Formaldehyde has the formula CH2O. How many molecules are there in 0.55 g of formaldehyde?

Q: C. What is the mass (in grams) of 5.03 × 1022 molecules of CO2 molecules?

A: Number of molecules of any species is given by, => Number of molecules = moles X Avogadro's…

Q: How many molecules are there in 2.30 grams of NH3?

A: Number of molecules = moles X Avogadro's number  And moles = mass / molar mass  Avogadro's number =…

Q: 4. Many common dry-chemical fi re extinguishers contain ammonium phosphate, (NH4)3PO4(s), as their…

A:

Q: How many atoms of sulfur are in 279 g of Na₂S₂O₃ ?

A: Given , Mass = 279 g Molar mass of Na₂S₂O₃= 158.11 g/mol

Q: How many moles of nitrogen atoms are there in 1.64 x 1023 molecules of dinitrogen trichloride,…

A: Mole can be defined as a standard unit for measuring large quantities of very small and entities…

Q: What is the mass, in grams, of 9.44 x 1024 molecules of methanol (CH,OH) ?

A:

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

A:

Q: 7. How many molecules are there in 24.0 g of ethylene glycol, HO(CH)OH?

A: The number of moles is defined as the ratio of the mass of a substance to its molar mass. Number of…

Q: What is the mass, in grams, of 9.94 x 104 molecules of methanol (CH, OH) ?

A: Given molecules of methanol is 9.94 x 1024 It is known that 1 mole of  methanol has 6.023 × 1023…

Q: hat is the mass in kilograms of 5.6 x 1027 molecules of carbon tetraiodide

A: The number of moles is the amount of an atom present in the compound containing that atom. It is…

Q: 3) How many total atoms are there in 34.2 g of CH3CO2H?

A: Given, amount or mass of CH3COOH =34.2 gwe are asked to calculate the total number of atoms in 34.2…

Q: What is the mass of 1.67 x 10^15 atoms on MN, 6.45 x 10^23 atoms of N, and 3.40 x 10^25 atoms of C…

A: Given :-  number of Mn atoms = 1.67 × 1015 atoms  number of N atoms = 6.45 × 1023 atoms  Number of C…

Q: how many atoms of carbon are in a 312.5 mg sample of C^3H^8?

A: Avogadro's number gives the number of atom or particle present in 1 mole of any substance.

Q: 3.112 The carat is the unit of mass used by jewelers. One caratis exactly 200 mg. How many carbon…

A: One carat is equal to 200 mg. the amount of diamond is 2 carat. The mass of diamond from carat to g…

Q: Find the mass (in grams) 7.7 X 10 molecules of NO,

A: Given :-  Number of molecules of NO2 = 7.7 x 1023 molecules  To calculate :- mass of NO2 in grams

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: How many molecules are there in 122 grams of NO2?

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: How many grams of hydrogen are there in 55.1 g of CH3(CH2)4OH?

A: Given: Mass of CH3(CH2)4OH is 55.1 g Known: Molar mass of C = 12.01 g/mol Molar mass of H = 1.008…

Q: What is the mass of 2.9 × 10^26 molecules of dinitrogen pentoxide, N2O5(g)?

A: Molecules of N2O5 = 2.9 x 1026

Q: How many molecules of ammonia would there be in 22.7 grams of ammonia, NH3?

A: Given: Mass of ammonia = 22.7 g

Q: What is the mass, in grams, of 9.53 x 10" molecules of methanol (CH, OH) ? mass:

A:

Q: How many moles of zinc, Zn, are in 1.35×10^24 Zn atoms?

A: Question is based on mole concept. We have to calculate number of moles of zinc.

Q: If the molar mass of boric acid, H3BO3, is 61.83 g/mol, how many grams would be contained in 1.32…

A: The answer is given as follows

Q: How many molecules of carbon tetrafluoride, CF4, are in 176 grams of CF4?

A: We know 1 mol of any compound contains Avogadro's number of molecules. That is 6.022× 1023…

Q: How many atoms would there be in 6.18x106 g of chlorine, Cl2?

