What is the mass percentage of each element in the compound Al2O3? Enter the percent mass of aluminum and the percent mass of oxygen, respectively, separated by a comma.

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Mass percent expresses the solute concentration in any mixture. The division of weight of dissolved…

Q: How many grams of oxygen is in 9.10 x 1020 molecules of N2O5?

A: Number of molecules of N2O5 = 9.10 × 1020 molecules. Mass of oxygen = ?

Q: Calculate the mass percent of H in B4H9CI. %

A:

Q: Calculate the mass in grams of a sample of NO2 that contains 1.000 x 10^25 molecules.

A:

Q: How many moles of oxygen atoms are there in (6.58x10^2) grams of P4O6

A: Molar mass of P4O6= 219.88g/molGiven mass of P4O6 = 6.58×102 gNumber of moles of P4O6= given…

Q: Calculate the mass in grams of 1.10 x 104 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A: Mass of H2S in grams = 6.210 g

Q: How many H atoms are there in (2.22x10^2) grams of NH3?

A: The answer to the following question is given as:

Q: late the mass in grams of a sample of NO2 that contains 1.000 x 1025 molecules.

A:

Q: What is the mass (in grams) of 1.25 x 10^22 molecules of SeO2?

A: 1 mole of any species contains Avogadro's number i.e. 6.023 × 1023 of its constituent particles…

Q: Calculate the mass in grams of 1.10 x 1024 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A:

Q: What is the mass, in grams, of 9.71×1024 molecules of methanol (CH3OH)?

A: Introduction :  We need to calculate mass in grams for CH3OH . First convert molecules into moles .

Q: What is the mass in grams of 4.59 × 10²⁵ molecules of I₂?

A:

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: Using the density of argon= 1.54 g/L, how many argon atoms are present in a room with dimensions of…

A: To solve this problem first we calculate the volume of room and then we will calculate the mass of…

Q: For the compound Ca10(PO4)6(OH)2, what is the molar mass? How many atoms of P are in 35.00 grams of…

A: For molar mass of compound, we should know molar mass of its constituents.

Q: What mass of ammonia gas (NH3) contains 2.8*10^24 hydrogen atoms?

A:

Q: Calculate the percentage composition for PCI3. Mass percentage of phosphorus = Mass percentage of…

A: Formula : PCl5 Molar mass of P = 31 g/mol Molar mass of Cl = 35.5g/mol  Molar mass of PCl5 = P +…

Q: Calculate the mass in grams of 6.12 mole Cu(NO3)2.

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: A sugar crystal contains approximately 2.0×10^17 sucrose (C12H22O11C12H22O11) molecules. What is the…

A:

Q: Calculate the mass in grams of 4.46×1024 molecules of propylamine. The chemical formula for…

A: Avogadro constant = 6.022 × 10²³ /mol The moles of propylamine can be calculated asNo. of moles of…

Q: Chromium metal is obtained by heating chromium(III) oxide with carbon. Calculate the mass percent of…

A:

Q: Turquoise has the following chemical formula: CuAl5(PO4)4(OH)8 4H2O. Calculate the mass percent of…

A: Mass percentage of any component may be calculated as :               Mass %ge=mass of that…

Q: W

A: A mole can be defined as a unit for the amount of substance. Formula for number of moles:

Q: 2. What is the mass (in grams) of 7.11 X 102 molecules of tetraphosphorous trisulfide?

A: Given, number of molecules = 7.11×1022 Avogadro's constant = 6.022×1023 molecules.mole-1

Q: Acetic acid (HC2H3O2) is the active ingredient in vinegar. Calculate the mass percent composition of…

A: The way of representation of concentration of an element in a compound or a component of a mixture…

Q: How many carbon atoms are in 8.94 mL of C3H6O? 1 mole 6.02 x 1023 atoms 1 mL = %3D 0.883 g atoms of…

A: Given for C3H6O volume (V) = 8.94 mL 1 mL = 0.883 g So first calculate the mass of C3H6O mass =…

Q: What is the molecular formula for a substance that in 1.00 mole of sample contains, 1.00 mole of C,…

A:

Q: What is the mass, in grams, of 9.15 x 1024 molecules of methanol (CH3OH)?

A: Given that, number of molecules of methanol =  9.15 x 1024

Q: What is the mass in grams of 5.57 × 10¹⁵ molecules of SO₂?

A: We know that , 1 mole = 6.023x1023molecules/atoms/ions.1 mole = molar mass of molecule .6.023x1023…

Q: A balloon filled with neon gas, Ne, contains 9.870 x 1025 atoms. Use the molar mass of neon, 20.18…

A: Given,number of atoms of neon ( Ne ) gas = 9.870 x 1025 atomsmolar mass of Ne = 20.18 g/mol

Q: Calculate the mass percent of chlorine in Mg(ClO4)2.

A: We know that, Molar mass of Cl = 35.45 g/mol Molar mass of Mg(ClO4)2 = 223.206 g/mol

Q: Manganese(Mn) is a transition element essential for the growth of bones. What is the mass in grams…

A: Manganese is represented by atomic symbol Mn and it is a transition element. Also, it can be said…

Q: This is the chemical formula for chromium(III) nitrate: CrNO33. Calculate the mass percent of…

A: The Mass Percentage of Nitrogen in Chromium (III) Nitrate can be calculated as follows -

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.