9. How many hydrogen atoms are there in 500.0 L of water? (dH.0 = 1.00 g mL) %3D A: 3.34 x 1025 28

Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: The density of solid Fe is 7.87 g/cm³. How many atoms are present per cubic centimeter (cm³) of Fe?

A: a)  Density of Fe = 7.87 g/cm3  1 mol Fe = 56.0 g/mol  1 mol Fe = 6.023 × 1023 Fe atoms    The…

Q: 6. What is the percent by mass of nitrogen in ammonium carbonate? a. 14.53% b. 27.83% c. 29.16% d.…

A:

Q: question 4

A: Given information:Number of moles of CO(g) = 1.0 moleNumber of moles of CO2(g) = 1.0 mole

Q: (f) number of O atoms in 6.25 x 10-3 mol Al(NO3)3

A: Total number of oxygen atom = 3.39×1022 atoms

Q: • How many moles of Na Cl contain 3.49 x1025 There are ions? Z moles of ions per mele oE Nasl, cund…

A: 1 mole = 6.022×1023 [ Avogadro's number ] Anything which is in the number of 6.022×1023 is said to…

Q: OC) 5.06 x 1024 How many atoms of carbon are in 23.1 g of caffeine (C8H10N4O2)? A) 8.00 B) 7.16 x…

A: Formula of caffeine = C8H10N4O2  Mass of caffeine = 23.1 g  Molar mass of caffeine = 8(molar mass of…

Q: What is the mass percent N in C2H8N2? (a) 23.3% N(b) 16.6% N(c) 215% N(d) 46.6% N

A: Mass percent or percentage by weight is one of the concentration terms that indicates the mass of…

Q: 1. a.) How many moles of sodium in 0.46g of sodium? b.) How many atoms of sodium are in 0.46g of…

A: The number of moles (n) of a substance can be calculated as: n=Given massMolar mass······(1) One…

Q: 1) How many zinc (Zn) atoms are contained in 5.16 moles of Zn?

A: Mole is described as the amount of a substance which consist of  exactly the Avogadro number of…

Q: 2o dreps = I mi I drop=to mis0,08ML Mores H,u- Mass =05- a,77x103 MMall 18.02 Cle.088413 るってて。) If…

A: Given the number of water molecules to be lined up = 1.67*1021 molecules Given the distance of 1…

Q: 12. If that hamburger contains 3.1 x 10 moles (or 0.000 000 31 moles) of selenium, how many grams of…

A: Given, Moles of selenium = 3.1 × 10-7 moles Note: Atomic mass of selenium = 78.96 g/mol Mass (in…

Q: 5) 0.7971 g of molecule, X, is found to contain 3.0 x 1022 atoms. Deduce the identity of X. Given N…

A: Given: Mass of X2 = 0.7971 g Atoms of X2 = 3.0×1022 NA = 6.023×1023 mol-1

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL.(a) What mass…

A:

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL. 1. What mass…

A: Given : Mass of sodium monofluorophosphate i.e Na2PO3F = 0.76 g

Q: - How many grams of oxygen is presentin5.764 X 102'molecules of carbon nonoxide? O None of the above…

A:

Q: Part B. 4. Volume of a Drop of Water Number of drops (10) 10 Mass of flask + watchgiass + 10 drops…

A: A numerical problem based on dimensional analysis, which is to be accomplished.

Q: What is the percent by mass of chromium (atomic mass = 52.00 g/mol) in Cr2S3 (mm = 200.20 g/mol)?…

A:

Q: One mole of oxygen molecule (O2) contains how many atoms of oxygen? O a. 6.022 x 1023 O b. 6.022 x…

A: Applying concept of moles and avogadro number.

