Bismuth has a density of 9.808 g/cm3 at 25 degrees Celsius. Calculate the number of atoms of Bismuth in a cube with edges of 5.0 cm in length, and calculate the number of moles of Bismuth in the cube.

Q: The density of carbon tetrachloride is 1.59 g/mL. How many chlorine atoms are present in 55 mL of…

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Q: How many kilograms of NaCl contain 3.49 x 10 ions? There are 2 moles of ions per mole of NaCl, and 1…

A: Given  number of ions of NaCl= 3.49 x 1025 ions molar mass of NaCl = 58.5 g/mol 1 mole  = 6.022 x…

Q: i. How many atoms of oxygen are in 8.1 g CO,? j. How many atoms of hydrogen are in 5.0 g NH3?

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Q: The density of Bi at 25 °C is 9.808 g>cm3. How many Bi atoms are present in a cube of the element…

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Q: Moles In this experiment you will use grains of rice as an analogy for atoms and experience why…

A: The average mass per grain of rice is 0.017932 g. This mass per grain of rice is chosen due to its…

Q: 1.51x1022 atoms of iron, Fe.

A: 1 mol contains atoms or molecules equal to the Avagadro's number.  Avagadro's number = 6.022 × 1023…

Q: A solid circular cone made of pure platinum (density = 21.45 g/cm3) has a diameter of 2.75 cm and a…

A: Given information,    Diameter (d) = 2.75 cm so radius (r) = 1.375 cm     Density = 21.45 g/cm3…

Q: Calculate the mass (in g) of each sample.  5.73x10^20 SO3 molecules

A: Given:Number of molecules = 5.73x1020 molecules.Molar mass of SO3 = 80 g/mol.

Q: A given sample of a xenon fluoride compound contains molecules of a single type XeFn , where n is…

A: Given that 8 x 1020 molecules of XeFn weigh 0.225 g 6.022 x 1023  molecules of XeFn will weigh=6.022…

Q: A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The…

A: The minimum composition of elements is as follows: Mn=25%Al=6.3%C=0.65%Cr=5.5% The maximum…

Q: Which of the following pairs of compounds have the same empirical formula? a. acetylene, C2H2, and…

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Q: What is the mass in grams of 6.91x 1015 chromium atoms? Put your answer in box in scientific…

A: Given,No of atom of Cr= 6.91* 1015 We have to find out the mass of Cr in grams.

Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

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Q: One mole (molecular equivalent) of gold has a mass of 196.9655 g.  One mole of anything equals 6.022…

A: Given : Mass of gold (1 mole)= 196.9655 g  Diameter of gold = 3.58 × 10-10 m Block of gold of mass =…

Q: What amount, in moles, does this mass represent?

A: Number of moles = mass/molar mass  Molar mass of methanol is 32.04 g/mol

Q: Assume that the ratio of moles of Cl to moles of Cu are 1.84.  If we can represent the formula by…

A: The ratio of moles of any two substances in a balanced chemical reaction is called molar ratio.…

Q: 2-Calculate the number of atoms in each of the following masses:a.54.0 g of aluminum

A: Calculation of number of atoms.

Q: A sample of glucose, C6H12O6, contains 1.250 x1021 carbonatoms. (a) How many atoms of hydrogen does…

A: a).

Q: A faraday is      a mole of protons     a charge of one electron     a mole of electrons…

A: One Faraday of electric charge equlas to the charge on a mole of electrons (e-), that is 6.022 x…

Q: A certain organic compound has the formula C9H11O2.  A sample of this compound weighs 85.88 grams.…

A: The formula of the given organic compound is C9H11O2.  Mass of the compound=85.88 grams. The molar…

Q: A sugar crystal contains approximately 1.8 x 10" sucrose (C12H2201) molecules. What is its mass in…

A: The molar mass of sucrose (C12H22O11) = 180 g/mol The number of molecules in 1 mole = 6.022 × 1023

Q: Coal is a leading source of energy for the world. While coal is primarily composed of carbon and…

A: Given:S(s)+O2(g)→SO2(g)

Q: A sample of glucose, C6H12O6, contains 1.240×1021 carbon atoms. Part A: How many atoms of hydrogen…

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Q: Is the volume of H2 produced larger than the volume of O2 producedbecause (a) hydrogen atoms are…

A: Given: The volume of H2 produced is larger than the volume of O2

Q: The empirical formula for Antifreeze is CH,O. What would be the molecular formula if the mass of…

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Q: Matter is neither created nor destroyed in a chemical reaction. Thus, the mass of the products of a…

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Q: Number of atoms of C in 6 moles of C,H10 are: O 24.09x10^23 O 36.13x10^23 O 2.49x10^23 O…

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Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: A certain organic compound has the formula C8H12O2. A sample of this compound weighs 1.05 grams.…

A: To determine number of atoms of hydrogen in sample We need to calculate moles of sample present .…

Q: In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106 AMU. Of the choices 12C2…

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Q: a) What is the mass, in grams, of 5.000 moles of carbon atoms? b)What is the average mass, in…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: What is the total number of atoms contained in 3.00 moles of cobalt?

A: Given :- number of moles of Co = 3.00 mol  To calculate :- number of atoms of Co

Q: 1.Glucose is an important biological molecule with the molecular formula C₆H₁₂O₆. What is its…

A: 1.Glucose is an important biological molecule with the molecular formula is C₆H₁₂O₆. An empirical…

Q: Calculate the mass, in grams, of 402 atoms of lithium, Li

A: Number of moles = number of atoms/6.022 x 1023 atoms  Mass = moles x molar mass

Q: Please express and answer the following ASAP General CHEMISTRY 1. Determine the percentage by mass…

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Q: What is the mass, in grams, of 1.67 x 10^15atoms of Mn

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Q: A 67.2-g sample of a gold and palladium alloy contains 2.49x10^23 atoms. What is the composition (by…

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Q: The carat is the unit of mass used by jewelers, and it is exactly 200 mg. How many carbon atoms are…

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Q: Get the number of moles of the given substances. a. 0.26 g iron, Fe b. 1.50 x 1023 sodium atoms, Na…

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Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a nickel atom…

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Q: What is the mass of 2.49 x 1022 of CH4 molecules?  ( 1 mole = 6.02 x 1023)

A: Calculate the number of moles of methane.

Q: Part a What mass of compound is present in 5.00 moles of each of the compounds in Exercise 51? Part…

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Q: A block of gold (Au) has the dimensions (I × b x h) = 0.7600 in x 8.558 mm x 1.816 cm. 1 in = 2.54…

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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: The molecular formula of hexakis(methylthio)benzene is C12H18S6. What is the percentage (by mass) of…

A: We have to calculate the % by mass of C in hexakis(methylthio)benzene .

Q: A sample of glucose, C6H12O6, contains 1.250 * 1021 carbonatoms. (a) How many atoms of hydrogen does…

A: 1 molecule of glucose contains 6 atoms of C, 12 atoms of H and 6 atoms of O.  Molar mass of glucose…

Q: How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 145 mL of…

A: In order to calculate number of molecules of ethanol, first we have to calculate the number of moles…

Q: 2.845 x 10E12 potassium ions equals how many moles of potassium ions?

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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.