An unknown compound is said to have 67.6% mercury, 10.8% sulfur and 21.6% oxygen. Calculate its empirical formula. atomic masses: mercury - 200.59 g/mole sulfur - 32.06 g/mole oxygen - 16.00 g/mole Write the classical name of the compound formed in the previous item

Q: 5. Complete the following table: Compound Empirical Formula Molecular Formula P,O10 C,H120

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Q: Vhich molecular formula is also an empirical formula? O H202 O C6H1206 C2H4 PCI3

A: It’s explained below:

Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…

A: Ar : Mass of Ar = moles x molar mass                   = 4.5 x 10-4 x 40                   = 1.80 x…

Q: 31. Molybdenum(IV) carbonate

A:

Q: A sample of copper (II) nitrate hydrate has a mass of 1.278 g. The sample is heated until all water…

A: Given , mass of copper (II) nitrate hydrate= 1.278 g        mass of anhydrous copper (II) nitrate  =…

Q: 47: Determine the number of moles of molecules (or formula units) in each sample. 38.2 g sodium…

A: Answer 47 :- In this question we have to find out number of moles in each sample . Number of moles…

Q: Example How many molecules of O, are present in 6.25 moles? (why is this a molecule and not an…

A:

Q: The empirical formula of a group of elements is:      a. The simplest whole number ratio of atoms…

A: Empirical formula of any compound is defined as the simplest whole number ratio of atoms present in…

Q: 1.) Calculate the molar mass of each compound. Keep at least one decimal place in atomic masses from…

A: Calculation the molar mass of given compounds Molar mass means that mass of one mole of substance…

Q: Determine the chemical formula of each compound andrefer to the formula to calculate the mass…

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

Q: From the given empirical formula and molar mass, find the molecular formula of each compound. a.…

A: From the given empirical formula and molar mass, find the molecular formula of each compound. a.…

Q: How many ug arsine present in a sample contains 6.2 parts per billion arsine, if the weight of the…

A: Parts per billion (ppb) :-  The number of parts by weight of solute present in billion (109) parts…

Q: 1. How many moles are present in 24.0 grams of Sb,S,? a. 1.31x10 mol b. 1.56x10 mol c. 5.94x10 mol…

A: (1) Number of moles of Sb2S5 can be determined by using the formula given below as: Moles of…

Q: Determine the molecular formula for a compound consisting of 95.21% carbon and 4.79% hydrogen with a…

A:

Q: hich of the following is closest to having exactly one mole of oxygen atoms?   a) 42 g HNO3 b) 32…

A: a. 42 g HNO3 1 mole HNO3 contains = 3 moles of oxygen atoms moles of HNO3 = given mass/molar mass =…

Q: Nitrogen monoxide (NO) is a bioactive molecule in blood. Low NO concentrations cause respiratory…

A: To find: The mass percent of NO in each medicine

Q: From the given empirical formula and molar mass, find the molecular formula of each compound.a.…

A: The empirical formula mass and the molecular formula mass can be related as follows:

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: The elements present in the compound are given as Be, S and O. Hence we can assume that the…

Q: Zinc phosphate is used as a dental cement. A 50.00-mg sample is broken down into its constituent…

A:

Q: Determine the chemical formula of each compound and then use it to calculate the mass percent…

A: a.

Q: Determine the empirical formula of a compound containing 60.3% magnesium and 39.7% oxygen. Mgo O…

A: Answer :   A) MgO Consider ,  100 g of the sample containing Mg and O  % of Mg =60.3 g and % of O =…

Q: 7. Complete the following table. Mass Number of Number of Molecules or Number of Atoms Substance (g)…

A: As you not specified so I am giving answer of first 3 questions  Use there formula to get the…

Q: Molybdenum can form a wide series of halide compounds, including four different fluoride compounds.…

A:

Q: What is the mass of magnesium (24.305 g/mol) present in 0.3621 g Mg3N2 (100.949 g/mol)? 0.1744 g…

