A compound has an empirical formula of C 8H 17. If a sample of the compound contains 4.90 grams of carbon, how many grams of hydrogen does the sample contain?   1.86 g   1.14 g   0.411 g   2.43 g   0.874 g

Q: The molar masses and empirical formulas of several compounds containing carbon and chlorine are as…

A: given: 284.77 g/mol, CCl 131.39 g/mol, C2HCl3 181.44 g/mol, C2HCl   a) empirical mass of CCl =…

Q: A compound composed of lodine, Carbon, Hydrogen, and Oxygen has the following composition by mass:…

A:

Q: How many atoms of silver are in a bracelet that weighs 34.0 g? O 1.1 x 1023 O 1.1 x 106 O 1.9 x 1023…

A: We have to calculate the number of atoms.

Q: What is the mass, in grams, of 8.55x1021 iron atoms? O 11.9g O 0.793 g O 1.26g 55.7g

A: Given: Number of iron atoms = 8.55 × 1021 atoms.

Q: How many atoms are in 1 mole of calcium atoms? 6.02 x 10-23 6.02 x 1023 6.02 1

A: One mole of any substance contains 6.022×1023 particles in it.

Q: What is the mass of one-half mole of SO2? a. 8 g b. 12 g c. 24 g d. 32 g How many grams are there in…

A: (15) The mass and moles of the substance are related to each other as;         Moles =MassMolar mass…

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: Calculation of mass in 8.94 mL: 1 mL=0.883 g8.94 mL=0.883 g1 mL×8.94 mL=7.894 g

Q: 2. If the mass of H4X3 is 40 g, then X must represe (1) O (2) CI (3) Kr (4) C

A:

Q: he amounts of gold (Au) in the crowns of three members of the royal family of King Midas are shown…

A: 1mole of a substance contains Avogadros's number of atoms( 6.022×1023).

Q: How many grams are in 2.3 ×10²² molecules of Ca3? Atomic weight of Ca= 40.08

A: Molecules of Ca =  2.3 ×10²² Atomic weight of Ca = 40.08

Q: How many moles of calcium atoms do you have if you have 8.99 x 1021 atoms of calcium. (The mass of…

A:

Q: What mass of cerussite, PbCO3, would contain 35.0 grams of lead? (a) 51.7 g (b) 42.4 g (c) 35.6 g…

A:

Q: How many moles of calcium atoms do you have if you have 4.98 x 10^21 atoms of calcium. (The mass of…

A:

Q: A drop of water has a volume of approximately 6×10−2 mL . How many water molecules does it contain?…

A: Relation between mass and number of molecules is:

Q: 2. Find the mass (in grams) of 3.9 X 102 molecules of CO, 3.9 X 1023

A: The molecular mass of carbon dioxide is 44.01g/mol. We know that 1 mole of any substance contains…

Q: A compound has an empirical formula of C 2H 3. If a sample of the compound contains 4.36 grams of…

A: Empirical Formula :- It is the simplest ratio of number of atoms present in a compound. The ratio is…

Q: A 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022…

A:

Q: A compound has an empirical formula of C 8H 15. If a sample of the compound contains 3.89 grams of…

A:

Q: Which of the following is equal to exactly 1 mole of atoms?     6.00 grams of carbon     31.93…

A: According to the mole concept , a mole is a measurement unit of any Substance in which particular…

Q: Phosphorus has the molecular formula P4, and sulfur has the molecular formula S8. How many grams of…

A: Given Number of molecules of P4 = number of molecules of S8 moles of P4 = moles of S8   mass of…

Q: A sample of a compound was found to contain 54 grams of aluminum, 96 grams of oxygen, and 6 grams of…

A:

Q: How many grams of platinum (Pt) contain the same number of atoms as 5.0 g of lithium (Li)? О а. 0.18…

A: Given, Mass of lithium (Li) = 5.0 g Mass (in grams) of platinum (Pt) contain the same number of…

Q: 1. Calculate the mass of each sample. a. 1.05 x 10 26 atoms of neon, Ne(g) b. 8.72 x 1021 molecules…

A:

Q: A compound composed of 3.3% H, 19.3% C, and 77.4% O3.3% H, 19.3% C, and 77.4% O has a molar mass of…

A: The considered compound has an approximate molar mass of 60 g/mol.

