What percentage of atoms in the molecule represented in the following formula are nonmetals?           Ca3(PO4)2 To calculate a percent - you take the part divided by the whole and multiply by 100.  For example - if there are 12 students in the class, and 4 students are wearing long pants and 8 students are wearing short pants.  The % of people wearing long pants is = ( 8/12) * 100 a) 40% b) 75% c) 62% d) 77%

Q: When calcium carbide is placed in a beaker of water, the reaction produces an unknown hydrocarbon…

A: #(a): Given % C = 92.2% %H = 7.8%

Q: The percentage of water in F e Cl3 dot 5H2O is: 38.70% 35.7% 37.2 % 38.4 % Question 6

A: Mass percentage is defined as quantity of substance present in 100 g of the compound. It is a method…

Q: A model of the butanal molecule is shown in the window below. ball & stick + labels ited a. How many…

A: From the model, Butanal=> CH3>CH2CH2CHOMolecular formula of butanal is C4H8O. Mole is the SI…

Q: anesthetic used to treat a range of conditions such as sunburn, bites, stings and a range of rashes.…

A: Molecular form of Benzocaine is C9H11NO2  Avogadro’s number 1 mole = 6.022×1023 particles

Q: Calculate the empirical formula of each substance from their spectrograms. 1) Co = 0.672 g, As…

A: Empirical formula can be calculated by - (A) Take % of different atoms. (B) devide % by Atomic mass.…

Q: A lab analysis of an organic compound showed it is made up of 60.00% C, 5.75% H, and 34.25% O. If…

A: Given, C = 60.00 %  H = 5.75 %  O = 34.25 %  Molecular mass = 560.56 g/mol

Q: Mole 1. How many significant figures are in the number 0.0840900? 2. Write the following number in…

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

Q: Caffeine, a molecule found in coffee, tea, and certain soft drinks, contains C, H, O, and N.…

A: Given, Mass of caffeine = 10.0 g Mass of CO2 = 18.13 g Mass of H2O = 4.639 g Mass of N2 = 2.885 g…

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Number of iron atom = 1 Mass percent of  Fe in the compound = 0.330 %

Q: Calculate the empirical formula of each substance from their spectrograms. 2) naproxen ( The drug:…

A: Given : Naproxen molecule which contains only H, C and O. Mass percent of C = 73.03 % Mass percent…

Q: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

A:

Q: Dimethyl sulfoxide (DMSO) is a liniment for horses and has been used in the treatment of arthritis…

A:

Q: a) What is the mass of 2.450 x 10²⁴ atoms of tungsten (# 74)? (Be sure to write your units, chemical…

A: The solution is shown in the image below-

Q: - Why do we use the "mole" in chemistry. How does it relate to the periodic table? a) What is the…

A: The relationship between mole and mass is as follows:       Mole = Mass Molar mass ⇒Mass =…

Q: Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. How many molecules of C₆H₈O₆ does a Vitamin C…

A:

Q: mass

A:

Q: Given the following mixture of two compounds 60.00 g of X (MW =63.00 g/mol)(density 1.047 g/mL) and…

A: Mass of X = 60 gm Volume of Y = 680 ml

Q: What is the mass, in grams, of 7.80×1020 molecules of caffeine, C8H10 N4O2? xpress your answer using…

A:

Q: A definiency in thhe vitamin nicotinamide results in the dietary deficiency disease pellagra,…

A: Given, the molecular formula for nicotinamide is C6N2H6O. We have to find the percent composition by…

Q: How many moles of atoms are in 5.00 g of ¹3C?

A: Mole can be define as the ratio of weight of substance taken divided by molecular weight of that…

Q: cond A B C D sketch of molecules in it H H C1O H-Ö C нӧ- H H :O: H H H-Ö H-Ö C H C || :0: C O: 010…

A: first, we have to find empirical formula of the given compounds

Q: 2) Methanol (CH3OH) is a single-carbon alcohol that is commonly known as wood alcohol, because it…

A: A mole of an element or compound has Avogadro number of atoms or molecules in it. Each element or…

Q: The formula of glucose is C6 H12 O6. a. The number of molecules in 166 grams of glucose would be…

A:

Q: O empirical formula O molecular formula reactants

A: A chemical formula in which the subscript represent the simplest whole number ratio of the atoms or…

Q: 3. Consider a 100.0 g sample of methanol (CH:OH). Show your work for each of the calculations below…

A: Given the mass of methanol(CH3OH) sample = 100.0 g Molar mass of methanol = 32.04 g/mol  Moles of…

Q: Polyethylene is a hydrocarbon polymer used to produce food -storage bags and many other flexible…

A: The mass of polyethylene combusted is 1.26 g,The mass of CO2 produced is 3.94 g,The mass of H2O…

Q: Now that we have put coefficients of 3 in front of CaSO4 and CaCl2, what coefficient should go in…

A: 3CaSO4 +  ? AlCl3 --->  3CaCl2 + Al2 (SO4)3Here we have to determine the coefficient of AlCl3…

Q: Find the number of formula units of CaCI 2 in a 1.5 kg pail of calcium chloride (used to melt…

A: We have to calculate the number of formula units of 1.5 kg CaCl2

Q: Hubei China, Ten hospitals were used to do a trial for Remdesivir drugs. Patients age 18 and above…

A: 1 mole = 6.022×1023 [ Avogadro's number ]  The mass of 1 mole of atoms of an element is called…

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.