25.0g of Co2 contain how many oxygen atoms (Molar mass of CO2 = 44.01 g.mol-1) A 1.00x1024 B 6.80x1023 C 6.02x1023 D 3.40 x1023

Q: How many atoms are present in a 0.04545 mol sample of Cu? 3.654x10-23 Cu atoms 4.545 x 1023 Cu atoms…

A:

Q: Lipitor (C33H35FN,O5) is an important pharmaceutical compound for cardiovascular health. The molar…

A: Given :-  Molar mass of lipitor = 558.63 g/mol  Mass of lipitor in a dose = 0.0100 g  To calculate…

Q: Combustion of 7.73 mg of an unknown substance yields 13.3 mg CO2 and 4.06 mg H;O. The unknown…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 7.73 mg = 0.00773 g…

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: If you have 42.5 moles of glucose (C6H₁206) approximately how many grams do you have? #3

A:

Q: How many molecules are in 0.200 g CO2? C= 12.01 g/mole and O = 16.00 g/mole

A:

Q: What mass of N2 is needed to produce 10.00 g N3F? 3N2 + F2 ⎯→ 2N3F

A: Number of moles present in 10.00 g N3F is determined as shown below: No.of moles=massMolar massNo.of…

Q: Liquid methane (CH4). and liquid oxygen (02) are used in some rocket engines. What is the mass of…

A: Given  Mass of CH4   = 500000 gram Mass of O2    = 150000 gram  Mass of CO2  = ?

Q: How many H atoms are present in 8.0 g of CH4? O 3.0 x 1023 O 8.3 x 10-25 O 3.7 x 1023 O 1.2 x 1024 O…

A:

Q: Chalk is mostly made of calcium carbonate, CaCO3. If it took 48.6 g of chalk to write your name on…

A: Option A will be correct.

Q: nsider the following reaction:                 3 Hg(OH)2  +  2 H3PO4    Hg3(PO4)2  +  6 H2O…

A: Moe concept is being used to solve such problems. The mole concept was proposed by Avogadro. It…

Q: b. 8 HNO3 + 3 Cu 3 Cu(NO3)2 + 4 H2O + 2 NO -> 3.2 g IMoICh 3.29(4x 63. 55 gcu Molar Mass

A: Given: Mass of Cu = 3.2 g Molar mass of Cu = 63.546 g/mol Molar mass of HNO3 = 63.01  g/mol Molar…

Q: C6H8      +     O2      ------à     CO2      +      H2O How many moles of O2 are needed to form 60…

A:

Q: 3.Aluminum Oxide is formed when aluminum combines with oxygen gas in the air. Determine the amount…

A: Given aluminum oxide is formed when aluminum combines with oxygengas in air.Given the amount of…

Q: 9. How many sodium ions are contained in 1.64 g of Na3PO4? The molar mass of Na₂SO3 is 163.94 g/mol.…

A:

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: Complete combustion of a 1.448 g sample of a hydrocarbon (only carbon and hydrogen present),…

A: Given -> Weight of hydrocarbon = 1.448 gm Weight of CO2 = 3.128 gm Weight of H2O = 1.121 gm

Q: . How many moles of Al(C 2 H 3 O 2 ) 3 contain 19mol O ? 6. Determine the % composition by mass of…

A:

Q: How many moles of sodium azide (NaN3) are required to produce 0.23

A:

Q: An alloy is found to be 41.8% Zn and the rest is Cu. If 15.0 g of Cu is added to 45.0 g of This…

A: Mass of the alloy = 45g% of copper in the alloy = (100-41.8) = 58.2%% of zinc in the alloy =…

Q: Calculate the molar mass of the following substances. Molar Mass = b. Mg3(PO4)2 Molar Mass = c.…

A: Molar mass of given compounds can be calculated as:

Q: How many grams of NO2 are needed to make 1.5 g of N2?

A: Given :- mass of N2 = 1.5 g  To calculate :- mass of NO2 (in grams)

Q: Combustion of 8.45 mg of an unknown substance yields 14.0 mg CO2 and 7.08 mg H20. The unknown…

A: We have to calculate the % of each element in substance.

Q: Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of 46.06 g/mol and…

A:

Q: When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2A1(s) +…

A: Answer

Q: How many formula units are present in 500.0 g of Substance A. (molar mass 278.2g/mol) O 1.082 x 1024…

A: Given : Mass of substance = 500.0 g And molar mass of substance = 278.2 g/mol.

Q: Calculate the grams of H2 needed to make 150.0 g of NH3. Use the balanced equation below. All…

A:

Q: Molar Mass Toles ole:Mole hich reactant was the limiting reactant? hat was the theoretical yield?…

A: The question is based on the concept of Reaction Stoichiometry.   We have to identify the limiting…

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A:

Q: If you are given 65.2 grams of CO2, how many moles is this? (MW of CO2 = 44.01 g/mol) O 1.48 mol O…

A: mole of any species is defined as when given mass is divided by molar mass.

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A:

Q: Using the balanced equation, N 2( g) + O 2( g) 2 NO( g), determine the limiting reactant under the…

A: Given balanced equation,     N2(g) + O2(g) -->2 NO(g) a. 12.5 g N2 and 15.0 g O2  b. 14.0 g N2…

Q: A Moving to another question will save this response. Question 7 Consider the following balanced…

A:

Q: 2. Consider the following reaction: 3Si 2N SiN a. When 21.44 moles of Si react with 17.62 moles of…

A: The given data: The number of moles of Si = 21.44 moles The number of moles of N2 = 17.62 moles.  To…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.