Determining the formula of a hydrate: NOTE: Show all steps! A hydrate of magnesium sulfate has a mass of 13.52 g. This sample is heated until no water remains. The MgSO4 anhydrate has a mass of 6.60 g. Find the formula and name of the hydrate.

Q: How many moles of theobromine are there in 5.72 x 1026 molecules of theobromine?

A: 1 mole of substance has Avogadro's number that is 6.022x1023 molecules or atoms NA = 6.022*1023…

Q: The molecular mass of a compound of interest is 60 g/mol. The empirical formula of this compound is…

A: The molecular formula of the compound has to be determined.  In the question, it is provided that…

Q: 4. Identify these compounds as either ionic or molecular: i. NO₂ ii. MgCl₂ iii. CO₂ iv. K₂SO4 V.…

A: 4) Ionic compound is a compound formed by ions bonding together through electrostatic…

Q: Never heat the mixture until the distillation flask is dry as this may cause an explosion. O True O…

A:

Q: A hydrocarbon is used as a fuel. A 100.0-g hydrocarbon contains 25.2 g hydrogen. Find the empirical…

A: We have to predict the empirical formula for hydrocarbon

Q: The formula for sulfur hexafluoride is SF. a. How many molecules are in 6.61 grams of sulfur…

A:

Q: Sea water contains roughly 28.0 g of NaCl per 1.0 liters. What is the molarity of sodium chloride in…

A: Molarity is a unit of concentration which is defined as the number of moles of solute per unit…

Q: A 19.33 g sample of Mo, 0,(s) is converted completely to another molybdenum oxide by adding oxygen.…

A: Mass of Mo2O3 = 19.33 g Mass of new oxide = 20.62 g

Q: The mass % of water in ZnSO4. xH₂O is 43.84%. The name of the hydrate is Zinc sulfate penta hydrate…

A: From the percentage of water, number of water molecules in the formula unit of the hydrate can be…

Q: 1. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We can calculate the moles of any substance from the following formula : Moles of substance = mass…

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

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Q: You wish to prepare 217 grams of 19.7 % MnCl2. You will need_________________  grams of…

A: Mass of mgcl2= 42.74gm Voulme of H2O= 80.3ml

Q: che empirical formula for an ox

A:

Q: 25. Lactic acid (also known as milk acid) is composed of only carbon, hydrogen, and oxygen and has a…

A:

Q: Calculate the number of oxygen atoms in 25.1 g of nitric acid. O 4.80 x 1023 oxygen atoms O 7.19 x…

A: The number of moles of a substance is the mass of the substance upon its molar mass.

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: Classify each chemical compound listed in the table below. base type of compound (check all that…

A: Thank you.

Q: Determination of Hydrate Formula: barium chloride hydrate  Data:…

A: While heating the hydrate BaCl2.nH2O, the water in it escapes as water vapor. The amount of salt…

Q: Solution:              conductivity(MS) H2O distelled      95 H2O tap               1236 NH3…

A: The given molecules are, H2O distilled, H2O tap water, NH3

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: H H

A: The given structure is formed by the carbon and hydrogen atom hence it is a hydrocarbon. The carbon…

Q: A laboratory analysis of an unknown sample yields 73.13% carbon, 7.38% hydrogen, and 19.49% oxygen.…

A:

Q: How many grams of NaF are needed to form 485 g SF4? 3 SCI2 (1) + 4 NaF (s) → SF4 (g) + S2C12 (I) + 4…

A: Given that -  Balanced Chemical equation is -  3 SCl2 (l) + 4 NaF (s) ---> SF4 ( g) + S2Cl2 (l) +…

Q: A 48.6 g sample of 1,2-pentanediol (CxHyOz) is burned in the presence of excess oxygen, and a total…

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Q: An air conditioner compressor contains pure CClF3, also known as the refrigerant R-13. CClF3 has a…

A: We know that, density can be expressed as the mass per unit volume, i.e.…

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: A mixture of carbon and sulfur has a mass of 9.0 g. Complete combustion with excess O2 gives 23.3 g…

A:

Q: A molecule contains 16.623% hydrogen, 2.078% oxygen, and no other element except carbon. What is the…

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Q: The mass % of water in ZnSO4. xH₂O is 43.84%. The name of the hydrate is Zinc sulfate penta hydrate…

A:

Q: From the given molar mass and empirical formula of several compounds, find the molecular formula of…

A:

Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.56 mL of water at…

A: The density of a substance is the mass of the substance upon volume. The number of molecules is the…

Q: Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated…

A: Molecular formula of phosphoric acis is H3PO4.  Molecular mass is determined by the sum of atomic…

Q: NH₂ 1. Hg(OAc)2, THF 2. NaBH4, NaOH

A: This is an example of oxymercuration demercuration reaction

Q: This is the chemical formula for iron(II) hydroxide: Fe(OH)2. Calculate the mass percent of oxygen…

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Q: You analyze a sample of a compound you made in the lab and find that it has a percent composition by…

A: Answer: Empirical formula is C4H2O and three answers from the  given list are C4, H2, and O.

Q: Calculate the mass in milligrams of 4.67 x 104 formula units of Bi(NO3)3 5H,0. Enter your answer in…

A:

Q: The molar mass and empirical formula of several compounds are listed below. Find the molecular…

A: Here Molar mass of molecule and Empirical  formula  gas.  molecular formula  = (Empirical  formula)n…

Q: A compound (molar mass= 324.41 g/mol) is used as a cardiac depressant. It has this percent…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: and (II) chloride. are formed when aluminum reacts with cobalt If no reaction occurs, type NR in…

A: Since aluminium is more reactive than cobalt so it displaces cobalt from its salt because more…

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.