Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…
A: Ar : Mass of Ar = moles x molar mass = 4.5 x 10-4 x 40 = 1.80 x…
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: 6. What is the percent by mass of nitrogen in ammonium carbonate? a. 14.53% b. 27.83% c. 29.16% d.…
A:
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: Complete the table. Element Mass Moles Number of Atoms Pt 0.0449 Fe 1.14 x 1025 Ti 23.8 mg Hg 2.05
A: Pt : Mass of Pt = moles x molar mass = 0.0449 x 195 = 8.76 g Number of atoms of Pt = moles x…
Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg
A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…
Q: How many atoms are in .452 moles of carbon? 1.33 x 1024 atoms 2.72 x1023 atoms 3.27 x 1024 atoms…
A: We are having 0.452 moles of carbon , we have to calculate the number of atoms in this much moles of…
Q: Number of atoms of C in 14 moles of CH10 are: O 337.23x10^23 O 24.09x10^23 O 84.31x10^23 O…
A:
Q: 2163 T(K) 1557 Mg₂SiO4 20 40 60 Mole % SiO₂ 80 1873 1543 SIO₂
A:
Q: many grams of hydra n atomic masses: C: 1 n: Avogadro's numbe r the numerical value
A:
Q: Number of atoms of C in 9 moles of C4H10 are: O 54.20x10^23 O 216.79x10^23 O 3.74x10^23 O…
A:
Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…
A:
Q: How many moles of silver atoms are there in 1.80 x 104 atoms of silver? O 3.30 x 103 moles O 3.00 x…
A: The given data contains, number of atoms = 1.80×1020.
Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…
A: The question is based on mole concept The formula used and solution is given in the picture
Q: Calculate the number of atoms in 12.45 grams of iron. 1.342 x 1023atoms 1.342 x 1022toms 0.223 atoms…
A: Given information, Given mass of iron = 12.45 g Molar mass of iron = 55.845 g/mol Calculate : Number…
Q: Calculate the number of atoms of chlorine in a 6.56×106 g6.56×106 g sample of chlorine.
A: We know, Avogadro number of atoms are present in 1 moles of a compound .The Avogadro number is…
Q: Moles Molecules/atoms Substance Molar Mass Mass Table sugar C12H22011 C. 34334 28.72 Nails Fe 55.85…
A:
Q: Calculate the moles of Magnesium (Mg) present in 93.5 g of Mg?
A:
Q: One mole of oxygen molecule (02) contains how many atoms of oxygen? a. 6.022 × 1023 O b. 1,6021 ×…
A: We have to tell the no. Of oxygen atom in 1 mole
Q: How many atoms are in a 1.8 mol sample of Magnesium (Mg)? 1.5 x10241.5 x1024 atoms Mg 2.99 x…
A: Given : Moles of Mg = 1.8 mol.
Q: Arsenic is a natural semi-metallic chemical that is found all over the world in groundwater.…
A: A question based on mole concept that is to be accomplished.
Q: How many atoms are in 25.6 g tin? O 3.01 x 1023 atoms O 3.01x 1024 atoms O 6.02 x 1024 atoms O 1.30…
A: Given data: Mass of tin = 25.6 g Standard data: The molar mass of tin = 118.71 g/mol
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: 7. Complete the following table. Mass Number of Number of Molecules or Number of Atoms Substance (g)…
A: As you not specified so I am giving answer of first 3 questions Use there formula to get the…
Q: What is the mass of magnesium (24.305 g/mol) present in 0.3621 g Mg3N2 (100.949 g/mol)? 0.1744 g…
A: Given that: Mass of Mg3N2 = 0.3621g Molar mass of Mg3N2 = 100.949 g/mol Moles of Mg3N2 = given…
Q: 1 mol 197.0 g 1. X 4 = 1 mol 6.022 x1023
A: 1. mole : 1 mole of any substance contains avogadro number (NA) of substances i.e 1 mol =…
Q: How many atoms are in 25.6 g tin? 3.01 x 1023 atoms 3.01 x 1024 atoms 6.02 x 1024 atoms 1.30 x 1023…
A:
Q: A 21.8 g sample of water contains how many water molecules? O 8.23 x 1023 molecules O 7.29 x 1023…
A: Here we have to calculate number of molecules of 21.8 gram of water sample-
Q: AtomIs Molar mass Molels Element loaal 23 12.04X 10 29 c3546 63.5462 copper Gold 393.942 Ag Au…
A: From molar mass we can calculate the no of atom present in the molecules .
Q: Calculate the number of atoms in 12.45 grams of iron . 1.342 x 1023atoms 1.342 x 1022toms 0.223…
A: The question is based on mole concept. We have to calculate number of atoms of iron.