Q: How many moles of calcium atoms do you have if you have 3.39 x 1021 atoms of calcium. (The mass of…

A: Calculation of moles of Calcium atom: The given atoms of Calcium = 3.39×1021 atoms The mass of one…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 87.3 g of carbon. Calculate the mass of the…

A: Given that: Mass of carbon = 87.3 g Mass of trifluoroacetic acid = ?

Q: How many atoms are in 45.6 g Li

A: Given, Mass of lithium (Li) = 45.6 g Number of atoms are in 45.6 g Li = ? Note: Atomic mass of of…

Q: An unknown compound contains nickel, phosphorus, and oxygen. When analyzed, a 100.0 g sample was…

A:

Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

Q: What is the amount, in moles, of each of the following substances? A)12.6 g Ar B)3.50 g Zn C)26.5…

A: Welcome to bartleby !

Q: A nanotechnology experiment requires 3.60x 1019 atoms of potassium. What is the mass of this sample?…

A: Given  number of atoms of potassium = 3.60 x 1019 atoms To find mass of this sample. Required data -…

Q: A compound is composed of 57.51 % carbon, 1.63% H, 18.89% N, 13.05 % O, and the remainder other…

A: Given , A compound contains 57.51 % carbon , 1.63 % H , 18.89 % N , 13.05 % O and remainder are…

Q: How many grams are contained in one equivalent of iron (iii) ion, Fe3+? A) 167.6g B) 55.85g C)…

A: The mass of iron present in one equivalent of iron (iii) ion, Fe3+ is calculated as,

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

A:

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1022…

A: Given that : The mass of N2O sample = 2.37 g Number of molecules of N2O = 3.24 x 1022

Q: Question attached

A: Given: Mass of calcium present in Calcium chloride is 20 g

Q: calculate the mass in grams of each of the following samples. 10,000,000,000 nitrogen molecules(N2)

A: Here we are asked to calculate the mass in grams of 10,000,000,000 =10×109 nitrogen molecules(N2)

Q: How many moles of calcium atoms do you have if you have 4.69 x 10 atoms of calcium. (The mass of one…

A: Given, number of atoms = 4.69*1021atoms

Q: A sample of C3H8 has 8.00×10^24 H atoms. How many carbon atoms does the sample contain?  What is…

A: Given :- number of H atoms = 8.00 × 1024 atoms  To be calculated :-  No. of C atoms in sample…

Q: How many moles of atoms are contained in the following? (d) 14.8 g CH3OH (e) 2.88 g Na2SO4…

A: Given: mass of CH3OH = 14.8 g mass of Na2SO4 = 2.88 g mass of ZnI2 = 4.20 lb = 1905.09g molar mass…

Q: What is the mass in grams of 4.50 x 10^20 particles of aluminum sulfate

A: Given: The number of particles=4.50 x 1020 Mass of aluminum sulfate =? The molar mass of aluminum…

Q: How many chlorine atoms are in 12.2 g of CCl4? (C: 12 g, Cl: 35.5 g)

A: Given : Mass of carbon tetrachloride (CCl4)=12.2 g The molar mass of carbon tetrachloride=12 x1 +…

Q: Determine the mass in grams of 5.36 x 10^21 atoms of chromium. (the mass of one mole of chromium is…

A:

Q: Calculate the percent by mass of each element in the following compounds: Calculate the mass percent…

A:

Q: Beryl (emerald) is a precious gemstone with the formula:  Be3Al2(SiO3)6.  MM Be3Al2(SiO3)6  =…

A: a. Given, 1.00 g of beryl

Q: A 1.98 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 2.71 x 1022…

A:

Q: Which of the following contains the same number of atoms as in 6.0 grams of carbon? O 6.0 grams of…

A: The correct answer is given below

Q: 9. What is the mass of one-half mole of SO2? а. 8 g с. 24 g b. 12 g d. 32 g 10. How many grams are…

A: We know ; Mole of compound =  Mass of compound/ Molar mass of compound     1 mole of substance has…

Q: The number of oxygen atoms in 20.18 grams of Al(NO3); is: O 1.712 x 1023 O 0.09474 5.135 x 1023 O…

A: molecular mass of Al(NO3)3 = 213g no of atoms in 1 mole Al( NO3)3 = 6.023X1023 X 6 atoms no of moles…

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.