A: Given, Mass of chlorine gas (Cl2) = 6.18 × 106 g Number of atoms are there in 6.18 × 106 g of…

Q: How many grams of carbon are in 1.13 x 1025 molecules of (carbon dixide) CO2 ?

A: Given, Number of molecules of CO2 = 1.13 x 1025  Mass of Carbon (C) = ? Note: molar mass of C =…

Q: How many H atoms are there in (3.80x10^2) grams of H2O?

A: Number of moles = Mass/Molar mass Number of atoms in 1 mole = 6.0224 x 1023 Molar mass of water =…

Q: How many molecules are there in 1.2 moles of Cu (NO3)2?

A:

Q: The chlorophyll-a molecule (C55H72MgN4O5) is important in photosynthesis. (a) Determine its…

A: a) Since molecular mass = sum of ( Atomic mass of atoms X number of atoms in the molecule)  Hence…

Q: Considering ZnCO3 has a molar mass of 125.40 g/mol and Avogadro's number is 6.022 x 10^23, what mass…

A:

Q: 4. How many grams of carbon are in 36.2 g of C6H12O6?

A: By calculating molar masses of C6H12O6 and mass carbon atoms we can solve this problem.

Q: How many atoms are in 159 g159 g of calcium?

A:

Q: 5. How many formula units are there in 90.0 g of Mg(OH)2?

A: No of formula unit can be calculated by dividing the given weight and weight of one formula unit.

Q: What is the mass in grams of 2.06 x 10²³ atoms of potassium, K?

A: Atoms of potassium = 2.06 × 1023  Molar mass of potassium = 39.1 g/mol  Avogadro's number = 6.022 ×…

Q: Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of Prevacid…

A:

Q: What is the mass of 7.004 x 10" molecules of calcium chloride? How many moles are in 9.83 x 10-…

A: Note: According to the rules we can answer only first three parts. Given: Molecules of calcium…

Q: 7. How many grams are in 2.38 x 1022 molecules of ammonia (NH,)?

A:

Q: Find the mass (in grams) 8.8 X 1023 molecules of NO,

A:

Q: Calculate the mass in grams of 2.84 x 1024 molecules of methanol. The chemical formula for methanol…

A: Given  Number of molecules of methanol = 2.84 × 1024 molecules  Chemical Formula of methanol      =…

Q: 13) How many moles are there in 4.50 x 1022 molecules of CH,?

A: 13.  Number of particles = 4.50 x 1022 molecules Number of atoms = Number of moles of CH4 x NA Here…

Q: How many moles of oxygen atoms are there in 3.95x1024 molecules of dinitrogen tetroxide (N2O4)?

A: In the dinitrogen tetroxide molecule, the stoichiometric ratio of nitrogen to oxygen is 2:4

Q: 2.845 x 1012 potassium ions equals how many moles of potassium ions?

A: 1 mol of potassium ions equal 6.022 ×1023ions    16.022×1023moles of potassium ions equal 1 ion

Q: What is the mass grams that are in 6.80 x 1025 molecules of I2 ?

A: Mass of the substance is called molar mass. 1 mole of a substance contains Avogadro's number of…

Q: How many grams of Al2(CrO4)3 will contain 5.17 x 1024 oxygen atoms?

A:

Q: If you have 168 grams of C6H12O6 (glucose), how many moles of glucose do you have? How many…

A: The number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance is…

Q: How many molecules are there in 42.0 g of nitrogen gas, N2?

A: We know that : 1 mole of any substance has 6.023 x 1023 molecules Given that : Mass of N2 = 42.0 g…

Q: The formula for carbon tetrafluoride is CF4   A.How many molecules are in 4.19 grams of carbon…

A: The formula for carbon tetrafluoride is CF4 Molar mass of CF4 = 88 g mol-1

Q: The indigo dye used to color blue jeans has the formula C6H1ON2O2. How many molecules of indigo are…

A: Given :- amount of C6H10N2O2 = 50.0 g  To calculate :- total number of C6H10N2O2 molecules

Q: How many molecules are there in 7.28 moles of carbon tetrachloride, CCI4?

A: Given,  7.28 mol CCl4

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…

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.