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

Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

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: If you were asked to determine the formula mass of aluminum sulfate, how many oxygen atoms would you…

A: Formula mass is the sum of the mass of all the elements in the empirical formula of the compound.

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: How many grams of tin are present if there are 6.022 x 10^23 atoms present in a sample

A: Applying mole concept. Mole= w/M

Q: Mg(s) + 2 HCl(aq) −−−→ MgCl2aq) + H2(g)   given that the mass of magnesium is 0.030 g, find the…

A:

Q: b: A compound is 16.2% carbon, 18.9% nitrogen, and 64.9% oxygen. Its formula mass is around 296 amu.…

A:

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: How many moles of atoms are contained in 4.5 x 1022 atoms Cu.

A: The number of atoms of Cu is 4.5×1022. The formula to calculate number of atoms is,

Q: Calculate the number of atoms in a 4.70×1034.70×103 g sample of lithium.

A: 1 mol of a sample contains 6.02×1023 atoms. Number of moles of sample can be determined using the…

Q: Determine the number of atoms of O 10.0 of CO2.

A: Since each molecule of CO2 has 1 atom of C and 2 atoms of O  Hence each molecule has total number of…

Q: If a sample of Fe2S3 contains 1.25x10^15 iron atoms what is the mass in grams ?

A:

Q: Calculate the number of moles of hydrogen peroxide molecules, H2O2, present in a sample containing…

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 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: A sample of ammonia Nh3 contains 1.2 X 1023 hydrogen atoms. How many NH3 molecules are in the…

A: Ammonia (NH3) is a molecule that exists as a gas at Standard temperature (298 K). It contains atoms…

Q: A binary compound between an unknown element E and hydrogen contains 91.27% E and 8.73% H by mass.…

A: The formula of the binary compound is E3H8.

Q: Calculate the mass percent composition of lithium in LizPO4. O 45.2% O 32.5% O 18.0%

A: Calculate mass % of Li in Li3PO4 ?

Q: Calculate the number of nitrogen atoms in a 150.0 g sample of dinitrogen tetroxide

A:

Q: The elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID])…

A: Empirical formula always represents the simplest/easiest ratio carried by particular molecule's…

Q: Determine the mass in grams of 5.77 × 10²¹ atoms of carbon.

A:

Q: How many oxygen atoms are contained in a 5.525 g sample of calcium phosphate?

A: First of all, we will calculate the no. of moles of calcium phosphate in 5.525 g of sample and then…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 24.0 mg…

A:

Q: Using the average atomic mass, calculate the mass in grams of each of the following samples.…

A: Given information,     4.50 x 103 mol of germanium, Ge

Q: b. Mass of I- in the sample. O 0.1438 g O 0.1722 g O 0.1623 g O 0.1939 g O 0.1840 g

A:

Q: 2. How many moles of Pb is 9.3 x 1015 atoms of Pb?

A: Number of atom of pb = 9.3×10^15 atoms

Q: Calculate the number of atoms of iodine in a 7.88×10^6 g sample of iodine.

A:

Q: Calculate the number of grams of lithium in 5.44 x 10^21 atoms of lithium.

A: Given -> Number of atoms of lithium =5.44 × 10^21 atoms

Q: 1. How many moles of Pb is 9.34 x 1015 atoms of Pb?

A:

Q: how many atoms of carbon are in a 12.5 mg sample of C^3H^8?

A: Given, Mass of C3H8 = 12.5 mg = 0.0125 g Formula used,  moles=given massMolar mass 1 mol = 6.023 x…

Q: Calculate the number of atoms in a 6.75×10^3 g sample of sulfur.

A: Calculate the number of moles of Sulfur

Q: F. Determine the number of moles in 3.82 X 10 molecules of water.

A:

Q: A sample of phosphorus weighs 3.8 x 103 ng.  How many phosphorus atoms are present in this sampme?…

A:

Q: Calculate the mass in grams of 1.8 x 10^17 KCl molecules

A:

Q: Calculate the percentage of potassium, by mass,in K2PtCl6.

A: Mass percent of the solution is defined as the mass of solute divided by the mass of solution…

Q: Calculate the number of atoms of iodine in a 5.25×106 g5.25×106 g sample of iodine.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

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: Calculate the number of atoms of copper in 2.65 g of copper.

A: The number of atoms of copper in 2.65 g of copper needs to be determined. Required information:…

Q: 1. Calculate the number of moles of chlorine in 2.34 x 1019 molecules of chlorine.

A: The question is based on mole concept. we have to calculate number of moles in given molecules of…

Q: calculate the mass in grams of 1.9x1023    atoms of lead

A: Given : Number of lead atoms = 1.9 X 1023 atoms

Q: Calculate the number of atoms in a 8.41×103 g sample of carbon.

A:

Q: Calculate the number of atoms in a 9.06×103 g sample of strontium.

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: Calculate the number of atoms in a 9.03×103 g sample of sodium.

A:

Q: Determine the number of moles of Zn atoms in 3.15 g of zinc metal.

A:

Q: 1. How many moles would contain 12.0 g of P ? 2. Find the mass (in grams) 7.7 X 1023 molecules of…

A: 1. Given values , Mass of P= 12.0 g Molar mass P= 30.973762 g/mol

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

A:

Q: A sample of terbium contains 3.01×1025 atoms. What is the total mass of this sample?The molar mass…

A: It is required to calculate the mass of 3.01 x 1025 atoms of terbium and the molar mass is 158.9…

Q: 2. Determine mass (in g) of CO that contains 5.50 x 108 atoms

A:

Q: What is the mass of 1.36 x 1022 molecules of HCI? O 36.5 g 1610 g

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.