What is the mass percentage of O in C₃H₈O₂? Provide an answer to two decimal places.

Q: It is estimated that we breathe around 5.0 x 1021 molecules of 0, in a single breath. What mass of…

A: Given: Molecules of O2 in a single breath = 5.0 × 1021. Molar mass of O2 = 32 g/mol

Q: What is the mass in grams of 7.54 x 1025 molecules of Br2?

A:

Q: What is the mass percentage of O in CO₂? Provide an answer to two decimal places.

A: Molecular weight of C and O are 12.0107 gm/mol and 15.999 gm/mol respectively.  Hence, molecular…

Q: What is the mass percentage

A:

Q: Determine the quantity of moles of hydrogen in 3.06 x 103g of glycine, C:H$NO:?

A: The number of moles is calculated as: Moles=Given massMolar mass......(1) The molar mass of glycine…

Q: The ratio of Molar masses of C6H1206 and Water is O 180:10 O 342:18 O 1:10 O 10:1

A: Molar mass: It is defined as the mass in grams of one mole of any substances. Units of molar mass…

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: Which has the larger percent by mass of sulfur, H 2 S O 3 or H 2 S 2 O 8 ?

A: Molar mass of H2SO3=? Molar mass of H2SO3=(Number of H-atom×mass of H-atom)+ +(Number of…

Q: percentage by mass

A:

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

A:

Q: How many equivalents of PO43 are there in 6.00 mol of Mg3(PO4)2 ?

A:

Q: Calculate the mass (in g) of 1.2 x 1024 atoms of molybdenum, Mo.

A: using mole concept , easily determination of atoms , molecules and ions possible.

Q: Which element comprising Ma(OH)2 has the highest percentage by mass?

A: The compound given is Mg(OH)2. Assuming 1 mole of Mg(OH)2.

Q: What is the mass percentage of O in CO2? Provide an answer to two decimal places.

A: Given,  The mass percentage of O in CO2 is:

Q: What mass of water is contained in a 5.398_g sample of Na22CO3.10H2O?

A: The mass of the sample is 5.398 g.The molar mass of Na2CO3.10H2O is 286 g/mol.The mass of water in…

Q: Determined the mass percentage of hydrogen in CH4 and C4H10?

A: Molar mass is defined as average mass of atoms present in the chemical formula. It is the sum of the…

Q: What is the mass percentage of C in morphine, C1,H19NO,?

A: The molar mass of morphine is 285.34 g⋅mol−1.

Q: What is the mass percentage of O in C3H8O2?

A:

Q: In one analysis, the density of ozone in an air sample was found to be 5.00  10−8 mol/L. What is the…

A:

Q: What mass of Fe is needed to produce 6 moles of Fe2O3?

A: The mass of 6.022 x 1023molecules/atoms of a substance is equal to its gram molecular mass or gram…

Q: how many moles of Al2O3 can be formed by 19.2 grams of O2?

A: We will consider only oxygen moles not aluminium moles assume aluminium amount is in excess.

Q: If the decomposition of a sample of KCIO3 produces 3.29 O2 what was the mass (g) of the original…

A: The decomposition of KClO3 in presence of heat give product KCl and O2. Hence,the chemical reaction…

Q: What is the mass percentage of Al in a piece of metal with 90.6 g of Al in a 162 g sample?

A:

Q: A sample of gas mixture from a neon sign contains 5.12 x 10- mol Ne and 4.40 x 10- mol Kr. What are…

A: Mass percentage is the ratio of mass of a substance to the mass of mixture, multiplied by 100. Fir…

Q: What is the mass percentage of Na in Na2SO3?

A: To calculate the mass percent of an element in a compound, we divide the mass of the element in 1…

Q: What is the mass in grams of 1.47 x 1015 molecules of NO?

A: Given : The number of molecules of NO=1.47 x 1015 The molar mass of NO=30.01 g/mol 30.01 g is the…

Q: Calculate the mass (in kilograms) of chlorine in 25 kg of chlorofluorocarbon (CFC). CF2Cl2

A:

Q: What is the mass in grams of 8.51 moles of Al2O3?

A: According to the mole concept, one mole of any substance related as - (1) 1 mole of the Substance =…

Q: Which is the correct mass percentage of hydrogen in acetamide, C₂H₅NO?

A:

Q: What is the mass percentage of O in C3H,O,?

A: The mass percentage of an element is a one of the way to express the amount of element in the…

Q: About how many MOLES of aluminum are present in 152.89 grams of Al2O3?

A: Moles of a compound=given mass of the compoundmolar mass of the compoundMolar mass of Al2O3 is…

Q: For the reaction N, + 3H, 2NH, what is the Mole ratio of nitrogen to hydrogen? t. Mole ratio of…

A: In a balanced chemical equation , the stoichiometric coefficients of reactants and products…

Q: What is the mass in grams of 4.10 x 102° molecules of Br2?

A:

Q: What is the mass, in grams, of 7.70 * 1020 molecules ofcaffeine, C8H10N4O2?

A: The number of molecules of caffeine is 7.70×10 20 molecules Avogadro’s number is 6.02×10 23…

Q: If 1.50 moles of nitrogen gas reacts with an excess of hydrogen gas, what mass of ammonia would be…

A: The balanced reaction taking place is given as, => N2 + 3 H2 → 2 NH3

Q: what is the mass percentage of C in hydrochlorothiazide, C7H8ClN3O4S2?

A: Mass percentage=Mass of particular speciesTotal massx100Hydrochlorothiazide molecular…

Q: What is the mass (in g) of 3.47 moles of Mg(OH)2?

A: Given the moles of Mg(OH)2 = 3.47 mol In order to find mass, we have to calculated the molar mass of…

Q: In the certain hydrated salt MSO3⋅4H2O, the mass percentage of H2O is 44.71%.   Identify the element…

A: Mass percent is given by the mass of the molecule/atom by total mass multiplied by 100.

Q: What is the mass percentage of C in CH;CH,OH? 52.144 % 3.

A: The given question is based on the knowledge of the determination of the empirical formula of the…

Q: What is the mass in grams of 5.98 x 1015 molecules of CS2?

A: Given is,  molecules of CS2 = 5.98×10^15 We know , Molar mass of CS2=76.139 g/mol Avogadro's number…

Q: Phosgene, a substance used in poisonous gas warfare during World War I, is so named because it was…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A sample of gas mixture from a neon sign contains 3.32 x 10-2 mol Ne and 4.65 x 10-2 mol Kr. What…

A: Mol of Ne = 3.32 x 10 -2 mol Mol of Kr = 4.65 x102 mol

Q: How many moles of CS2 make up 2.45 x 1025 molecules of CS2?

A:

Q: Calculate the mass percentage of chlorine in trichlorobenzene, C6H3Cl3.

A:

Q: What is the mass in grams of 3.86 x 1025 molecules of N2?

A: Mole concept :-  1 mole = 6.022×1023 (Avogadro's number)  The mass of 6.022×1023 molecules of a…

Q: What is the mass percent of aluminum in Al(NO3)3 • 9H2O?

A: The compound given is Al(NO3)3•9H2O.

Q: What is the mass percentage of each element in the compound Al2O3? Enter the percent mass of…

A: Given,  The compound Al2O3

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.