Cobalt(II) chloride forms several hydrates with the general formula CoCl2 ·x H2O , where  x  is an integer. If the hydrate is heated, the water can be driven off, leaving pure  CoCl2  behind.   Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 22.% . Which hydrate is it? That is, what is  x

Q: The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a…

A: Molar masses KClO3 = 122.55g/mol P4O10 = 283.88g/mol KClO3 =  67.3 g mass of P4O10 = ?

Q: (a) A compound MX2 is formed from the M²+ and X ions. The compound contains 86.8% of X by mass. In a…

A: a) Given that,molecular formula of the given =  MX2 The percentage of X in the compound= 86.8% In a…

Q: Phosgene, a substance used in poisonous gas warfare during World War I, is so named because it was…

A:

Q: Tetrasilane (Si4H10) is a liquid with a density of 0.825 g cm-3 . It reacts with oxygen to give…

A: First calculate the mass of tetrasilane. Convert the above calculated mass to moles.

Q: Barium reacts with water to produce barium hydroxide and hydrogen gas. When 5.489 g Ba is combined…

A: Given: Mass of Ba = 5.489 g Mass of H2O = 53.00 g Mass of Ba(OH)2 produced = 6.849 g Chemical…

Q: A sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000 g sample of the…

A: Weight of the hydrated aluminum oxide (Al2O3 . xH2O) = 5.000 g Weight of the anhydrous alumina (when…

Q: Like many metals, aluminum reacts with a halogen to give a metal halide. 2 Al(s) + 3 Br2(ℓ) n…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: 0.93 g sample of NaCr(SO4)2.XH20 was heated in a crucible to get a constant mass. If the mass of the…

A: Molar mass of NaCr(SO4)2.xH2O = 0.93 g = AMass of NaCr(SO4)2= 0.70g = BMolar mass ofNaCr(SO4)2 =…

Q: The smell of a burning match is due to the formation of sulfur oxides. We can represent the relevant…

A: The given reaction is: S+O2→SO2......(1) The mass of sulfur burned is 4.8 g.

Q: A 1.42 g sample of KCr(SO) XH20 was heated in a crucible to get a constant mass. The mass of the…

A: Formula to calculate mole is :-  Mole = mass÷ molar mass

Q: An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by mass…

A: For calculation of Molecular formula, first of all we calculate the % of each atom , empirical…

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

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: Ammonia is produced from the reaction of nitrogen and hydrogen according to the following balanced…

A: Given information,        1.40 × 103 g N24.60 × 102 g H2

Q: A binary compound of the elements X and Y is 1/3X by mass.  The molar mass of element X is ¾ the…

A: Empirical Formula  It is the simplest possible ratio of atoms present in a compound. To get the…

Q: A candle flame produces easily seen specks of soot near the edges of the flame, especially when the…

A: Empirical formula: The simplest positive integer ratio of atoms present in a compound is known as…

Q: Copper(II) sulphate, CuSO4, is a white crystalline compound that gives an aqueous solution from…

A: The mass of copper(II) sulphate pentahydrate, CuSO4.5H2O is = 1.547 g  The mass of anhydrous of…

Q: If there were 4.00 x 10^23 sodium ions available, (and more than enough carbonate ions), how many…

A:

Q: Potassium alum or potassium aluminum sulfate dodecahydrate KAl(SO4)2.12H2O is a hydrate which means…

A:

Q: Assume 100% yield. a) 10.0 g of copper sulfate are formed. b) H2SO4 is the limiting reagent. c)…

A:

Q: 0.93 g sample of NaCr(SO4)2.XH20 was heated in a crucible to get a constant mass. If the mass of the…

A: In this question, we want to determine the value of x in the given Compound. How we will determine,…

Q: Ammonium nitrate is a common ingredient found in many fertilizers and is the main component that…

A: Introduction Ammonium nitrate has the chemical formula NH4NO3, and ammonium hydrogen phosphate has…

Q: 7. Elemental phosphorus is produced by the reaction, 2 Ca3(PO4)2 + 6 SiO₂ + 10 C6 CaSiO3 + 10 CO +…

A: The given reaction is 2Ca3(PO4)2 +6SiO2 +10C→ 6 CaSiO3 +10 CO+P4 moles of Ca3(PO4)2 = 9.00 moles…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl6(PO4)+(OH):"4 H2O.…

A: Interpretation : Following questions need to be solved .

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25 × 1023…

A: Given;

Q: O Hydrated magnesium phosphate has the formula Mg,(PO.),-yH,O. A sample of this compound contains…

A:

Q: Enter your ansTwer in the provided box. One of the reactions that occurs in a blast furnace, in…

A: Given data : Mass of Fe = 1.49 × 103 kg = 1.49 × 106 g Mass of Fe2O3 = 2.38 × 103 kg

Q: When 145 g of MnCl₂ × nH₂O is heated, 92 g of the anhydrous compound is obtained. Find the number n…

A: Here n is number of moles of H2O, given that the mass of water = 92g

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: 4. a) A given inorganic compound contains only silicon (Si) and hydrogen (H). If the mass percentage…

A: An inorganic compound contain only silicon (Si) and hydrogen (H),a) given, mass percentage of Si =…

Q: A 2.1880 g sample of a hydrate of Cu(NO3)2 was heated to drive off all of the water of hydration.…

A: The objective of this question is to determine the value of 'x' in the formula of the hydrate…

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: An intermediate in the preparation of elemental titanium from TiO2 is avolatile chloride of titanium…

A: Given data, The volatile intermediate of titanium that contains 25.24% titanium by mass.  Then, the…

Q: A given compound is analyzed and found to contain only C, H and O. When a 35.79 g sample of this…

A: Given,

Q: A 37.169 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: Given that the compound contains only Carbon, hydrogen, sulfur and oxygen. Empirical formula is the…

Q: 33. Sulfurous acid is unstable in aqueous solution and gradually decomposes to water and sulfur…

A:

Q: Iron in the earth is in the form of iron ore. Common ores include Fe2O3 (hematite), Fe3O4…

A:

Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

A: Given data is: Length of plate = 15.0 cm Width of the plate = 12.5 cm Thickness of plate = 3.00 mm…

Q: In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant…

A: Given, mass of copper (II) nitrate hydrate is 34.8243g and when heated the mass is 27.0351g.  The…

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".