Q: Be sure to answer all parts. What is the mass, in g, of 1.28 x 10 silver (Ag) atoms? Enter your…

A: Given, atoms of Ag = 1.28 x 1011 atoms Molar mass of Ag = 107.87 g/mol

Q: An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in the…

A:

Q: Citric acid, C HO,, is found in many fruits How many H atoms are contained in 0.1g of citric acid…

A: Given data contains, Mass of citric acid is 0.1 g. Molar mass of citric acid is 192.124 g/mol. The…

Q: How do I calculate the numner of moles contained in this sample? 1.06 x 10 (to the 25th power) atoms…

A:

Q: н Enter the mass percent of CHF3 in the visualization. MM[CHF3]=70.01 g/mol, MM[C2H6]=30.07 g/mol,…

A:

Q: How many oxygen atoms are there in 3.15 g of Al2(S208)3 (MW AI2(S208)3 = 330.34 amu) O a. 3.01 X…

A: Given that : Molecular weight of Al2(S2O8)3 = 630.34 amu or g/mol Mass of Al2(S2O8)3 = 3.15 g Number…

Q: If the m. Wt. of BaSO4 = 233.42 g/mol and m. Wt. of Na(SO4)2= 140.02 g/mol and %3D wt of…

A: Given that M.W of BaSO4 = 233.42 g/mole  M.W of Na2SO4 = 140.02 g/mole  Weight of Na2SO4 = 1.5 g

Q: 2. A given sample of caffeine, C,II,N,0, has 0.23 g of carbon atoms in it. Hle nitrogen atoms are…

A: Mass of C atom = 2.3 g  Molar mass(MM) of C = 12 g/mol Moles of C = mass/MM          = 2.3/12   =…

Q: Vitamin A has the molecular formula C20H300. How many carbon atoms are in 6.02 x 1023 molecules vit…

A: As molecular formula of vitamin A is C20H30O . Thus in one vitamin A molecule  has 20 carbon atoms .…

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: Number of atoms of C in 10 moles of CAH10 are: O 24.09x10^23 O 240.88x10^23 O 4.15x10^23 O…

A:

Q: 6. A compound containing sium and 1.527 g of nitrc

A: Empirical formula represents the simplest reduced whole number ratio of atoms of all the elements…

Q: A sample of carbon disulfide contains 2.25 x 1024 molecules. How many moles of sulfur atoms does the…

A: No. of molecules of CS2                        mass of CS2       6.022×1023…

Q: Part 3 28.4 mL of 0.403 M (NH4)2CO3 mol NH4*: O 11.4 0.0228 O 11400 O 0.0114

A:

Q: 1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in the…

A:

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: Citric acid, C,H,0, is found in many fruits How many C atoms are contained in 0.1g of the acid?…

A:

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: them from smallest to largest by mass. 0.75 mol H20(liq) 7.0 g N2(g) 0.55 mol Ar(g) 0.45 mol N2(g)

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: 5) How many moles are in 54.4 grams of water (H,O)? 6) How many grams would 8.88 x 10 atoms of NaCl…

A:

Q: How many C atoms are there in a 41.1 gram sample of C ? atoms

A:

Q: 19 How many nitrogen atoms are present in 25.00 g of N,O,?

A:

Q: Which of the following contains the MOST atoms? You shouldn't need to do a calculation here. A. 10.0…

A: Generally the no. of atoms present in some sample is obtained by dividing the sample weight by the…

Q: 11. How many hydrogen atoms are in 65.2 grams of Ca(C,H,O2)2?

A: Given: The mass of Ca(C2H3O2)2., (m)=65.2 g The molar mass of Ca(C2H3O2)2, (M) =  158.1660 g/mol.

Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: Citric acid, C,H,0, is found in many fruits How many C atoms are contained in 0.1g of the acid?…

A:

Q: Which contains more atoms? 10g of He 10g of H2O 10g of Ca

A: Given, 10g of He 10g of H2O 10g of Ca

Q: In order to determine the formula of CoCl.xH;O, a student heated 0.476 g of hydrate. The mass of…

A: First of all we have to calculate the weight of water that goes off after being heated.  Convert…

Q: A certain organic compound has the formula C9H11O3. A sample of this compound weighs 3.4 grams.…

A: The formula of the organic compound is C9H11O3. The molecular mass of the organic compound=9 x 12 +…

Q: A 10 gram sample of which substance contains the greatest amount of hydrogen atoms A. 10gCH4…

A: Molar mass of substance can be defined as the sum of  atomic masses of all atoms present in that…

Q: . How many oxygen atoms are in 328g Ca (NO3) 2.

A: 12 oxygen atoms are in 328g Ca (NO3) 2. Formula =Ca(NO3)2=Ca(NO3)2 Molar mass…

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.