Iron(II) arsenide                   __________             44. Ammonia                       __________   45. Carbonic acid                       __________             46. Potassium sulfide           __________   47. Tin(IV) selenide                   __________             48. Lead(II) iodide              __________   49. Sulfur hexafluoride

Q: P.S. 6. A miner was digging up some ore (rock). The ore contains 84% lead(II) sulfide by mass. How…

A:

Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO,…

A: Given,

Q: . C. 6. . 6. . S. .. .. _H3PO4 + КОН → K+ _B₂O3 → HCI + NaOH → C + Na + NaOH + Rb + _C6H6 + S8 → _O₂…

A:

Q: 1 24 27 Fe: Select the spectator ions in the following equation: CaCl2 (aq) + (NH4)2SO4 (aq) -->…

A:

Q: Does a chemical reaction happen during this movie? If a chemical reaction does happen, write a…

A: The start of the movie shows the conversion of reactants into products. From the key, it is clear…

Q: Consider these compounds: A. MgCO3 B. Ni(OH)2 C. AgI D. MgF2 Complete the following statements by…

A: A) MgCO3 ⇌ Mg2++ CO32-      Ksp = 1.4 x 10-6B) Ni(OH)2 ⇌Ni2++2OH-       Ksp = 2 x 10-16C) AgI…

Q: - Potassium metal has a density of 0.89 g/cm³ and can be (carefully!) cut with a knife. Imagine you…

A:

Q: The mass spectrometer may be used to A. Electrolyze water B. Detect the presence of isotopes C.…

A: We need to find where mass spectrometry can be used.

Q: Functional Group Name Sample Functional Group Naming Rule R-OH name the chain that came from the…

A: 1) The functional group given is ROH.

Q: Q1 Complete the following table: [OH¯] pH [H,O*] Acidic, Basic, or Neutral? 2.0x10-6 9.8 3.5x10-3…

A:

Q: An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass…

A:

Q: tation and fiitra

A: 9) As we know, water and sand is heterogeneou mixture. So it can be separated by decantation. But…

Q: 1 H 1.008 3 4 Li Be 6.94 9.012 11 12 Na Mg 22.990 24.305 19 20 21 22 23 Ca Sc Ti v K 39.098 40.078…

A: Dipolemoment of any species can be explained using the polarity of the bond correspond to it. Now we…

Q: 4. Complete the following table Mass Moles Particles 3.65 moles Mg 29.54 g Cr 3.54 x 1025 atoms P…

A: Mass = Molar mass * Moles The no of particles in 1 mole = 6.023*1023

Q: A student performed the identical experiment to isolate Fe, NaCl, and SiO2 in a mixture. They…

A: Mixtures can be physically separated by using methods that use differences in physical properties to…

Q: You have a sample of soil. Soil is a heterogeneous mixture. You separate the different size…

A:

Q: 1. silver bromide a. Ag2Br b. Ag2Br2 C. AgBr2 d. AgBr 2. cobalt(III) oxide а. Соо b. Co2O3 с. Со2О…

A: Ionic compounds are formed by the transfer of electrons. The cation donates the electrons and the…

Q: A student is given a 1,8496 g of an unknown copper compound. Following isolation by displacement by…

A:

Q: 1. Which of the following contains the smallest percentage of iron? A. pyrite (FeS2) B. hematite…

A: A) pyrite (FeS2)

Q: Use the data below to determine the mass ratio of iron to oxygen for compound 1. Compound 1 2 Mass…

A: Given: In compound 1, Mass of Fe = 15.55 g and mass of O = 4.45 g

Q: +2 Pb Thallium Lead 200.592 2818 32 182 1832 18 1 204.383 207.2 28 18 32 10 2818 32 18 3 111 112 +2…

A: In Balanced chemical equation number of atoms of each species are equal on both reactant and…

Q: Which of the following equation is both physically and mathematically correct? Select all correct…

A: In thermodynamics, the thermodynamic properties are classified into two types of functions.There are…

Q: mass of sample moles of sample molecules in sample atoms in sample 4.07 g C6H6 4.00.0522 mol…

A:

Q: Metal Ca Fe Cu Mg Observations All the calcium reacted in less than 30 seconds. There was a vigorous…

A: Reactivity of various metal with HCI .

Q: Which of the following chemical equations demonstrates the law of conservation of mass? A. BaCl₂ +…

A: Given,The reactions:A. BaCl2 + H2SO4→ BaSO4 + HClB. Cl2 + NaBr →NaCl + Br2C. 2 H2 + N2 → 2 NH3D. 2H2…

Q: Which elements have more protons per atom than phosphorus? A bromine and sulfur B helium and…

A: Atomic number = number of protons  Atomic number of phosphorus(P) =15  So, it has 15 protons per…

Q: 9- An unknown compound is composed of C, H, and O. A 0.1005 g sample of this compound is combusted,…

A: We have to predict the empirical formula of compound 0.1005 g sample, produces 0.2829 g of CO2,…

Q: 4. You have two samples of KI. You measured the amount of K and I in one sample. You were only able…

A: #4:(a): Actually we have to find how much of K was in the second sample, not Cl. In order to find K…

Q: Consider these compounds: A. PbBr2 B. Ag,Cro4 C. Pb3(PO4)2 D. Ca3(PO)2 Complete the following…

A: Solubility Product the highest product of an electrolyte's ionic concentrations or activities that…

Q: 8. A mixture of sand and NH4CI can be separated by method. 9. Define latent heat of fusion. Give its…

A: 8.    Sublimation     Sublimation is the process by which a solid substance on heating converts…

Q: Two particles X&Y,X:17protons,18 neutron,17 electrons;  Y:17proton,18 neutron,18 elctrons.1.what…

A: The objective of the question is to understand the relationship between the two particles X and Y…

Q: 21     Ca (NO3)2 is ………………. ( soluble, insoluble ) salt.

A: Ca(NO3)2 is a salt of Ca(OH)2 (Strong base) and HNO3 (strong acid)

Q: 4. For each of the following chemical ........a. CH4(g) + O2(g) → CO2(g) + H2O(g)b. Al(s) + HCl(aq)…

A: (a)In a balanced equation number of atoms for every element and total change in the reaction are…

Q: If you are to compare decantation and filtration as separation processes, which do you think is more…

A: Filtration is method to separate a mixture of a solid in a liquid or a solid in a gas.

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".