1. What is the mass of the water used for this experiment?

Q: Purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all of the…

A: Given:  Purple atom = Iodine (I) White atom = Hydrogen (H)

Q: Help me with understanding how to calulate mass for A1 and A2

A: Molarity = mole of solute(mol)volume of solution (L)Mass of compound = moles × molar mass1mL =…

Q: In what mass units are the average atomic mass and molecular mass expressed? What is the value of…

A: The average atomic mass and molecular mass is expressed in atomic mass unit (amu). It is defined as…

Q: What is the mass of 100 platinum atoms?

A: Atomic mass, the amount of matter found in the element atom. It is expressed as a multiple of…

Q: What came first? protons neutral Atoms or nuclei? which came second?

A: Given What came first? protons neutral Atoms or nuclei? which came second?

Q: aper + watch glass 45.79 46.28-9 whem ed lihw mwo 460d/ g filter paper + copper 1st time filter…

A: Given that,  Mass of hydrated sample, m1 = 1.02 g Mass of dehydrated sample, m2 = 0.91 g Mass of…

Q: 1.25 moles of PbO2 have a mass of

A: Given  Number of mole of PbO2  = 1.25 mole  Mass = ?

Q: How many helium atoms are there in a helium blimp containing 537 kg of helium? Express the number of…

A: Given,Mass of helium = 537 kg                                   = 537 × 103 g     (1 kg = 103 g )…

Q: If the same mass of metal was used in the experiment, how would the volume of hydrogen gas produced…

A: Given ; both metals have equal mass used in experiment

Q: What is the mass of 1.6x10^21 argon atoms?

A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

Q: What is a proton ? what is a chemical?

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

Q: (c) 54.5% C, 9.2% H, and 36.3% O by mass

A: given :-  percentage composition of C = 54.5%  percentage composition of H = 9.2%  percentage…

Q: what is the mass element of calcium?

A: Mass of an element is represented by A in symbolic representation of element.

Q: What Is CHEMICAL COMPOSITION?

A: To find: The definition about chemical composition

Q: Calculate the number of atoms in sample. 12.899 g Pt

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: 00 Не Enter the percent volume of He in the visualization. MM[He]=4.003 g/mol, MM[N2]=28.01 g/mol.

A: In 1 mol of helium there is 6.022×1022 atoms of helium. So, for the given system the number of moles…

Q: In a neutral atom the number of protons equals

A:

Q: alculate reduced molar mass (in g/mol] for two particles with masses 30.4 g/mol and 57.7 g/mol. Note…

A: Given mass of particle 1(m1) = 30.4 g/ mol Mass of particle 2(m2) = 57.7 g/ mol Reduced mass =?…

Q: What is the mass of 1 mole of pennies? ? How many moles of pennies have a mass equal to the mass of…

A: Q1) One mole of any substance contain Avogadro number of particles. One mole of pennies contain…

Q: how many atoms of scandium are in 7.54 moles of scandium

A: According to  Avogadro,  1 mol of scandium has 6.023 x 1023 number of atoms  Then 7.54 mols of…

Q: Calculate the mass, in grams

A:

Q: How many atoms of gold are in 1 gram of gold?

A: Given, 1 gram of gold

Q: I want to know at least some reason why the mass of the Mgo formed could be lower that expected

A: Interpretation -  To tell about a reason why the mass of the MgO formed could be lower that expected…

Q: 2) How is the mole similar to a dozen?

A: (2) Answer- A mole is a unit of counting particles such as atoms, molecules, ions etc. which…

Q: ne mass

A:

Q: Describe what is mass spectrometer in your own words.

A: Spectroscopy is branch of chemistry in which we deal with electromagnetic spectra that results from…

Q: How many helium atoms are in 541 kg of helium?

A:

Q: What is a mole? How is the mole concept useful in chemical calculations?

A: Mole Mole is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: Ca is 42 Mass =

A:

Q: When mercuric oxide decompose, 18.522 g Mercury and 1.478 g of oxygen forms. How much mercuric oxide…

A:

Q: If you have 1.4 moles of silver, what would be the mass of silver?

A: Given, moles of Silver (Ag) = 1.4 moles to find : mass of Ag.   Solution : We know that, Atomic mass…

Q: Calculate the number of atoms in sample. 39.733 g S

A: Given, Mass of Sulfur = 39.733 g

Q: A sample of ethyl mercaptan weighing 3.17 g contains 1.46 g of sulfur.  What mass percentage of this…

A: Given Mass of sample = 3.17 g Given mass of sulfur in it = 1.46 g We need to determine % of sulfur…

Q: Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.58 kg of…

A:

Q: What is a chemical formula?

A:

Q: Mass

A:

Q: How many atoms are present in 44.96 g of scandium? atoms

A: Given mass of scandium is 44.96 g Molar mass of scandium(Sc)=44.96 g/mol

Q: Determine the mass, in grams, of 0.750 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: Determine the number of each type of atom in formula. BaCl2

A: Given: BaCl2

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: Upon decomposition, one sample of magnesium fluoride produces 1.65 kg of magnesium and 2.57 kg of…

A: The amount of magnesium produced on the decomposition of sample (I) of MgF2 is 1.65 kg. The amount…

Q: Calculate the mass

A: At NTP, temperature T1 = 293.15 K Volume, V1 = 24.04 L Temperature, T2 = 30 ◦C or 303.15 K Volume,…

Q: 16. While cleaning your attic, you find your old mass of 11.3 collection? and the rest of mass of 82…

A:

Q: If 0.523g of copper is used in this experiment and 0.496 g are recovered at the end of the…

A: Given, Copper is used in this experiment is 0.523 g  And at the end of this experiment the amount of…

Q:

A:

Q: Determine the number of atoms in 61.0 grams of calcium, Ca.

A: Given;

Q: Calculate the mass of sample. 72.1 mmol SO2

A: Given:  The number of moles of SO2=72.1  mmol=72.1×10-3mol The molar mass of…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.