4. A 1.628-g sample of a hydrate of magnesium iodide is heated until its mass is reduced to 1.072 g and all water has been removed. What is the formula of the hydrate?

Q: A tube of Thothpaste contains 0.76 g of sodium monofluorphosphate (Na2PO3F) in 100 mL. a)what mass…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: A) What is the formula of magnesium melonite dihydrate?  B) What is the mass % of melon in copper…

A:

Q: A compound is 43.7 % P, and 56.3 % O by mass, and has a molar mass of 283.88 g/mol. What is the…

A: Element % composition Atomic Mass Relative no of atom=% compositionatomic mass Simplest atomic ratio…

Q: 3.135 A certain metal M forms a bromide containing 53.79percent Br by mass. What is the chemical…

A: Let the mass of the compound be 100 g. Then the mass of the Br is 53.79. Calculate the mass of the…

Q: A brass alloy contains 78.9% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A: We have to predict the moles of Zn and atoms of Zn.

Q: b: A compound is 16.2% carbon, 18.9% nitrogen, and 64.9% oxygen. Its formula mass is around 296 amu.…

A:

Q: a 2.558 g sample of sodium carbonate hydrate was heated to drive off the water resulting in 0.948 g…

A: The substance which contains water or its constitute element is known as hydrate.

Q: In a 6.43E1 g sample of NaHCO, how many grams of sodium are present? Use two decimal places in…

A: Mass of NaHCO3 = 6.43E1 = 64.3 g

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and  0.440 g of…

A: To answer this first of all we have to convert grams into moles and we have to determine the simple…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Q8 -Boric acid, H3BO3, is a mild antiseptic and is often used as an eyewash. A sample contains…

A:

Q: An organic compound has a molecular mass of 329.0 amu and contains 72.95% carbon by mass. How many…

A: The ratio of mass of particular element to the total mass of compound multiply by 100 is known as…

Q: Write the empirical formula of an ionic compound?

A: ANSWERE IS DISCUSSED BELOW :

Q: Tetrodotoxin is a toxic chemical found in fugu pufferfish, a popular but rare delicacy in Japan.…

A: Given that : % composition of Tetrodotoxin : 41.38% carbon by mass, 13.16% nitrogen by mass, and…

Q: The recommended daily allowance(RDA) of selenium in your diet is 8.87 × 1 0 -4 mol. Howmany atoms of…

A: The number of atoms from the given number of moles can be calculated as the product of number of…

Q: Caffeine, a stimulant found in coffee and soda, has the mass percent composition: C, 49.48%; H,…

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Q: 1. Upon heating, a 2.500 g sample of hydrated magnesium chlorate, Mg(CIO3)2 loses 0.903 g of water.…

A: Water of crystallization It is the fixed number of water molecules attached to each formula unit of…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

A:

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: In this question, we want to determine the moles of Nitrogen gas. How we can determine, you can see…

Q: The empirical formula for Antifreeze is CH,O. What would be the molecular formula if the mass of…

A:

Q: An 85.00 g sample of an unknown compound contains 24.26 g molybdenum, 24.33 g sulfur, and the rest…

A: Given,  Mass of the compound = 85.00 g  Mass of molybdenum = 24.26 g  Mass of sulfur = 24.33 g  Mass…

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 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A:

Q: Based on your answer in Part B, how many electrons are in this amount of 1°OC?

A: Given :- mass of 13C = 5.00 g  To be calculated :- number of electrons    Number of moles =…

Q: How many Praseodymium atoms are present in 2.99 moles of Praseodymium ?

A: Given : 2.99 moles of Praseodymium ( Pr) Molecular weight of Pr = 140.91 grams

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A:

Q: c- The formula for water is contains .. (... x1+...X 16 =....) D- the combustion of fuels is…

A: Water is a compound and is made of Hydrogen and oxygen. Chemical reactions are of various types-…

Q: A 3.41 g sample of a metallic element, M, reacts completely with 0.0158 mol of a gas, X2, to form…

A: Given: 3.41 g of metallic element M. 0.0158 mol of gas X2. mass of MX formed is 4.52 g. we need to…

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: Mass of Sample = 0.933 gMass of Nickel Nitride = 1.081 gmoles of Nickel in sample = To be determined…

Q: A metal (M) forms a compound with the formula MCl3. If the compound contains 65.57% Cl by mass, what…

A: Let the mass of the compound be 100 g. Mass of chlorine present in the compound = 65.57 g Mass of…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: Amounts of tin may be alloyed with copper to produce bronzes of varying composition and properties.…

A: Given :  Mass of bronze = 8.9394 g  Mass of mixture of oxides = 11.2311 g

Q: The carat is the unit of mass used by jewelers, and it is exactly 200 mg. How many carbon atoms are…

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Q: Rusting Nails: Nails are made of the element iron. Iron has the atomic mass 55.8 g/mol. Nails are…

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Q: 1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in the…

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Q: A student, Ken, is given a mixture containing two sulfate compounds. The  mixture includes K2SO4 and…

A: Given mixture is K2SO4 and BaSO4. The mixture is 52.12 % SO4 by mass. Molar mass of…

Q: 2. A hydrocarbon was found to be 20% hydrogen by mass. If the molar mass is 30 g/mol, what is the…

A: Note : As per our guidelines we are supposed to answer first question. Please repost the other…

Q: A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in anhydrous cobalt (II) sulfite…

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Q: 19 How many nitrogen atoms are present in 25.00 g of N,O,?

A:

Q: What is the empirical formula of a molecule containing four sulfur atoms and four fluorine atoms?

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: Upon heating, a 2.500 g sample of hydrated magnesium chlorate, Mg(ClO3)2 loses 0.903 g of water.…

A: A numerical problem based on determination of number of hydration, which is to be accomplished.

Q: Explain Composition of Compounds?

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Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: formula of the hydrate

A: When a hydrous salt is heated, it loses the water of crystallization. Water of crystallization =…

Q: What is the mass percent of chlorine in NH4Cl?

A: First, find the total mass of NH4Cl.NH4Cl = 54g/mol

Q: the mineral hausmannite is a compound of Mn and O. If hausmannite is 72% Mn by mass, what is the…

A: Given, 72% Mn by mass

Q: 1. A sample containing only CaCO3 (100.0869) and MgCO3 (84.3139) was ignited and carbonates…

A: Molar mass of CaCO3 = 100.0869 g/mol Molar mass of MgCO3 = 84.3139 g/mol Molar mass of CaO = 56.0774…

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.