1.Calculate the mass of the following numbers of atoms =(3.01 = 10^21)atoms of cobalt

Q: What quantity in moles of iron atoms do you have if you have 2.50 × 10²³ atoms of iron. (The mass of…

A: We know that ; 1 mole of substance contain = Avogadro's number of atoms . ( Avogadro's number =…

Q: 2.01×1022 HeHe atoms         Express your answer using three significant figures.    How many moles…

A: We have to calculate the number of moles of He

Q: rgahic compound has a gram molecular weight of 372 g/mol, and its composition is 38.6% carbon, 9.76%…

A:

Q: Determine the mass in grams of 5.28 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given, Number of barium atoms =5.28×1021 atomsmass of one mole of barium =137.33 gwe are asked to…

Q: 10. Make the following conversions: (a) 28.4 g S to moles S (b) 2.50 kg Nacl to moles Nacl (c) 42.2…

A: Number of moles = mass ÷ molar mass

Q: A sample of chlorine has a mass of 49.4 grams. How many Cl atoms are there in the sample?  atoms…

A: Chlorine mass of  = 49.4gm Calculate the  =  1 - how many cl atom of sample  2 - how many cl2…

Q: 1.2x10^23 gold atoms calculate into mass, in grams

A: Given:Number of gold atoms = 1.2 x 1023 atoms.Molar mass of gold (Au) = 199.97 g/mol.

Q: A sample of monochloro pentaborane (9), B5H8Cl, has a mass of 20.7 g. What amount, in moles, does…

A: Chemical formula of monochloro pentaborane = B5H8Cl.Above compound contains B, H and Cl atom.

Q: A solid circular cone made of pure platinum (density = 21.45 g/cm3) has a diameter of 2.75 cm and a…

A: Given information,    Diameter (d) = 2.75 cm so radius (r) = 1.375 cm     Density = 21.45 g/cm3…

Q: What quantity in moles of iron atoms do you have if you have 2.20 x 1023 atoms of iron. (The mass of…

A: Number of atoms of Iron = 2.20 X 1023 atomsMass of one  mole of iron = 55.85 gWe need to calculate…

Q: Copper(II) fluoride contains 37.42% F by mass. Use this percentage to calculate the mass of fluorine…

A: Mass percentage of an element in a given compound is the mass of that particular element divided by…

Q: What is the mass in grams of 6.91x 1015 chromium atoms? Put your answer in box in scientific…

A: Given,No of atom of Cr= 6.91* 1015 We have to find out the mass of Cr in grams.

Q: Determine the mass in grams of 5.53 × 1021 atoms of arsenic. (The mass of one mole of arsenic is…

A: Answer:- Firstly using the given number of atoms of arsenic, moles are calculated. Then using the…

Q: What quantity in moles of iron atoms do you have if you have 3.00 x 10^23 atoms of iron. (The mass…

A: Number of iron atom = 3.0×1023Mole is equal to number of atom divide by avagadro numberValue of…

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

A: Given values: Percentage of carbon = 70.53 % Percentage of hydrogen = 13.02 % Percentage of nitrogen…

Q: Determine the mass in grams of 6.04 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given data,Number of atoms of Ba=6.04×1021atomsMolar mass of Ba=137.33g/mol

Q: How many molecules are there in 62.3 g of water? You will need to divide your answer by 1.0x10^23

A: Given:  Mass of water = 62.3 g

Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: Determine the mass in grams of 4.83 × 10²¹ atoms of barium

A: Given :- number of atoms of Ba = 4.83 × 1021 atoms  Mass of 1 mol Ba = 137.33 g  To calculate :-…

Q: A sample of NH3 has a mass of 84.06 grams.   Calculate the moles of NH3 in the sample.…

A: Given : Mass of NH3 = 84.06 g

Q: A sample of stainless steel contains 10.5% chromium by mass. What mass of chromium, in grams, is…

A: Given information,             Stainless steel sample contains 10.5% chromium by mass.…

Q: Calculate the mass of 4.53 × 1021 chromium atoms in grams.

A:

Q: A sample of propane, C3H8, contains 13.8 molesmoles of carbon atoms. How many total moles of atoms…

A:

Q: What quantity in moles of potassium atoms do you have if you have 3.50 x 1024 atoms of potassium.…

A:

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Naturally occurring chlorine consists of 35Cl (mass 34.96885 amu) and 37Cl (mass 36.96590 amu), with…

A: Given, Naturally occurring chlorine consists of Cl35 (mass 34.96885 amu)and Cl37 (mass 36.96590…

Q: Convert between moles and numbers of atoms. A sample of lithium contains 2.24x1025 Li atoms. What…

A:

Q: And iron ore contains 58.0% iron oxide. Iron constitute 70.0% of iron oxide. How much iron is there…

A: Given, an iron contains 58.0% of iron oxide which means 100 g of iron ore contain 58 g of iron…

Q: Determine the mass in grams of 2.25 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…

A:

Q: The formula for alum has 1 Al. How many units alum could be made from 7 Al atoms? Answer with a…

A: The molecular formula of alum is K2(SO4)·Al2(SO4)3·24H2O or KAl(SO4)2·12H2O

Q: A sample of C,H, has 9.28 x 1024 H atoms. How many carbon atoms does the sample contain? number of…

A: Interpretation-  To determine the carbon atom in the give molecule C3H8 - To determine the total…

Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: what quantity in moles of potassium do you have if you have 5.70 x 10^22 atoms of potassium. ( the…

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

Q: A sample of trifluoroacetic acid, C,HF,02, contains 25.3 g of fluorine. Calculate the mass of the…

A: One molecule of C2HF3O2 contains 2 atoms of carbon, 1 atom of hydrogen, 3 atoms of fluorine and two…

Q: average atomic mass

A:

Q: 1.75 x 1023 atoms Pb converted to grams

A:

Q: Determine the mass in grams of 6.65 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: The mass in grams of 6.65 × 10²¹ atoms of barium has to be determined provided that the mass of one…

Q: Determine the mass in grams of 4.65 × 1221 atoms of barium. (The mass of one mole of barium is…

A:

Q: Determine the mass in grams of 4.54 × 10²¹ atoms of zinc. (The mass of one mole of zinc is 65.39 g.

A:

Q: Determine the mass in grams of 7.57 x 10 atoms of zinc. (The mass of one mole of zinc is 65.39 a)

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Q: 1.671g anhydrous copper (II) sulfate to moles

A:

Q: how, many grams of phosphorous are contained in 3.07 x 1027 atoms of phosphorous? Enter your answer…

A: The concept of mole is a conducive way to express the amount of particles. This is a measurement…

Q: What quantity in moles of potassium atoms do you have if you have 3.50 x 1022 atoms of potassium.…

A:

Q: For the molecular compound silicon dioxide, what would you multiply "molecules of SiO," by to get…

A:

Q: What quantity in moles of silver atoms do you have if you have 5.09 × 10²¹ atoms of silver. (The…

A: 1 mole = 6.021 x 1023 atoms. The mass of one mole of silver is 107.87 g.

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.