Solving applied mass percent problems Cobalt(II) chloride forms several hydrates with the general formula CoCl, xH,0, where x is an integer. If the hydrate is heated, the water can be driven off, leaving pure CoCl, behind. Suppose a sample of a certaln hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 45.%. Whích hydrate is It? That is, what is x? Explanation Check © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Acces

Q: magnesium sulfate, MgSO4 ⋅ xH2O. When 6.499 g of Epsom salts are dehydrated by heating, 3.173 g…

A: Hydrated epsom salt = 6.499 g Dehydrated Epsom salt = 3.173 g Mass percent of water = ?

Q: One of the hydrates of Na2CO3 is sodium carbonate decahydrate A 55.6 gram sample of Na2CO3  10 H2O…

A: b b

Q: In this reaction: Mg (s) + I2 (s) → Mgl2 (s), if 10.0 g of Mg reacts with 60.0 g of l2, and 57.14 g…

A: Given,     Mass of Mg = 10.0 g     Mass of I2   = 60.0 g     Actual yield of MgI2 = 57.14 g

Q: Label the following parts of the chemical equation below: coefficient, subscript, products,…

A: Solution:

Q: Iron forms a compound with carbon monoxide, Fex (CO)y. To determine its formula, you carefully heat…

A: Please see explanation.

Q: The chemical formulas of the compounds are given: NaCl, N, O, K, Cr, O, KMnO a) Calculate their…

A: Here is the answer

Q: A particular compound is comprised only of the elements C, H, N, and Cl. Combustion analysis of…

A: Given that: Total mass of sample = 14.30 g Mass of CO2 = 31.22 g Mass of H2O = 6.764 g Mass % of N=…

Q: A- Balance The Equation NO2(g) + H2O(1) – HNO3(1) + NO(g) B- What is formula - -- -- mass of K2Cr207…

A: (A) We balanced a chemical reaction, due to stisfy the law of conservation of mass, which states…

Q: A student obtains a mixture of the chlorides of two unknown metals, X and Z. The percent by mass of…

A: Given: Mixture of metal X and Z. And mass percent of X and Z in the mixture.

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: 1. Law of Conservation of Mass. When diamond-a pure form of carbon-is burned in an oxygen…

A: C + O2-------> CO2

Q: This organic compound consists of 54.4% carbon, C and 9.1% hydrogen, H, while the remaining percent…

A:

Q: Nitrogen and hydrogen react to form ammonia gas according to the following unbalanced equation: N2…

A: Given, N2 + H2 → NH3 Mass of Nitrogen gas (N2) reacts = 2.7 g Hydrogen gas (H2) - excess reactant…

Q: When determing the molecular or empirical forumula of a compound given the composition in grams,…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: Mn. S,O. n H20 is the general formula of a certain hydrate. When 234.9 g of the compound of the…

A:

Q: 1,What is the percent by mass hydrogen in ammonium hydrogen arsenite (NH4)2HAsO4 Group of answer…

A: Given, compound (NH4)2HAsO4 % Mass of H = ?

Q: Which one of the following molecular formulas is also an empirical formula? C,H,0, A) C,H,SO В) H,O,…

A:

Q: Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means…

A:

Q: empirical formula of bismuth chloride?

A:

Q: Disulfide dichloride (S,Cl,) is used in the vulcanization of rubber, a process that prevents this…

A:

Q: Menthol, the substance we can smell in mentholated cough drops, is composed of C, H and O. A…

A: Given: Mass of sample = 0.1005 g Mass of CO2 = 0.2829 g. Mass of H2O = 0.1159 g. Molar mass of CO2 =…

Q: If 10.00 ml of 0.0138 M KIO3 are used in the first part of the standardization process, how many…

A:

Q: When 12.0 g of carbon is burned in oxygen during an experiment, only 26.1g of carbon dioxide was…

A: The percentage of yield of a reaction= experimental yieldtheoritical yield×100 % The theoretical…

Q: Individual atoms, ions, molecules are small and light that can't be measured with nomal balances.…

A: The given mole concept practice explain that we can do conversion between mass and mole using molar…

