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: Given the following set of data for the determination of empirical formula of magnesium oxide: -…

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Q: 9. When a candle has been burning for an hour, its mass is less than it was at the beginning. (a)…

A: (a) Candles losses weight when it melts down. The mass of candle does not change during the melt…

Q: Grignard reagents, which contain a C—Mg bond, have thegeneral formula CH₃—(CH₂)ₓ—MgBr and are…

A: GIVEN: General formula CH₃—(CH₂)ₓ—MgBr To Solve: a)mass percentof Mg if x=0 b) mass percent of Mg if…

Q: What is the mass (in ka) of 6.89 x 1025 molecules of CO2? The moiar mass of co2 is 44.01gimoi. :-

A: The mass of CO2 is calculated by finding moles of CO2.

Q: Thirteen grams of titanium metal react with sixty grams of bromine. (i) Calculate the mass (in gram)…

A: The balanced chemical reaction is as follows: Ti(s)+2Br2(l)→TiBr4. The mass of Ti=13 g. The mass of…

Q: The molecular formula for caffeine, one of the key compounds found in coffee and tea, is C8H10N4O2.…

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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: Determine the mass percent of anhydrous sodiumcarbonate (N a 2 C O 3 ) and water in sodium…

A: Given   Anhydrous sodium carbonate : Na2CO3  Sodium carbonate decahydrate: Na2CO3 ·10 H2O…

Q: 10. Which of the following does not match the others? 168 (A) 67.2 3.88 1000 100 10 All, (M)/mol)…

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: What is the mass percentage of C in codeine, C₁₈H₂₁NO₃? Provide an answer to two decimal places.

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Q: Explain the difference between the terms molecularmass and formula mass. To what type of…

A: The difference between molecular mass and formula mass has to be explained and the type of compound…

Q: in cold water. ii) A hydride which is spontaneously flammabie in air ii) A hvdride which on…

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Q: Quartz, SiO2, contains 46.7% silicon. What mass of silicon is present in 370 g of quartz?

A: To solve this problem we have to calculate the mass of silicon present in quartz .

Q: 3. The radius of an atom of gold (Au) is about 1.35 A°. (a) Express this distance in nanometers (nm)…

A: For the first problem just convert the units to the required one . In the 2nd problem, if we line up…

Q: A possible practical way to eliminate oxides of nitrogen (such as NO2) from automobile exhaust gases…

A: C3N3(OH)3→3HCNOUnbalanced equation,C3N3(OH)3+NO2→N2+CO2+H2O

Q: For each of the equations, determine the change in the number of moles of gas, Angas . (NH,),CO3(s)…

A: A chemical reaction is represented by using a chemical equation. In a chemical equation, the species…

Q: 6) 0.025 MOL OF AN IONIC COMPOUND AlaSp CONTAINS o.05 MOL CATIONS AND 4.5x1022 anions. Given: molar…

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Q: A given sample of xenon fluoride contains molecules of a single type XeFn, where n is some whole…

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Q: A sample of soda-lime glass for tableware is analyzed and found to contain the following percentages…

A: Given- % by mass of oxides SiO2 = 72.4% Na2O =18.1% CaO = 8.1% Al2O3 =1.0% MgO = 0.2% BaO = 0.2%…

Q: How many molecules are there in (3.61*10^ ^ 3)N 2 l 6 Answer to 3 significant figures. Note: Your…

A: Given :  Number of moles of N2I6 = 3.61 × 103  To calculate : Number of molecules

Q: Tartazine, C16H9N409Na352, is a synthetic yellow food dye that provides a lemon color to various…

A: The objective of the question is to find out the mass of tartrazine in grams that corresponds to 7 x…

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: The following data was obtained in an experiment to determine the water content in sodium alum, [Na…

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Q: (b) A compound is composed of elements C, H, and N. A 8.400-mg sample of the unknown compound was…

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Q: See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F b)…

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: Write the correct formula of copper (II) sulfate pentahydrate.

A: We'll answer first question only since the question to be answered is not mentioned. Please resubmit…

Q: ii) A hydride which on electrolysis in the molten state gives hydrogen at the anode do which in

A: HYDRIDES: In chemistry, the hydrogen atom with a negative charge is known as a hydride. The hydride…

Q: The effectiveness of nitrogen fertilizers depends on boththeir ability to deliver nitrogen to plants…

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Q: What is the total number of carbon atoms on the right-hand side of this chemical equation?…

A: To answer this question we need to count the total number of atoms of carbon (i.e.- "C") on the…

Q: How many chloride atoms are in 32.3 g of CaCl2?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: 2HCN9) + 6H,0 (9) 302(9) 4. How many Liters of HCN gas can form from the reaction of 1.56 x 106…

A: The limiting reagent of a reaction is the compound that is consumed completely in the reaction. It…

Q: a) Using NO2(g) as an example, show with dimensional analysis that the molecular mass and molar mass…

A: To convert u (amu) to g/mol, u is converted to g and then multiplied with the Avogadro constant.…

Q: For the element aluminum, Al: (a) Calculate the number of moles in 7.54 g. (b) Calculate the number…

A: Data given: (a) The mass of aluminium = 7.54 g (b) The number of moles of aluminium = 0.154 mol (c)…

Q: How do I calculate the number of molecules in 6.00 ml of acetic anhydride, C4H6O3, if the density of…

A: Given : Volume of acetic anhydride = 6 mL Density of acetic anhydride =1.08 g/cm^3 ( 1 mL = 1 cm^3 )…

Q: 4) + ? ? H20 HO,

A: Alkyl magnesium halide ( R-Mg-X ) is called Grignard reagent. Ketones reacts with Grignard reagent…

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".