How many total atoms of all kinds are present in a 39 gram sample of CaF2?

Q: 0. present in a 20g sample of Sn Determine the number of atoms

A:

Q: The density of solid Fe is 7.87 g/cm³. How many atoms are present per cubic centimeter (cm³) of Fe?

A: a)  Density of Fe = 7.87 g/cm3  1 mol Fe = 56.0 g/mol  1 mol Fe = 6.023 × 1023 Fe atoms    The…

Q: Consider a 0.336 gram sample of H20 and determine the hydrogen's mass.

A: given :-  mass of sample of water = 0.336 g  To calculate :-  mass of H in the sample of water

Q: How many titanium atoms are in a pure titanium bicycleframe with a mass of 1.28 kg?

A: The number of titanium atoms is in a pure titanium bicycle frame with a mass of 1.28 kg has to be…

Q: How many atoms of hydrogen are in a sample of glucose (C6H12O6 molecular mass = 180.12 amu/molecule)…

A: A sample of glucose is considered. The number of atoms of hydrogen present in the sample can be…

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: How many moles of SO2 contain 8.02 × 10^21 atoms of oxygen?

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

Q: MgSO4•7H2O what is themolar mass g/mol?

A: We can calculate the molar mass of MgSO4•7H2O by adding the mass of all atoms which are present in…

Q: How many atoms of vanadium are in 1.28 grams of vanadium

A: One mole of any chemical substance has Avogadro’s constant or Avogadro’s number of atoms.…

Q: How many atoms of vanadium are in 1.28 grams of vanadium ?

A: 1 mole of vanadium contains Avogadro’s number of atoms. The number of mole of 1.28 g of vanadium…

Q: The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centemeter of Cr?

A: Mass = Volume x density Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x…

Q: Without doing any calculations, determine which element in each of the compounds will have the…

A: The mass percent is the ratio of mass of a component to the total mass of the compound, which is…

Q: What mass of ammonia gas (NH3) contains 2.8*10^24 hydrogen atoms?

A:

Q: Diamond is one form of an elemental carbon. An engagement ring contains a diamond weighing 1.25…

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

Q: What are the steps that we should take to find the number of atoms of Ag given 1.15g of silver?

A: Find the number of atoms of Ag given 1.15 g of silver ?

Q: How many atoms are in each elemental sample?

A: 1 mol of an element represents the Avogadro number of atoms of the element. Avogadro number…

Q: In 100.5 g of water (H2O), how many total atoms are there?

A: Number of atoms in a molecule = Atomicity of molecule x no. of moleculeNumber of molecule = no. of…

Q: Calculate the number of atoms present in a sample of 1.50 grams of silver (Ag).

A: Find the mole of silver that present in 1.50 grams of silver sample,

Q: How do I calculate the numner of moles contained in this sample? 1.06 x 10 (to the 25th power) atoms…

A:

Q: The total number of atoms in Ca(OH)2

A: Ca(OH)2 is a base and its name is Calcium hydroxide. Atom is the smallest entity of any element and…

Q: 1. Calculate the number of grams in one mole of CaSO,7H2O? (Atomic weight Ca-40 ,S=32 ,0=16 ,H-1).

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 5. In 43 grams of acetate, how many atoms of oxygen are present?

A: Mass of Acetate = 43 gram

Q: A Freon leak in the air-conditioning system of a large building releases 12 kg of CHF2Cl per month.…

A: The ratio of the given mass to the molar mass is called as moles. Mathematically, Given, Mass of…

Q: Suppose you have a sample of sodium weighing 11.74 g. How many atoms of sodium are present in the…

A: The number of moles (n) of sodium present in the given sample is calculated from the expression (1).…

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: titanium

A: Molar atomic mass of Ti = 47.87 gmol-1  Mass of Ti = 1.00kg = 1000 g  Moles of Ti = ( mass / molar…

Q: Calculate the number of atoms of Fe in a sample with mass = 1899 amu.

A: A sample of Fe of mass  1899 amu.The number of atoms of Fe in a sample is to be calculated.

Q: Determine the mass (in grams) of aluminum present in 1.08 grams of Al2S3?

A: Molar mass of the elements is equal to the sum of the atomic masses of all the elements. Molar mass…

Q: 2. How many ions of metal are in 5 molecules of NasPO4? How many atoms of metal?

A: Metals: Elements which can donate electrons easily are called as metals. Metals are good conductor…

Q: How many moles of Cs are contained in 595 kg of Cs?

A: Here we have to calculate how many moles of Cs are contained in 595 kg of Cs

Q: A 12.0 gram of sample of Cr2(SO4)3 contains how many sulfur atoms?

A: Given data : Mass of Cr2(SO4)3 = 12.0 g Molar mass of Cr2(SO4)3 = 392.16 g/mol

Q: an oxide of iron has the formula Fe3O4. what mass percent of iron does it contain?

A: Molar mass of Fe = 55.845 g/mol.Molar mass of O = 15.999 g/mol.

Q: If a sample of N2O4 contains 19 g of nitrogen (N), how many moles of N2O4 are in that sample?

A: Since in 1 mole of N2O4 we will have 2 moles of N Hence moles of N2O4 = moles of N / 2  Since moles…

Q: How many atoms of O there in 24.7 grams of Al(C2H3O2)3?

A: Here structure of the compound is AlC2H3O23 Molar mass of the compound = 27+32×12+1×3+2×16gmol =…

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: How many oxygen atoms are in 0.25 mole of SO3?

A: 1 mole of SO3 contains 1 mole S atom and 3 mole O atom.

Q: Determine the grams for  4.56 x 10^12 atoms Zn

A:

Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: How many ATOMS of sulfur are present in 2.10 moles of sulfur tetrafluoride ?

A:

Q: What is the average atomic mass of a mystery substance that is 27.5 at a mass of 37g and 72.5% at a…

A: Given: Mass =37 g  Percentage %=27.5 % Mass =38 Percentage % =72.5% Average mass=?

Q: how many atoms per particle in sulfur(s8)?

A: Atomic mass of sulfur = 32g Molecular mass of S8 =8×32=256g

Q: A sample of nitrogen has a mass of 30.2 grams. How many N atoms are there in the sample? How many…

A: First find no. of moles of N2 then no. of molecules then no. of N atoms.

Q: How many atoms are present in a Mg sample with a mass of 10.6 grams?

A: Given, mass of Mg sample = 10.6 g Number of atoms present in 10.6 g of Mg sample = ? Note: molar…

Q: Which contains more atoms? 10g of He 10g of H2O 10g of Ca

A: Given, 10g of He 10g of H2O 10g of Ca

Q: A compound composed of tin (Sn) and oxygen (O) weighs 8.42 g. Decomposition of the compound produced…

A: mass of O = 8.42-6.63                    = 1.79 g

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: In the following How many Fe atoms How many O atoms How many S atoms Fez(SO4)a

A: The number of atoms present in Fe2(SO4)3 has to be given.

Q: A certain organic compound has the formula C9H11O3. A sample of this compound weighs 3.4 grams.…

A: The formula of the organic compound is C9H11O3. The molecular mass of the organic compound=9 x 12 +…

Q: 1. Calculate the number of grams in one mole of CaSO-7H2O ? (Atomic weight Ca-40 ,S=32 ,O=16 ,H=1).

A:

Q: . How many oxygen atoms are in 328g Ca (NO3) 2.

A: 12 oxygen atoms are in 328g Ca (NO3) 2. Formula =Ca(NO3)2=Ca(NO3)2 Molar mass…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.