A: Given that:  Mass of Mg3N2 = 0.3621g  Molar mass of Mg3N2 = 100.949 g/mol Moles of Mg3N2 = given…

Q: How many molecules are in sample? 389 g CBr4

A: Given information,          Mass of CBr4 is 389 g

Q: Calculate the number of moles in 2,792.4 mg of Ca(NO3)2. Calculate the number of molecules.…

A:

Q: Determine the number of moles of oxygen atoms in each sample.a. 4.88 mol H2O2 b. 2.15 mol N2Oc.…

A: The mole is defined as the unit of measurement for the amount of substance that can be expressed in…

Q: Complete the table below for calculating the molar mass of the ionic compound manganese(II) sulfide.…

A: Molar mass is the mass of a sample of a compound divided by the amount of substance in that sample…

Q: The analysis of a salt shows that it contains 56.58% potassium (K); 8.68% carbon (C) and 34.73%…

A: Given: Mass percent of K = 56.58 %. Mass percent of C = 8.68 % And mass percent of O = 34.73 %

Q: An unknown compound is said to have 67.6% mercury, 10.8% sulfur and 21.6% oxygen. Calculate its…

A: In chemistry, the empirical formula of a chemical compound is the simplest positive integer ratio of…

Q: The compounds listed are found in many natural flavors and scents. Calculate the empirical formula…

A: The empirical formula for each of the following compounds can be calculated as :

Q: A compound is 43.7% phosphorus and 56.3% oxygen. Calculate the empirical formula of the compound

A:

Q: Which of the following is the correct definition of a mole A) the amount of a substance that…

A: Given  Which is correct = TO BE DETERMINED

Q: A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The…

A: Given: % composition of K = 44.90% % composition of H = 0.5787% % composition of P = 17.78%

Q: Determine the number of moles (of molecules or formula units) in sample. 55.98 g CF2Cl2

A:

Q: 79: Calculate the mass percent composition of nitrogen in each compound N20, NO, NO2, N;O5

A: Mass percentage or percentage by weight is one of the concentration terms that indicates the mass of…

Q: Help me please

A: Number of moles of sulphuric acid = 8.21 moles. Number of molecules of sulphuric acid = ?

Q: 17) An unknown hydrocarbon compound was analyzed for hydrogen by elemental analysis and results show…

A:

Q: An acid commonly used in the automotive industry is shown to be 31.6 % phosphorous, 1.1% hydrogen,…

A: Given: Phosphorous = 31.6% Hydrogen = 3.1% Oxygen = 63.5%

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Empirical formula is the simplest ratio of the elements present in the given molecular formula.…

Q: Consider the following Organic compound. Answer the following questions. a) Write the Empirical…

A:

Q: Calculate the mass percent composition of carbon in each carbon-containing compound.a. CH4 b. C2H6…

A:

Q: Determine the number of moles (of molecules or formula units) in each sample.a. 25.5 g NO2 b. 1.25…

A: Given samples,    a. 25.5 g NO2    b. 1.25 kg CO2    c. 38.2 g KNO3    d. 155.2 kg Na2SO4

Q: Sodium and nitrogen form two different binary compounds. The percentages in the two compounds are:…

A: a) Step 1: Conversion of mass % to grams. Assume the weight of the compound is 100 g. Thus, in 100 g…

Q: Calculate the number of moles of sulfur atoms present in each of the following samples. l…

A: Given  A)  2.01 gram of Na2SO4  Number of mole of sulphur atom = ? B) 2.01 gram of Na2SO3 Number of…

Q: i don't know where to start to try and figure these out.

A: The following values can be determined as,Platinum (Pt)

Q: Complete the table below for calculating the molar mass of the ionic compound copper(II) bromide.…

A: The molar mass of an ionic compound is the sum of the mass of the constituting ions present in 1 mol…

Q: empirical formula

A:

Q: 3. Write the appropriate chemical formulas for compounds with the following ratios of elements. 1…

A: The chemical formula of compound shows the number of elements present in it. The chemical formula…

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.