Q: How many moles is 4.50 X 1026 molecules of copper (Cu)? O a 1.34mol 7.48 X 1048 mol 748 mol O d 750…
A: Avogadro's number = 6.022×1023 1 mol of any element /molecule contains 6.022×1023 atoms/molecules…
Q: How many chlorine atoms are in 12.2 g of CCl4?(a) 4.77 * 1022(b) 7.34 * 1024(c) 1.91 * 1023(d) 2.07…
A: Consider the 12.2 g of CCI4 Calculate the molar mass of CCI4 as follows: Molar mass = Atomic mass of…
Q: 1.50 g Lithium Carbonate to atoms O 9.09 x 10*23 atoms O 7.12 x 10°23 atoms 8.06 x 10*23 atoms O…
A: Lithium carbonate is a chemical salt, a lithium carbonate salt with the Li2CO3 formula. This white…
Q: How many moles of Pb are in 4.71 x 1021 Pb atoms? O 2.84 x 1045 6.022 x 1023 207.2 none of the above…
A:
Q: How many silicon atoms are present in a sample of 32.8 g of silicon? The molar mass of silicon is…
A: Given : Mass of silicon i.e Si = 32.8 g And molar mass of Si = 28.09 g/mol.
Q: How many atoms are in 25.6 g tin? O 1.30 x 1023 atoms O 3.01 x 1024 atoms O 3.01 x 1023 atoms O 6.02…
A: Moles of tin are, Moles = mass ÷ molar mass Moles = 25.6 g ÷ 118.71 g/mol Moles = 0.22 mol
Q: Number of atoms of Carbon in 9 moles of C4H10 are: O 24.09x10^23 O 3.74x10^23 O 216.79x10^23 O…
A: Avogadro's number is the number of units in one mole of any substance ( molecular weight…
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: Čalculate the mass of 1.92 x 1018 atoms of Mg. O 2.73 x 10 10 g O 8.96x 10:5 g O 1.62 x 10-4g O 7.75…
A:
Q: i don't know where to start to try and figure these out.
A: The following values can be determined as,Platinum (Pt)
Q: 3. Determine mass percent of nitrogen and iron in Fe(NO3)3.
A:
Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…
A:
Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…
A:
Q: 3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its…
A: Mass of compound = 12 g Mass of nitrogen = 7 g We need to determine formula of compound.
Q: How many moles are there in each sample? 55.0 g Ti 16.9 mg Na 7.95 x 10^24 Ne atoms
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: Complete the table: Element Moles Number of Atoms Ne 0.534 _____ Ar _____ 3.11×1024 Xe 1.82…
A: A table of incomplete data, which is to be completed. No.of atoms of Ne = No.of moles * Avogadro…
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…
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- What is the biggest difference between the Lewis and the AO-model in terms of the localisation ofelectrons in atoms?how will the density of the dν/dE levels of the energy spectrum of free electrons change and by how many times with an increase in the number of N atoms forming a crystal by n timesThe ionisation energy of potassium is 4.34 eV and the electron affinity of chlorine is 3.61 eV. The Madelung constant for the KCl structure is 1.748 and the closest distance between ions of opposite sign is 0.314 nm. On the basis of these data, calculate the cohesive energy of KCl. Compare this with the observed cohesive energy of 6.42 eV for the ion pair and comment on the reasons for any discrepancy
- In CF3Cl the C—Cl bond-di s sociat ion energy i s339 kJ>mol. In CCl4 the C—Cl bond-dissociation energyis 293 kJ/mol. What is the range of wavelengths of photonsthat can cause C—Cl bond rupture in one molecule butnot in the other?In a XeF3Br molecule, why is there a difference in bond length between the Xe-F bond and the Xe-Br bond?a) what is meant by the term polarizability? (b) Which of the following atoms would you expect to be most polarizable: O, S, Se, or Te? Explain.
- Findthemass%ofH2O2 inasolutionmadefrom36gofH2O2 and84gofH2O: A) 84% B) 36% C) 43% D) 30.% E) 70.%10. Which of the following does have the lowest polarizability? Z of I = 53, F = 9, Br = 35, I = 53a.Cl-b.I-c.F-d.Br-The photoelectron spectrum of HBr has two main groups of peaks. The first has ionization energy 11.88 eV. The next peak has ionization energy 15.2 eV, and it is followed by a long progression of peaks with higher ionization energies. Identify the molecular orbitals corresponding to these two groups of peaks.
- The B2 molecule is paramagnetic; show how this indicates that the energy ordering of the orbitals in this molecule is given by Figure 6.18a rather than 6.18b.The percent ionic character of the bonds in several interhalogen Molecules (as estimated from their measured dipole moments and bond lengths) are ClF (11%), BrF(15%), BrCl (5.6%), ICl(5.8%), and IBr (10%). Estimate the percent ionic characters for each of these molecules, using the equation in Problem 37, and compare them with the given values.(a) The ionization energy of potassium (K) is 4.34 eV and the electron affinity of chlorine (Cl) is -3.61 eV. The Madelung constant for the KCl structure is 1.748 and the distance between ions of opposite sign is 0.314 nm. On the basis of these data only, compute the cohesive energy of KCl per ion pair. (b) The observed cohesive energy of KCl is 6.42 eV per ion pair. On theassumption that the difference between this figure and that obtained in (a) is due to the exclusion principle repulsion, find the exponent n in the formula Br^-n for the potential energy arising from this source.
