Calculate the number of atoms of silicon (Si) in 415 cm3of the colorless gas disilane at 0°C and atmospheric pressure, where its density is 0.00278 g cm-3 . The molecular formula of disilane is Si2H6.

Q: 3. Н.РО, 4. Al(ОН),

A: Given, 3. H3PO4 4. Al(OH)3      Required,                    Percentage composition of the above…

Q: The lanthanide elements react with oxygen to give compounds of the type Ln2O3 (where Ln stands for a…

A: Empirical formula :- The simplest formula which shows only the relative number of atoms of different…

Q: Give the number of atoms of the specified element in a formula unit of each of the following…

A: a) The given compound is C6H5COONH4 The number of a hydrogen atom is 9 The molecular mass of the…

Q: Identify the Lewis acid and Lewis base in each reaction:

A: The Lewis acid and Lewis base in each reaction: (a) Fe3++2H2O↔FeOH2++H3O+ (b) H2O+H-↔OH-+H2 (c)…

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H2O is 44.71%. Identify the…

A:

Q: What is the empirical formula of the compound with the molecular formula C18H36?

A: The empirical formula of any compound is the simplest ratio of atoms of the molecular formula of…

Q: Mass Percent of Oxygen (theoretical) 3 (Molar Mass of O) Molar Mass of KClO3 x 100

A: For the potassium chlorate (KClO3)  Using the molar mass of oxygen and KClO3 we can calculate the…

Q: Find the percentage of nitric acid if you know that 9.777 G has been diluted with water to a liter…

A: GivenNormality of NaOH solution =.104 Nvolume of NaOH=25 mLVolume of HNO3 used in neutralization…

Q: Determine the molecular formula of a compound with the empirical formula CF, and molar mass of…

A:

Q: Tetracarbon dioxide is an unstable oxide of carbon with thefollowing molecular structure:What are…

A: The name of the compound given is tetracarbon dioxide. And the structure of the compound is given as…

Q: The number of atoms in 0.4 moles of CO2 molecules and 0.6 moles of X are equal. Accordingly, which…

A:

Q: Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains…

A: The given data contains, mass of dolomite = 7.81 g. mass of calcium = 1.70 g

Q: Mass spec: M = 161 (100%), 163 (33%). Which of the following is %3D a possible molecular formula?…

A: In this mass spectrometry data, we are given two peaks whose intensity ratio is also given . So we…

Q: Calculate the mass percent of manganese (Mn) in potassium permanganate (KMnO4).

A: First of all, before leading to the solution we will learn about the meaning of mass percent. The…

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H20 is 44.71%. Identify the…

A:

Q: Dinitrogen monoxide (N₂O; nitrous oxide) is a greenhousegas that enters the atmosphere principally…

A: Isotopes possess same number of protons but differ in number of neutrons thus, they have different…

Q: calculate the number of atoms of F in 32.5g of flourine gas, F2

A: Since moles of F2 = mass of F2 / molar mass of F2  molar mass of F2  = 38 g/mol Hence moles of F2  =…

Q: Calculate the mass percentage of carbon in a mixture that contains 244 grams of potassium carbonate…

A: Molar mass of K2CO3 = 138 g/mol Molar mass of citric acid = 192 g/mol

Q: 6. The compound para-aminobenzoic acid is composed of Carbon (61.32%), Hydrogen (5.14%), Nitrogen…

A: Answer:- Given - total mass of PABA =100g Carbon= 61.32%, Hydrogen= 5.14%, Oxygen=23.33% and…

Q: 6. Explain what the coefficient of 4 means in the following chemical formula: 4K,SO,

A: Given that, 4K2SO4

Q: For the compound (Ca(OH)2) or calcium hydroxide, find the per cent composition of the element…

A: Given: The atomic weight of Ca=40 Molecular mass of calcium hydroxide= 1 x 40 + 2 x (1 + 16)=74…

Q: a) Iron (III) chlorate, Fe(CIO3)3

A: What is oxidation number of O in Fe(ClO3)3 ?

Q: There are ________ atoms of hydrogen in 300 molecules of CH3CO2H.

A: It is given that there are 300 molecules of CH3CO2H.

