×10-2 moles

Q: The percent by mass of chromium(II) in CrO is __________________ %

A:

Q: Caroline knows the amount of a compound in moles. To find the number of molecules in the given…

A: it was known, the amount of a compound in moles.

Q: C. A compound has been found to contain 38.8% K, 29.4% Mn by mass. The remainder of the compound is…

A:

Q: Anabolic steroids are performance enhancement drugs whose use has been banned from most major…

A: Calculate the molar mass of fluoxymesterone (C20H29FO3),      20(12.01) + 29(1.01) + 1 (19.00) + 3…

Q: Calculate the mass percent composition of carbon in CH4. Please explain and answer this!! Thank you…

A: • Mass Percent of Y = Mass of YTotal mass x 100

Q: Calculate the moles in 22.3 mg of nitrogen dioxide

A: The number of moles is a ratio of the mass of a substance to the molar mass of the substance.…

Q: The percent by mass of bromine in SiCl2Br2 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.