What mass of Chromium metal would contain 5.00 x 1020 atoms of Cr? 0.0432 g

Q: How many moles of zinc, Zn, are in 1.75×1024 Zn atoms?

A: Avogadro concept: According to this concept, we know that one mole of a substance contains…

Q: How many atoms of sulfur are in 279 g of Na₂S₂O₃ ?

A: Given , Mass = 279 g Molar mass of Na₂S₂O₃= 158.11 g/mol

Q: What is the mass grams that are in 6.70 x 1025 molecules of 1,?

A:

Q: How many moles of titanium are contained in 71.4 g?

A:

Q: how many moles of gold is 2.56 x 1026 atoms of gold

A: 1 mole = 6.022×1023 [ Avogadro's number ] Anything with this number is said to be one mole For…

Q: What is the total number of atoms contained in 2.00 moles of zinc?

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

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 mass of 1.00 x 1024 (a septillion) molecules of water.

A: Given : Number of water molecules = 1.00 X 1024

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: Mass (%) of an element in compound = 100 x Mass of element/Mass of compound Number of moles =…

Q: How many grams of magnesium, Mg, would contain the same number of atoms as 58.69358.693 g of nickel,…

A: Given: 58.69 g of Nickel

Q: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

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

A:

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 mass of a single molybdenum atom is 1.59×1022 grams. How many molybdenum atoms would there be in…

A: Given: Mass of single molybdenum i.e. Mo atom = 1.59 X 10-22 g. And total mass of Mo sample = 110 mg…

Q: How many moles of carbon tetrabromide are present in 4.07 x 1022 molecules of this compound?

A:

Q: The mass of 5.20 moles of glucose, C6H12O6 is

A:

Q: 8,47x102 calculate the mass ; ingram of 8,47x1022 atoms of coppER

A:

Q: Calculate the mass, in grams, of 532.0 atoms of cadmium, Cd (1 mol of Cd has a mass of 112.41 g).

A: We know that, 1.0 mol of any substance = 6.022 × 1023 atoms of that substance.

Q: A compound is composed of element X and hydrogen. Analysis shows the compound to be 80% X by mass,…

A: Given data :- A compound is composed of element X and hydrogen. Analysis shows the compound to be…

Q: Calculate the number of moles in 9.364 x 1018 atoms of Ca

A:

Q: How many oxygen atoms are in 4.00 g of quartz?

A: Quartz is nothing but SiO22 moles of oxygen atoms per mole of SiO2mass of quartz (SiO2) given = 4…

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: What mass of ethanol (C2H6O) would contain 7.0 x 1026 atoms of carbon?

A:

Q: What mass of oxygen is 63.8 g of magnesium nitrate: Mg(NO3)2 (Mw. 148.33 g/mol)?

A: Molar mass of Mg(NO3)2 = 148.33 g/mol Atomic mass of O =16.0 g/mol Mass of Mg(NO3)2 = 63.8 g (Given)…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 25.5 mg…

A:

Q: A sugar crystal contains approximately 2.1x10^17 sucrose (C12H22O11) molecules. What is it’s mass in…

A: The molar mass of the sucrose (C12H22O11) is 342 g/mol.The number of moles of sucrose can be…

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: In this question, we want to determine the moles of Nitrogen gas. How we can determine, you can see…

Q: 1. 2 moles of Ar atoms contain how many atoms?           A.   1        B.   1.204 x 1024…

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

Q: How many atoms of copper are there in 0.0075 g of copper?

A:

Q: A sugar crystal contains approximately 1.8x1017 sucrose (C12H22O11) molecules. What is its mass in…

A:

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 0.430 g of gold?

A: Given, mass of Gold = 0.430 g  Molar mass of Gold = 196.97 g/mol Number of Atoms = ?

Q: How many oxygen atoms are in 1.70 g of quartz?

A: The chemical formula of quartz is SiO2. The formula mass of SiO2 is 60.08 g. The number of moles (n)…

Q: 1) How many moles of cobalt (Co) atoms are there in 6.00 X 10 (6 billion) Co atoms? 2) How

A: We know, 1 mols = 6.022x1023 atoms

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(CIO), (MM…

A:

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: A 0.500 g sample of tin foil reacted with oxygen to give 0.635 g of product. (a) What is the…

A:

Q: Determine the quantity of atoms of vanadium in 1.28 grams of vanadium

A: Given :- mass of Vanadium = 1.28 g  To calculate :- number of atoms of Vanadium

Q: What is the mass of 2.49 x 1022 of CH4 molecules?  ( 1 mole = 6.02 x 1023)

A: Calculate the number of moles of methane.

Q: d) How many atoms of hydrogen are in 1.0 mol dimethylnitrosamine? e) What is the mass of 1.0 x10°…

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: How many GRAMS of fluorine are present in 5.01×1022 molecules of sulfur tetrafluoride ?

A:

Q: How many oxygen atoms are in 2.40 g of quartz?

A: quartz :  molecular formula = SiO2 molecular mass = 28 + (2 x 16) g/mol                            =…

Q: 3. How many atoms are in 1.45 g of Ag?

A:

Q: 10) What is the mass in grams of 0.852 moles of ferric oxide (Fe,O,) ? A) 136 g B) 17 g C) 5.34 x…

A: Number of moles = 0.852 mol

Q: 6. The mineral enargite is 48.42 % Copper. 19.02 % arsenic and 32.57% sulfur by mass. What is the…

A:

Q: What is the mass percent of chlorine in NH4Cl?

A: First, find the total mass of NH4Cl.NH4Cl = 54g/mol

Q: A 69.5 g69.5 g sample of the compound X3O4X3O4 contains 19.2 g19.2 g of oxygen atoms. What is the…

A: First Calculate mas percent of oxygen in compound   Total mass of oxygen in sample is 64g  Then need…

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.