A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound weighs 6.6 g. What is the molecular formula of this compound? C2H6 CH3 С3Н12 С4Н10 C3H8

Q: The number of moles of NaCI (sodium chloride) present in 150 mL of 0.0200 mol/L NaCl(aq) is: O a)…

A: In this question, we want to determine the number of moles of NaCl in the Solution. You can see…

Q: If 0. 274 moles of a substance weighs 62.5 g, what is the molar mass of the substance, in units of…

A: Given- Moles of substance =0.274 moles  Weight of substance= 62.5 g

Q: 1. A mixture of gases has the following composition by mole: % by Mole 11 % Gas O2 CO2 N2 6% 83 %…

A: Number of moles = weight ÷ molecular weight

Q: For items 1 and 2: 4NH3 + 302 6H2O + 2N2 1. What is the mole ratio of NH3 to H2O? 2. What is the…

A:

Q: Ethanol, C2H5OH, has a density of 0.785 g/mL and a molar mass of 46.07 g/mol. How many moles of…

A: Solution : Given, Density of ethanol = 0.785g/mL means 0.785 g ethanol present  in 1mL of ethanol…

Q: how many moles of NO2 are required to produce 1.33 mol of HNO3 in 3NO2+H2O=2HNO3+NO

A:

Q: What is the number of molecules in 256g of Li3PO4? OA 1.46 x 10-24 O B. 1.46 x 1023 OC. 1.46 x 10-23…

A: 1 mole of compound contain 6.022×1023 molecules . 1 mole = 6.022×1023 molecules  To find the number…

Q: Complete the table:   Compound Mass Moles Number of molecules CO2CO2 _____ 0.0124 _____ COCO _____…

A:

Q: How many grams of NBr3 can be made from 525 g Br2  ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ…

A: The reaction is as :-  N2 + 3Br2 ----> 2NBr3

Q: 2 Agl + Nazs → Ag2S + 2 Nal O 6.00 moles O 1.00 moles O 2.00 moles O 3.00 moles

A: Moles of AgI = 2.00 moles Moles of Na2S = 3.0 moles

Q: Consider the following reaction. How many moles of oxygen are required to produce 10.0 moles of…

A: Given,No of moles of water = 10 moleC3H7SH(l) +6O2(g) →3 CO2(g) +SO2(g) +4H2O (g)How many mole O2…

Q: 4 FeS2 + 11 O2     2 Fe2O3 + 8 SO2 how many moles of Fe2O3 can be obtained from 3.0 moles of O2

A: Balancing the equation 4 FeS2 + 11 O2  ------>   2 Fe2O3 + 8 SO2

Q: Convert 2.126 x 10-2 g/mole Ca(HCO3)2  to mmol/L of Ca(HCO3)2 to mmol/L of Ca to mmol/L of CaCO3

A: NOTE : 2.126 X 10-2 g/mole is incorrect concentration of Ca(HCO3)2 . It will be 2.126 X 10-2 g/L.…

Q: For items 3 and 4: SIO2 + 4HF SİF4 + 2H2O 3. What is the mole ratio of HF to SIF4? 4. What is the…

A: Number of moles is calculated by dividing given mass with molecular mass.

Q: What is the weight of nitric acid in 12.5N HNO3 solution? Use the following atomic weights H - 1…

A:

Q: How many grams of NBr3 can be made from  2.22 x 10-2 moles of Br2 ?  N2   +   3 Br2   →   2 NBr3…

A: Write down the given reaction N2 + 3Br2 ----> 2NBrccording to the stoichiometry 2moles NBr3 is…

Q: How many moles of CaCl2 are in 7.76 × 1024 formula units? 7.76 x 1024 formula units = mol

A: 1mole of substance = (6.023×10 23) formula units

Q: Pls provide clear solution on B & C 1. The Freons are a class of compounds containing carbon,…

A: Molar mass of CH2FCF3=102.03g/mol In this molecule, C----> 2,H---->2,F--->4 Atomic mass of…

Q: 2C2H2(g)+5O2(g)⟶Δ4CO2(g)+2H2O(g) How many moles of C2H2 are required to produce 0.63 mol of H2O?

A: Given reaction :-   2C2H2(g) + 5O2(g) ⟶ 4CO2(g) + 2H2O(g) reaction is balanced.