Q: - A I(NO3). 9H2 O H. H3 040 PW12 • xH20 5. Fe: (SO4), 9H2O 6 Sn Cly• 5 H2 O 3

A:

Q: In the ammonia (NH) molecule of the figure, the three hydrogen (H) atoms form an equilateral…

A: You can find the center of mass of the 3 Hs first, then find the center of mass between that point…

Q: What is the mass to charge ratio of a propane ion (C3H3*) if one of the carbon atoms is a 13C and…

A: The mass to charge ratio of the propane ion (C3H8+) can be calculated by taking the sum of the mass…

Q: Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) acetaminophen, C8H9NO2…

A: Formula mass is the sum of all the atomic masses present in that compound. Atomic masses: C = 12 u N…

Q: Polyisobutylene is a synthetic elastomer, or rubber. The corresponding monomer is isobutylene, which…

A:

Q: Calculate the molecular mass of the following substances: (a) Ibuprofen, C13H18O2 (a drug used as…

A: Introduction: Molar mass is the mass of 1 mole of a substance in a gram. It is also called molecular…

Q: CrO, но H,0* .CI OH CI 1. DMSO, 2. Et,Cl

A: Given reactions are oxidation reaction of primary alcohols.

Q: what is the mass percentage of water in Zn(NO3)2*6H2O?

A: Mass percentage of water = Mass of waterMass of Zn(NO3)2.6H2Ox100There are total six water molecule…

Q: Give the number of atoms of the specified element in aformula unit of each of the following…

A:

Q: sent in 8.58 x 102 molecules of this compound?

A: Dear student I have given answer to your first question in the image format. i cannot answer other…

Q: Vitamin C is a covalent compound with the molecular formula C6H8O6. The recommended daily dietary…

A: Number of moles of a substance is equal to the mass of substance divided by molar mass. Write the…

Q: 2. What is the mass percent of iron in Fe(NO3)3 • 9H2O?

A:

Q: Determine the mass percentage of carbon, C, hydrogen, H, and oxygen, O, in C,H2O6. R

A: Given :-  Molecular formula of glucose = C6H12O6  To be determined :-  Mass percentage of C, H and O…

Q: What is the mass of Cu(C2H3O2)2 ✕ H2O?

A: Molar mass of Cu(C2H3O2)2 .✕H2O = (63.5 x 1) + (12 x 4 + 1 x 6 + 16 x 4) + (18 x X) = 63.5 + 120 +…

Q: Q/ Prepare 0.1 N and 0.1 M of 98% H,SO4 in 250 ml. M.wt of H,SO, = 98 g/mol, and its Specific…

A: Let 100% of the solution of H2SO4 is equivalent to 100 g. Thus, 98% H2SO4 is equivalent to 98 g…

Q: Calculate the exact masses of the ions C5H8O1 and C6H12 1, both of which have a nominal mass of 84.…

A: The organic compounds can be identified by various characterisation techniques. For example, NMR,…

Q: 2. Explain how the chemical formulas H (aa and H.O for the same thing. are interchangeable notation…

A:

Q: Which of the following gases consist of molecules containing three or more atoms?? O Rn O N,0 CI, Ar…

A:

Q: What do the formula H2O and H2O2 tell about composition? Are they the same compounds? Justify your…

A:

Q: 6.Calculate the mass percent of H in CH5N.

A: 1- First we will determine the mass of compound :  Molar atomic mass of C, H and N are 12, 1 and 14…

Q: why ny is Bacly:2H,0 not written as Bacla Hy Oz

A: Why BaCl2.2H2O is written as BaCl2H4O2 ?

Q: The empirical formula of C9H9O6 is CHO True O False

A: Empirical formula is the simplest ratio exist between different atoms present in a compound.…

Q: Give the empirical formula for decaborane, whose molecularformula is B10H14.

A: The given molecular formula is B10H14 The empirical formula is the one which shows the simplest…

Q: Given Ongiali mass of KNO3, =20009 mass 07 KNO3 collected by pt°z.ltration=o+579 07 KNO3 re mainina…

A: Original mass of KNO3 = 2g After filtration mass of potassium nitrate remaing is 0.57g. It means…

Q: How many H atoms are there in 40 molecules of C6H6?

A: Given that, 40 molecules of C6H6

Q: How many g of water you need to add into HCl solution (V= 130.0 cm3 mass percentage 22.0 % (w/w),…

A: Mass = Volume ×Density

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".