The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants. The maximum level that the EPA Considers safe for lead air pollution is 1.5 µg/m³. Part A If your lungs were filled with air containing this level of lead, how many lead atoms would be in your lungs? (Assume a total lung volume of 5.30 L.) n 2.3x1013 atoms

Q: 1.0g of this compound has .272g of carbon and .727g of oxygen, find the formula and name for this…

A: Given, .272g of carbon and .727g of oxygen Therefore,                  C : O    (.272/12) :…

Q: Gold is a precious metal . how many atoms of gold are in a grainof gold?

A: Given,  Gold is a precious metal . how many atoms of gold are in a grain of gold = ?

Q: 5. Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of…

A: Given, The mass of a compound is 20.0 grams The mass of the calcium in the compound is 4.00 grams

Q: Electrons may transfer from  a) atoms of barium to atoms of chlorine b)atoms of sodium to atoms of…

A: We have to predict the option for which  electron transfer is possible.

Q: A brass alloy contains 78.9% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A: We have to predict the moles of Zn and atoms of Zn.

Q: Given the following data: Substance A B Molar mass, g/mol 14 40 Density, g/ml 0.534 1.55 Assume a…

A:

Q: 5.0g of this compound has 2.2g of Iron and 2.8g of chlorine, what is the formula

A: Given 5.0g of  compound has 2.2g of Iron and 2.8g of chlorine  Molar mass of iron = 55.845 g/mol…

Q: How many atoms of each element are in a formula unt of Magnesium Phosphate?

A: Ionic compound  Ionic compound composed of cation which is positively charged (+charge) and an anion…

Q: A https://ezto.mheducation.com/hm.tpx E Connect Chem 1151- Survey of Chemistry I: C (Dr. Meyers),…

A: Given that, Number of atoms of Arsenic = 5.58×1024 atoms.

Q: how many carbon atoms are, hyrdrogen atoms, oxygen atoms, and nitrogen atoms are in this molecule?

A: The molecule given in the question is a hydrocarbon compound which has heteroatoms (O and N).…

Q: A modern penny weighs 2.5g but is only 2.52% copper by mass. Calculate the number of Cooper atoms in…

A:

Q: Sketch a simple schematic diagram of a mass spectrometer. Briefly explain how mass spectrometers…

A:

Q: atoms

A:

Q: How many atoms of He can a balloon that has a 19 cm diameter hold? The density of Helium is 1.18…

A: Given data,Diameter of balloon=19cmRadius of balloon=19cm2=9.5cmDensity of He=1.18g/L

Q: Topic: separation scheme of group i and iii cations Write the chemical formula or preciptates…

A: Here we have to write chemical formula or precipitate formed of group 1 and 3 cations-

Q: Calculate the number of molecules in 8.320 moles of Mg3(PO4) Must Show work with units and correct…

A: Applying mole concept and avogadro concept.

Q: • Part A How many moles of atoms are in 7.00 g of C? Express your answer numerically in moles. >…

A:

Q: 3 molecule(s) of dinitrogen pentoxide contains: How many oxygen atoms? How many total atoms?

A: The molecular formula of dinitrogen pentoxide is N2O5

Q: 6. If a vitamin contains 63 atoms of carbon, 90 atoms of hydrogen, 14 atoms oxygen, 14 atoms of…

A: The molecular formula of any compound is a way to express the number and the type of atoms that are…

Q: What is meant by the first compound notation?

A: To explain the first compound notation.

Q: Which molecular compound contains 7 atoms per molecule ?

A: In this question, a compound having 7 atoms per molecule has to be determined. In a chemical…

Q: Complete the table below for calculating the molar mass of the compound sulfur hexafluoride .…

A: Different type of atoms have different atomic masses and sum of atomic masses present in any…

Q: 2.6 mol lithium bromide to total number of ions

A: We know that 1 mol of any substance contains Avogadro's number of substances. We can determine…

Q: 10g of this compound has 6.1g of tin and 3.9g of fluorine, find the formula and name for this…

A:

Q: 17) What is the mass of CO that contains one trillion carbon atoms?

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: 1. How many ATOMS of sulfur, dichloride, SCI2? are present in 4.82 moles of sulfur atoms of sulfur

A: Given: Moles of SCl2=4.82 moles

Q: Order them in decreasing order of the amount of oxygen. = Chlorate = Hypochlorite = Chlorite E…

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Q: How many atoms of He can a balloon that has a 15 cm diameter hold? The density of Helium is 1.18…

A:

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

A: Given: BaCl2

Q: According to nutritional guidelines the estimated average requirement for dietary potassium is…

A:

Q: (a) 11. Average atomic mass in amu of one iron atam. 55.847 amu (ь) Using the amu, calculate the…

A:

Q: Calculate the mass of vanadium(V) oxide (V,05) that contains a million (1.0 x 10°) vanadium atoms.…

A: Given : Number of Vanadium atoms = 106 .

Q: How do you calculate the atoms of an element in a compound when given the grams of the compound

A: We know that , 1 mole = 6.023 x 10^23 atoms/molecules/ions    No of moles = Given mass/(molar mass…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.