1. Calculate the mass of carbon in a 1-carat diamond that contains 7.56 × 1022 atoms of carbon.

Q: calculate the number of atom in 2.34 grams of Ca.

A: Given: Mass of Ca= 2.34 g To determine: The number of atoms in 2.4 g of Ca=? 1 mol of Ca contains…

Q: calculate the masss of carbon in a 1-carat diamond that contains 7.56 x 10^22 atoms of carbon

A:

Q: The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead,…

A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: Complete the table. Element Mass Moles Number of Atoms Na 38.5 mg C 1.12 V 214 Hg 1.44 kg

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

Q: How many atoms of Cu are existing in 2.36 g of copper wire?

A: Since molar mass of Cu = 63.546 g/mol Mass of Cu = 2.36 g (given)

Q: What is the amount, in moles, of each elemental sample? 3.55 g Zn

A: The amount in moles of Zn are to be calculated. Given: Mass of Zn = 3.55 g The relation between mass…

Q: What is the mass percentage of phosphorus in a sample of 8.53 phosphorus oxychloride containing a…

A: Mass percentage of phosphorus = 20.16 %

Q: a. 1.51 x 1015 atoms of Si to mol of Si

A: Given number of atoms can be easily calculated to moles by using avogadro number.

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: Reference section 3.2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and…

A:

Q: Calculate the number of atoms in a 2.09×1032.09×103 g sample of strontium.

A: Calculate the number of moles of strontium (Sr):

Q: Calculate the mass of 5.70 X 10^22 tungsten atoms.

A: Given No of atoms of tungsten = 5.70 x 1022   Also, Molar mass of tungsten =  183.84 g

Q: Calculate the mass of carbon in a 1-carat diamond that contains 7.56×10^22 atoms of carbon.

A: Since moles = number of atoms / Avogadro number Avogadro number = 6.022 X 1023  => moles of…

Q: The number of copper atoms in a 3.0 g lump of copper is 2.8 x 10^22,how many electrons are pesent in…

A:

Q: atoms in Number 06 Hydrogen O•250 moles o6 NH3

A: Given that, Moles of NH3= 0.250 mol

Q: Write the chemical formula for each compound, and then calculate the number of atoms of oxygen in…

A: a) Given, 84.15g of boron oxide Chemical formula of boron oxide is = B2O3 Therefore, the number of…

Q: The mass ratio of sodium to fluorine in sodium fluoride ls 1.21:1. A sample of sodium fluoride…

A:

Q: 5. How many atoms of hydrogen are present in 2.69 moles of water? 6. Calculate the mass of nitrogen…

A:

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

A:

Q: 9. There are 1.5 x 1023 atoms in 2.5 moles of zinc. TRUE FALSE Chock it skip

A: Number of atoms in 1 mole = 6.02 x 1023

Q: 8- Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. The natural abundance of the…

A:

Q: 6. How many oxygen atoms are in 225 g oxygen gas? a. 4.23 x 104 C. 8.47 x 10:+ b. 6.84 x 10²4 d.…

A: The Given amount of oxygen gas O2 = 225 grams        the molar mass of O2 = 32 g/mol To calculate…

Q: How many hydrogen atoms are there in 8.75 g of C,H,NO,? Select one: a. 23 4.79x 10 b. 3.22x 1023 с.…

A: Given: Mass of C2H7NO2 = 8.75 g Molar mass of C2H7NO2 = 77.08 g/mol

Q: Without doing any calculations, determine which of the samples contains the greatest amount of the…

A:

Q: 28) 8.42 x 1027 atoms of tin 29) 6.39 x 1018 atoms of sulfur

A: Given  8.42 × 1027 atoms of tin  6.39 × 1018 atoms of sulfur  5.99 × 1030 molecules of SiO2

Q: How many Si atoms are there in a 63.4 gram sample of elemental Si? atoms

A: Given the mass of the Si sample = 63.4 g  We have to find the number of Si atoms.  We can proceed…

Q: Calculate the number of atoms in a 2.92 x103 g sample of boron.

A: Firat calculate number of moles.

Q: 8- Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. The natural abundance of the…

A: bromine has two isotopes which are Br-79 and Br-81. Given, the mass of Br-79 isotope = 78.92 amu the…

Q: Calculate the mass percent nitrogen in (NH4)2CO3

A: A way to represent the concentration of an element in a compound or a mixture is Mass percentage.…

Q: What mass of Chromium metal would contain 5.00 x 1020 atoms of Cr? 0.0432 g

A:

Q: Calculate the number of atoms in a 8.96 X 103 g sample of lithium

A: In a sample various numbers of atoms are present. These numbers depends upon mass of sample.

Q: 8- Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. The natural abundance of the…

A:

Q: Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are…

A: Mass percent :-  The mass of a component in grams present in 100 grams mixture of all components is…

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…

A:

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: The amount of sodium produced on decomposition of sample NaF is 28.8g. The mass ratio of sodium to…

Q: A cylindrical piece of pure titanium (Ti, density=4.506 g/cm^3) has diameter d=1.15 cm and length…

A:

Q: 13) A 44.8 g rhodium sample contains how many rhodium atoms? B) 2.74 x 105 atoms A) 2.62 x 1023…

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Q: Calculate the number of grams in 1.5 x 10^16 atoms of sulfur

A: Since moles = number of atoms / Avogadro's number  Avogadro's number = 6.022 X 1023  And number of…

Q: A sample of TNT, C7H5N3O6 , has 7.97 x 1021 nitrogen atoms. How many hydrogen atoms are there in…

A: The details solution for this is provided below in attach image.

Q: Calculate the number of atoms in a 9.99 x 10 g sample of calcium.

A:

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: Given : Density of silica = 2.20 g/cm3  And diameter of grain of sand = 0.455 mm

Q: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants…

Q: Calculate the number of atoms in a 2.33 x 10' g sample of silicon.

A: Avogadro’s number or Avogadro’s constant relates the molar mass and the physical mass of an element,…

Q: Calculate the number of atoms in a 4.06 x 10 g sample of calcium. number of atoms:

A: Given: The mass of the sample of calcium (Ca) is 4.06 x 103. The molecular weight of calcium (Ca) is…

Q: How many atoms are in the sugar in this cup?

A: Given :- mass of sucrose = 180 g  To calculate :- number of atoms in sucrose

Q: Calculate the mass, in kg, of sample. 1.22x10^27 manganese atoms

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Q: 1). (NH4);PO4 + Pb(NO3)a > Pb3(POa)a +. _NH,NO3 23.98 grams of lead (IV) nitrate are needed to…

A:

Q: A certain compound is made up of one phosphorus (P) atom, three bromine (Br) atoms, and one oxygen…

A: The given compound contains one phosphorus atom, three chloride atoms and one oxygen atom. The…

Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

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.