Q: In 360 grams of Glucose(CGH1206) the number of moles of Glucose present is O 1 O 4 O 3 O 2

A: * Number of moles of substance = Mass of substance/molar mass of substance By using this we can…

Q: Assume vit K1 makes up 0.052% ( by mass) of cilantro. How many moles of vit K1 is there in your…

A: Vit K1 makes up 0.052% (by mass) of cilantro. 1 tsp of cilantro is used here and volume of 1 tsp is…

Q: How many moles of AI can be produced from 10.87g of Ag? AI(NO3)3(s)+3Ag=AI+3AgNO3

A: In the given reaction, one mole of aluminum nitrate reacts with three moles of silver to form one…

Q: How many grams of N2 are needed to make 444 g of NBr3 ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ…

A:

Q: 2. How many grams of oxygen gas must be reacted with excess sulfur dioxide to produce 87.1 g of SO;?…

A:

Q: How many grams of water are produced by 1.0 moles of C3H8? C3H8 + 5 O2 → 3 CO2 + 4 H2O

A: 1.  Propane reacts with oxygen to forms carbon dioxide and water. The equation for the balanced…

Q: 3.B) Determine the number of moles and mass of Al(OH)3 produced.  Al2(SO3)3 + 6NAOH -> 3Na2SO3 +…

A: The part (b) is related with part (a), so for solving (b), information of part (a) should be…

Q: If 0.274 moles of a substance weighs 62.5 g, what is the molar mass of the substance, in units of…

A:

Q: Which of the following has the highest number of molecules? 1.0g F2 1.0g O2 1.0g Cl2 1.0g H2

A: One mole of a substance is equal to the mass of carbon-12 which contains 6.023 × 10²³…

Q: How many moles of NH3NH3 can be produced from 16.5 molmol of H2H2 and excess N2N2?

A: Moles of NH3 produced from 16.5 mol of H2 and excess N2 are to be calculated.

Q: What is the mole ratio of Hydrogen (H2) to Ammonia (NH3) in this balanced equation? N2(g) + 3H2(g)…

A: N2(g) + 3H2(g) -> 2NH3(g)

Q: C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O 180 g/mol       32 g/mol        44 g/mol       18 g/mol   How…

A: Given:    C6H12O6+6O2→   6CO2+6H2O  Molar mass⇒180g/mol  32 g/mol  Mass⇒360g

Q: . A compound with an empirical formula of C20H4 and a molar mass of 88 grams per mole. What is the…

A: 3) Given: Empirical formula = C2OH4  And molar mass = 88 g/mol.

Q: Flask A contains 1.00L of NH3 Flask 2 contains 1.00L of NO2 and flask 3 contains 1.00L of N2 which…

A:

Q: According to the following reaction, how many grams of hydrogen gas are necessary to form 0.506…

A: The question is about calculating the mass of Hydrogen gas necessary to form 0.506 moles of Ammonia…

Q: How many moles of MgCl2 are present in 78.3g of MgCl₂? O 0.822 moles O 7450 moles O 1.31 moles O4680…

A:

Q: True or False? One mole of molecular O2 = 6.02 x 1023 O2 molecules. Mass of O2 in 100g of CO2 =…

A:

Q: Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce…

A: This question can be solved using law of multiple proportions.

Q: Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H N and O.…

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

Q: How many moles of water are produced from 19.2 g of B2H6? (B:10.811 g/mol, H:1 g/mol, O:16 g/mol

A: Given chemical reaction: B2H6 + 3 O2 ----------> 2 HBO2 + 2 H2O Mass of B2H6 = 19.2 g  Molar mass…

Q: What mass, in grams, of C2H2 is needed to form 210.4 g of CO2? Assume excess oxygen.  2C2H2(g) +…

A: Given: 2C2H2(g) + 5O2(g)  →  4CO2(g) + 2H2O(g) Mass of CO2 = 210.4 g To find: Mass of C2H2 Solution:…

Q: Siven the unbalanced chemical equation, C5H12(1) + O2(g) → CO(g) + H20(1), which one of the pllowing…

A: The reaction given is, => C5H12 (l) + O2 (g) -------> CO (g) + H2O (l)

Q: a correct mol ratio for the relationship between hydrogen gas and ammonia in the following equation…

A: For determined of mol ratio first required a balance equation. The coefficient ratio of two…

Q: Using the initial mass 1.510 g and the molecular formula of the hydrate CuCl2​⋅2H2​O). Predict the…

A: Mass of compound = 1.510 g Mass of water produced on heating the compound = ?

Q: how many molecules of H2 are required to produce 15.0 g of H2O

A: 1) Reaction: 2H2+O2→2H2O 2) Mass of water = 15 g

Q: How many grams of O2 are required to produce 1.23 x 1024 molecules of water? 2H2 + O2 2H2O 131 g…

A:

Q: Calculate the number of moles of aluminum oxide in 6.83g Al2O3

A: Stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to…

Q: If mass of SO2 is 24g , calculate: 1.1. the molar mass of SO2 The number of mole of SO2 The number…

A: Given.  Mass of SO2 = 24 g  Molar mass of SO2 = To be determined  Atomic wt. Of Sulphur = 32.065…

Q: How many molecules are present in 45g of fluorine gas, F₂? 2.71 x 1025 1.03 x 1027 7.13 x 1023 1.97…

A:

Q: How many moles of Pb(SO4)2 are equivalent to 186.7 g of Pb(SO4)2 (Mw. 399.34 g/mol)?

A: Number of moles = mass /molar mass