Q: 3. What physical property of water and HCl allows us to separate them from the zinc chlorine…

A: Solution: We know the solubility principle i.e. likes dissolves like. Since HCl is the strong acid…

Q: A new organic material is to be examined by combustion analysis. Burning 0.09303 g of this sample in…

A: The sample contains the percentage of, C = 40.63 % H = 5.08 % O = 54•28%

Q: Hydrated nickel(11) is a beautiful, green, crystalline compound. When heated strongly, the compound…

A: Initially we find the loss of water moles and NiCl2 moles after dehydrated. Moles= weight/molar mass

Q: One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the…

A: we need to determine the empirical formula of the nerve agent

Q: This Is the chemical formula for talc (the main Ingredient In talcum powder): Mg,(Si,0,),(OH), An…

A: Using the number of moles of oxygen, we will calculate the moles of hydrogen in the talc from its…

Q: The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea…

A: Formula of Urea is NH2CONH2  molecular mass of urea = 60 amu Formula of Arginine is C6H14N4O2…

Q: Which of the major physical laws of chemistry are being tested when you calculate the percent…

A: Percent recovery is calculated by the following formula % recovery = (amount recovered/initial…

Q: Abel reacts copper with silver nitrate and recovers 5.2 g Ag. However, after mass to mass…

A: Percentage yield is one of the parameter to find the efficiency of the reaction.

Q: Taking 28,6 g of Na2CO3.xH2O, it is heated in a burner flame. After the heating process, the mass of…

A: The reaction when Na2CO3.xH2O is heated is as follows: Na2CO3.xH2O →Na2CO3+xH2O

Q: Lysine is an amino acid which has the following elemental composition: C, H, O, N. In one…

A: Lysine is an amino acid which has the following structure:

Q: The molecular formula of a compound is never the same as its empirical formula. is it true or…

A: Stereochemistry is a branch of chemistry that deals with the arrangement of atoms in the space…

Q: Perform the following conversions: 0.043 mole MgCl, g MgCl, 73g SO, mole SO, 3.0 mole CH, molecules…

A: 1) Given : Moles of MgCl2 = 0.043 mol Molar mass of MgCl2 = Atomic mass of Mg + Atomic mass of Cl X…

Q: Menthol, from oil of mint, has a characteristic odor. The compound contains only C, H and O. If 83.1…

A: Empirical formula :- The chemical formula which shows only relative number (simple ratio) of  atoms…

Q: Phosphorous and sulfur form an extensive series of sulfides with the general formula PxSy. Determine…

A: Recall the measurements, %S=72.1 % Unknown = PxSy

Q: The last step in the production of nitric acid is represented by the following reaction: 3 NO2(g)…

A:

Q: Given: Avogadro's number=6.022 E23 Convert 10.5 moles of Compound M (molar mass 250.0 g/mol), using…

A: Answer to the following questions can be given as follows -

Q: 3. Mass Ratio. Hydrogen gas for fuel cells can be made by decomposing methane (CH4), which is the…

A:

Q: Dichlorine monoxide, Cl,0, is sometimes used as a powerful chlorinating agent in research. It can be…

A:

Q: An elemental analysis of a compound containing S and O produce 50.00 % S and the rest is oxygen.…

A:

Q: Dichlorine monoxide, Cl,0, is sometimes used as a powerful chlorinating agent in research. It can be…

A: We are given the following reaction for the preparation of Cl2O. HgO+Cl2-------->HgCl2+Cl2O. The…

Q: The compound NH4CI can be decomposcd to form NH3 and HCI. This can be represented at the atomic…

A: Given, Mass of Ammonium chloride = 28.5g Mass of Ammonia = 9.1g

Q: The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists…

A:

Q: A 3.750 g sample of the compound responsible for the odor of cloves (containing only C, H, and O is…

A:

Q: The percent by mass of silver in Ag,CO3 is %.

A: Molecular mass of Ag2CO3 = 2*atomic mass of Silver + atomic mass of Carbon + 3*atomic mass of Oxygen…

Q: containing chromium, Cr; chlorine, Cl; and oxygen, O, is analyzed and found to be 33.6% chromium,…

A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".