Part a) When FeS3 • 2H2O is heated, it gives off water, SO2 and Fe2O3. Is this a chemical or physical change? When CuSO4 • 5H2O is heated, it gives off water and CuSO4. Is this a chemical or physical change? Which of these changes can be easily reversed? Part b) Is the molar ratio of the products is different from the molar ratio in the hydrate formula, has a chemical or physical change taken place?

Q: A sample weighing 3.137 g is a mixture of Fe₂O3 (molar mass = 159.69 g/mol) and Al₂O3 (molar mass =…

A:

Q: capital letter

A: Dear student I have given answer to your question in the image format.

Q: Write a balanced equation for the combustion of gaseous propane (C3H8), a minority component of…

A: Propane is a flammable gas and burns easily in the presence of enough oxygen. The combustion of…

Q: balance this equationC2H4(g)+O2(g)----->CO2(g)+H2O(g)

A: Balancing a chemical equationSteps,First balance carbon on both sidesThen balance hydrogen and…

Q: A muffin recipe calls for cream of tartar, or potassium hydrogen tartrate, KHC4H4O6(s). The amount…

A:

Q: Consider the chemical formula for one molecule of methane, CH4. If instead of one molecule we had 10…

A: According to chemical formula of methane ( CH4 ) , it's very clear each molecule of methane has one…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A:

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

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: The molar mass of M(OH)2 formed by the hypothetical metal M, is 144.096 g/mol what is the molar mass…

A: Molar mass of a compound is equal to the sum of the molar masses of all the elements. The molar mass…

Q: A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The…

A: Given:Mass of CO2 = 167 mg.Mass of H2O = 34.2 mg.Molar mass of CO2 = 44 g/mol.Molar mass of H2O = 18…

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: Write the balanced chemical reaction for the combustion of gaseous propane (C3H8) to form water…

A:

Q: What mass of each product is expected when a 6.40 g sample of pure carbon is burned under each of…

A:

Q: how many grams of aluminum are required to produce 17.5 grams of hydrogen?

A: Given :- 6 NaOH + 2Al --> 2Na3 ALO3+3H2                 mass of H2 = 17.5 g   To be calculated :-…

Q: PCL5(s) + H2O(l) ----> POCl3(l) + 2HCl(aq) When 79.60 g of phosphorus pentachloride reacts with…

A:

Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…

A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol

Q: 6 NaOH + 2AL --> Na3 ALO3+3H2 how many grams of aluminum are required to produce 17.5 grams of…

A: Given that  6 NaOH + 2Al --> Na3AlO3 + 3H2 Molar mass of H2 = 2.016 gram Given mass of H2 = 17.5…

Q: composition- a compound breaks down into elements and/or simpler compounds. KNO; ? KNO, + O2 NaN, ?…

A: Decomposition reaction of KNO3 is given by:   KNO3 → KNO2 + O2 There are 3 Oxygen atoms on reactants…

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: The following equation is not balanced: CaSO4+AlCl3→CaCl2+Al2(SO4) Notice that "SO4" appears in…

A: A balanced equation is one where the number of atoms of each element on either side are same If the…

Q: Phenobarbital is a sleep-inducing drug whose chemical formula is C12H12N2O3. It is manufactured in…

A:

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca3(PO4)2(s) +…

A: The given equation is as, Mass of Ca3(PO4)2 = 75% of mass of Phosphorite Mass of Ca3(PO4)2 = 0.75 x…

Q: Sodium

A: 2. Given chemical reaction is- Fe(ClO3)2 + Na2S -> FeS + 2NaClO3  Given that Fe(ClO3)2 is in…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: All the answers to the given questions have been discussed with the detail explanation and step by…

Q: 3N2 (g) + H2(g) ~> 2NH3(g) is the balanced chemical equation for the synthesis of ammonia. If an…

A: Given balanced chemical equation for the synthesis of ammonia is  3N2 + H2 ----> 2NH3 Starting…

Q: Benzene (C6H6) is a liquid with a density of 0.874 g cm-3. It reacts with oxygen to give carbon…

A: Density of Benzene = 0.874 g cm-3 Volume of Benzene = 21.3 cm3

Q: When burning butanol (C4H100), what mass (in g) of butanol must be reacted to produce 55.4 g of…

A: Mass (in g) of butanol must be reacted to produce 55.4 g of productsThe balanced equation for…

Q: Alcoholic fermentation converts glucose (C6H12O6) into ethanol (C2H5OH) and carbon dioxide (CO2).…

A: Alcoholic fermentation of Glucose gives Ethanol and Carbon dioxide. It can be written in chemical…

Q: When aluminum metal is placed into hydrochloric acid (HCl), aluminum chloride and hydrogen gas are…

A: Here we are required to find the mass of HCl needed to produce 2.02gm of hydrogen gas

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca₃(PO₄)₂₍s₎ +…

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".